./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/easy2-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/easy2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a611c66c14ab07fcb466e336a12a38ea58a5e4dd276e08fd17165595fe5eadfb --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:31:51,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:31:51,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:31:51,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:31:51,823 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:31:51,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:31:51,827 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:31:51,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:31:51,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:31:51,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:31:51,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:31:51,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:31:51,849 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:31:51,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:31:51,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:31:51,857 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:31:51,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:31:51,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:31:51,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:31:51,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:31:51,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:31:51,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:31:51,878 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:31:51,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:31:51,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:31:51,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:31:51,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:31:51,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:31:51,898 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:31:51,899 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:31:51,901 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:31:51,902 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:31:51,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:31:51,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:31:51,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:31:51,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:31:51,909 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:31:51,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:31:51,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:31:51,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:31:51,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:31:51,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-07 07:31:51,960 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:31:51,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:31:51,961 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:31:51,961 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:31:51,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:31:51,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:31:51,969 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:31:51,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:31:51,970 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:31:51,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:31:51,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:31:51,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:31:51,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:31:51,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:31:51,972 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 07:31:51,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:31:51,973 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:31:51,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:31:51,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:31:51,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:31:51,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:31:51,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:31:51,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:31:51,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:31:51,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:31:51,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:31:51,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:31:51,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:31:51,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:31:51,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a611c66c14ab07fcb466e336a12a38ea58a5e4dd276e08fd17165595fe5eadfb [2021-11-07 07:31:52,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:31:52,261 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:31:52,264 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:31:52,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:31:52,270 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:31:52,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/termination-crafted/easy2-1.c [2021-11-07 07:31:52,358 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/data/69b1c7cec/81ad4640e0184c7a8182ba6bbec7e195/FLAGb6eaf5424 [2021-11-07 07:31:52,801 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:31:52,802 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/sv-benchmarks/c/termination-crafted/easy2-1.c [2021-11-07 07:31:52,808 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/data/69b1c7cec/81ad4640e0184c7a8182ba6bbec7e195/FLAGb6eaf5424 [2021-11-07 07:31:53,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/data/69b1c7cec/81ad4640e0184c7a8182ba6bbec7e195 [2021-11-07 07:31:53,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:31:53,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:31:53,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:31:53,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:31:53,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:31:53,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55741939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53, skipping insertion in model container [2021-11-07 07:31:53,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:31:53,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:31:53,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:31:53,383 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:31:53,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:31:53,424 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:31:53,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53 WrapperNode [2021-11-07 07:31:53,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:31:53,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:31:53,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:31:53,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:31:53,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,459 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:31:53,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:31:53,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:31:53,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:31:53,467 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,475 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:31:53,476 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:31:53,476 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:31:53,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:31:53,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53" (1/1) ... [2021-11-07 07:31:53,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:31:53,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:53,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:31:53,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:31:53,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:31:53,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:31:53,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:31:53,747 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-07 07:31:53,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:31:53 BoogieIcfgContainer [2021-11-07 07:31:53,750 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:31:53,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:31:53,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:31:53,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:31:53,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:31:53" (1/3) ... [2021-11-07 07:31:53,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b75c9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:31:53, skipping insertion in model container [2021-11-07 07:31:53,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:31:53" (2/3) ... [2021-11-07 07:31:53,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b75c9fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:31:53, skipping insertion in model container [2021-11-07 07:31:53,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:31:53" (3/3) ... [2021-11-07 07:31:53,761 INFO L111 eAbstractionObserver]: Analyzing ICFG easy2-1.c [2021-11-07 07:31:53,767 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:31:53,768 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 07:31:53,835 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:31:53,846 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 07:31:53,846 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 07:31:53,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:53,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 07:31:53,875 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:53,875 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 07:31:53,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:53,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:53,884 INFO L85 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-11-07 07:31:53,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:53,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018840956] [2021-11-07 07:31:53,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:53,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:54,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:54,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018840956] [2021-11-07 07:31:54,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018840956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:54,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:54,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 07:31:54,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803610240] [2021-11-07 07:31:54,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:31:54,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:54,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:31:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,064 INFO L87 Difference]: Start difference. First operand has 18 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:54,092 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-11-07 07:31:54,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:31:54,094 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-11-07 07:31:54,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:54,103 INFO L225 Difference]: With dead ends: 30 [2021-11-07 07:31:54,103 INFO L226 Difference]: Without dead ends: 17 [2021-11-07 07:31:54,105 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-07 07:31:54,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-07 07:31:54,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.6) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-07 07:31:54,136 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 3 [2021-11-07 07:31:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:54,136 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-07 07:31:54,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,137 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-07 07:31:54,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 07:31:54,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:54,137 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 07:31:54,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:31:54,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:54,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:54,139 INFO L85 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-11-07 07:31:54,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:54,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5349535] [2021-11-07 07:31:54,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:54,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:54,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:54,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:54,161 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5349535] [2021-11-07 07:31:54,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5349535] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:54,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:54,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 07:31:54,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955827305] [2021-11-07 07:31:54,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:31:54,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:54,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:31:54,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,183 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:54,204 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-07 07:31:54,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:31:54,205 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-07 07:31:54,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:54,206 INFO L225 Difference]: With dead ends: 16 [2021-11-07 07:31:54,206 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 07:31:54,206 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 07:31:54,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 07:31:54,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-07 07:31:54,210 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 4 [2021-11-07 07:31:54,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:54,211 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-07 07:31:54,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,211 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-07 07:31:54,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 07:31:54,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:54,212 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 07:31:54,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:31:54,212 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:54,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:54,213 INFO L85 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2021-11-07 07:31:54,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:54,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143091623] [2021-11-07 07:31:54,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:54,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:54,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:54,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:54,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143091623] [2021-11-07 07:31:54,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143091623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:54,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:54,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 07:31:54,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906815136] [2021-11-07 07:31:54,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:31:54,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:54,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:31:54,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,285 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:54,301 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-07 07:31:54,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:31:54,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-07 07:31:54,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:54,303 INFO L225 Difference]: With dead ends: 15 [2021-11-07 07:31:54,303 INFO L226 Difference]: Without dead ends: 14 [2021-11-07 07:31:54,303 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-07 07:31:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-07 07:31:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-07 07:31:54,307 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-11-07 07:31:54,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:54,307 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-07 07:31:54,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,308 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-07 07:31:54,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 07:31:54,308 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:54,308 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 07:31:54,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:31:54,309 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:54,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:54,310 INFO L85 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-11-07 07:31:54,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:54,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863766784] [2021-11-07 07:31:54,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:54,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:54,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:54,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:54,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863766784] [2021-11-07 07:31:54,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863766784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:54,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:54,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 07:31:54,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355493453] [2021-11-07 07:31:54,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:31:54,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:54,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:31:54,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,374 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:54,396 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-07 07:31:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:31:54,397 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 07:31:54,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:54,398 INFO L225 Difference]: With dead ends: 18 [2021-11-07 07:31:54,398 INFO L226 Difference]: Without dead ends: 17 [2021-11-07 07:31:54,399 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-07 07:31:54,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-07 07:31:54,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 16 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-07 07:31:54,403 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 6 [2021-11-07 07:31:54,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:54,403 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-07 07:31:54,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,404 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-07 07:31:54,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:31:54,404 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:54,404 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:54,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 07:31:54,405 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:54,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:54,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1366846491, now seen corresponding path program 1 times [2021-11-07 07:31:54,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:54,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459657882] [2021-11-07 07:31:54,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:54,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:54,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:54,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:54,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459657882] [2021-11-07 07:31:54,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459657882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:54,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:54,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-07 07:31:54,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313655206] [2021-11-07 07:31:54,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:31:54,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:54,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:31:54,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,479 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:54,488 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-11-07 07:31:54,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:31:54,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 07:31:54,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:54,489 INFO L225 Difference]: With dead ends: 17 [2021-11-07 07:31:54,489 INFO L226 Difference]: Without dead ends: 16 [2021-11-07 07:31:54,490 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-07 07:31:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-11-07 07:31:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-07 07:31:54,494 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-11-07 07:31:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:54,494 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-07 07:31:54,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-07 07:31:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 07:31:54,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:54,495 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:54,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 07:31:54,496 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:54,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:54,496 INFO L85 PathProgramCache]: Analyzing trace with hash 577431791, now seen corresponding path program 1 times [2021-11-07 07:31:54,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:54,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530588322] [2021-11-07 07:31:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:54,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:54,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:54,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:54,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:54,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530588322] [2021-11-07 07:31:54,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530588322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:31:54,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:31:54,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:31:54,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287815785] [2021-11-07 07:31:54,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:31:54,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:54,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:31:54,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,529 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:54,536 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-07 07:31:54,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:31:54,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-07 07:31:54,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:54,537 INFO L225 Difference]: With dead ends: 16 [2021-11-07 07:31:54,538 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 07:31:54,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:31:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 07:31:54,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 07:31:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-07 07:31:54,542 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-07 07:31:54,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:54,542 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-07 07:31:54,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,543 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-07 07:31:54,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 07:31:54,543 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:54,543 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:31:54,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 07:31:54,544 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:54,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:54,544 INFO L85 PathProgramCache]: Analyzing trace with hash 861171249, now seen corresponding path program 1 times [2021-11-07 07:31:54,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:54,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917616839] [2021-11-07 07:31:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:54,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:54,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:54,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:54,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917616839] [2021-11-07 07:31:54,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917616839] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:54,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363852438] [2021-11-07 07:31:54,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:54,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:54,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:54,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:54,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:31:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:54,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:31:54,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:54,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363852438] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:54,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:54,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-11-07 07:31:54,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340233891] [2021-11-07 07:31:54,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:31:54,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:54,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:31:54,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:31:54,691 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:54,707 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-07 07:31:54,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:31:54,708 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 07:31:54,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:54,709 INFO L225 Difference]: With dead ends: 21 [2021-11-07 07:31:54,709 INFO L226 Difference]: Without dead ends: 20 [2021-11-07 07:31:54,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:31:54,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-07 07:31:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-11-07 07:31:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-07 07:31:54,714 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2021-11-07 07:31:54,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:54,714 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-07 07:31:54,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-07 07:31:54,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 07:31:54,716 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:54,716 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-07 07:31:54,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:54,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:54,930 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:54,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:54,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1313063709, now seen corresponding path program 1 times [2021-11-07 07:31:54,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:54,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134283472] [2021-11-07 07:31:54,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:54,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:54,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:54,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134283472] [2021-11-07 07:31:54,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134283472] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:54,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463894467] [2021-11-07 07:31:54,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:54,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:54,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:54,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:54,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:31:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:55,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:31:55,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:55,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463894467] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:55,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:55,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-11-07 07:31:55,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652775753] [2021-11-07 07:31:55,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:31:55,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:55,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:31:55,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:31:55,108 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:55,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:55,132 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-11-07 07:31:55,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:31:55,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-07 07:31:55,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:55,134 INFO L225 Difference]: With dead ends: 23 [2021-11-07 07:31:55,134 INFO L226 Difference]: Without dead ends: 22 [2021-11-07 07:31:55,135 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:31:55,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-11-07 07:31:55,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-11-07 07:31:55,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:55,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-11-07 07:31:55,145 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2021-11-07 07:31:55,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:55,145 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-11-07 07:31:55,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:55,146 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-11-07 07:31:55,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 07:31:55,148 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:55,148 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1] [2021-11-07 07:31:55,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 07:31:55,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:55,370 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:55,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:55,371 INFO L85 PathProgramCache]: Analyzing trace with hash 844787553, now seen corresponding path program 2 times [2021-11-07 07:31:55,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:55,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589699297] [2021-11-07 07:31:55,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:55,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:55,419 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:55,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:55,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589699297] [2021-11-07 07:31:55,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589699297] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:55,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380649427] [2021-11-07 07:31:55,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:31:55,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:55,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:55,421 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:55,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:31:55,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:31:55,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:55,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:31:55,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:55,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380649427] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:55,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:55,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-11-07 07:31:55,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865603959] [2021-11-07 07:31:55,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:31:55,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:55,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:31:55,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:55,571 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:55,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:55,592 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-11-07 07:31:55,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:31:55,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-07 07:31:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:55,595 INFO L225 Difference]: With dead ends: 28 [2021-11-07 07:31:55,596 INFO L226 Difference]: Without dead ends: 27 [2021-11-07 07:31:55,596 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-07 07:31:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-11-07 07:31:55,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-11-07 07:31:55,606 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 17 [2021-11-07 07:31:55,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:55,607 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-11-07 07:31:55,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:55,608 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-11-07 07:31:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 07:31:55,610 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:55,610 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1] [2021-11-07 07:31:55,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:55,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:55,834 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:55,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:55,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1442319379, now seen corresponding path program 2 times [2021-11-07 07:31:55,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:55,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523516053] [2021-11-07 07:31:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:55,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:55,881 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:55,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:55,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523516053] [2021-11-07 07:31:55,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523516053] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:55,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468191437] [2021-11-07 07:31:55,882 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:31:55,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:55,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:55,884 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:55,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:31:55,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:31:55,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:55,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:31:55,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:56,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468191437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:56,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:56,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-11-07 07:31:56,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133146236] [2021-11-07 07:31:56,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:31:56,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:56,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:31:56,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:56,058 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:56,093 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2021-11-07 07:31:56,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:31:56,099 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-07 07:31:56,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:56,099 INFO L225 Difference]: With dead ends: 30 [2021-11-07 07:31:56,099 INFO L226 Difference]: Without dead ends: 29 [2021-11-07 07:31:56,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:31:56,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-07 07:31:56,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-07 07:31:56,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:56,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-11-07 07:31:56,112 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 20 [2021-11-07 07:31:56,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:56,112 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-11-07 07:31:56,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:56,113 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-11-07 07:31:56,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 07:31:56,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:56,114 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1] [2021-11-07 07:31:56,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:56,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 07:31:56,316 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:56,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:56,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1141262287, now seen corresponding path program 3 times [2021-11-07 07:31:56,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:56,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132790135] [2021-11-07 07:31:56,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:56,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:56,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:56,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132790135] [2021-11-07 07:31:56,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132790135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:56,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4566987] [2021-11-07 07:31:56,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:31:56,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:56,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:56,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:56,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:31:56,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 07:31:56,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:56,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:31:56,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:56,605 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:56,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4566987] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:56,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:56,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-11-07 07:31:56,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662953861] [2021-11-07 07:31:56,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:31:56,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:56,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:31:56,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:31:56,616 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:56,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:56,644 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2021-11-07 07:31:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:31:56,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-07 07:31:56,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:56,646 INFO L225 Difference]: With dead ends: 35 [2021-11-07 07:31:56,646 INFO L226 Difference]: Without dead ends: 34 [2021-11-07 07:31:56,646 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:31:56,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-07 07:31:56,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-11-07 07:31:56,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 31 states have (on average 1.064516129032258) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-11-07 07:31:56,656 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 24 [2021-11-07 07:31:56,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:56,656 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-11-07 07:31:56,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:56,657 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-11-07 07:31:56,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 07:31:56,658 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:56,658 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1] [2021-11-07 07:31:56,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:56,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:56,859 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash -383633123, now seen corresponding path program 3 times [2021-11-07 07:31:56,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:56,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558854210] [2021-11-07 07:31:56,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:56,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:56,931 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:56,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:56,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558854210] [2021-11-07 07:31:56,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558854210] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:56,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426503123] [2021-11-07 07:31:56,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:31:56,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:56,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:56,933 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:56,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:31:57,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 07:31:57,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:57,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:31:57,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:57,126 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:57,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426503123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:57,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:57,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-11-07 07:31:57,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212550957] [2021-11-07 07:31:57,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:31:57,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:57,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:31:57,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:31:57,128 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:57,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:57,151 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-11-07 07:31:57,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:31:57,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 07:31:57,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:57,154 INFO L225 Difference]: With dead ends: 37 [2021-11-07 07:31:57,154 INFO L226 Difference]: Without dead ends: 36 [2021-11-07 07:31:57,154 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:31:57,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-07 07:31:57,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-11-07 07:31:57,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 34 states have (on average 1.0588235294117647) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:57,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-11-07 07:31:57,160 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 27 [2021-11-07 07:31:57,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:57,160 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-11-07 07:31:57,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-11-07 07:31:57,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-07 07:31:57,162 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:57,162 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 1, 1] [2021-11-07 07:31:57,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:57,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-07 07:31:57,388 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:57,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:57,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1391598239, now seen corresponding path program 4 times [2021-11-07 07:31:57,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:57,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294601326] [2021-11-07 07:31:57,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:57,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:57,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:57,453 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:57,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:57,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294601326] [2021-11-07 07:31:57,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294601326] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:57,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061309726] [2021-11-07 07:31:57,454 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:31:57,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:57,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:57,455 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:57,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:31:57,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:31:57,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:57,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:31:57,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:57,623 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:57,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061309726] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:57,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:57,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-11-07 07:31:57,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181133860] [2021-11-07 07:31:57,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:31:57,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:57,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:31:57,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:31:57,625 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:57,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:57,650 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-11-07 07:31:57,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:31:57,651 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-07 07:31:57,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:57,652 INFO L225 Difference]: With dead ends: 42 [2021-11-07 07:31:57,652 INFO L226 Difference]: Without dead ends: 41 [2021-11-07 07:31:57,652 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:31:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-07 07:31:57,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-11-07 07:31:57,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:57,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-11-07 07:31:57,658 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 31 [2021-11-07 07:31:57,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:57,658 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-11-07 07:31:57,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-11-07 07:31:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-07 07:31:57,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:57,659 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1] [2021-11-07 07:31:57,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:57,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:57,879 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:57,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:57,879 INFO L85 PathProgramCache]: Analyzing trace with hash -2078753299, now seen corresponding path program 4 times [2021-11-07 07:31:57,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:57,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736248826] [2021-11-07 07:31:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:57,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:57,936 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:57,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:57,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736248826] [2021-11-07 07:31:57,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736248826] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:57,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377994997] [2021-11-07 07:31:57,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:31:57,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:57,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:57,939 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:57,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 07:31:58,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:31:58,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:58,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:31:58,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:58,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377994997] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:58,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:58,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-11-07 07:31:58,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633345179] [2021-11-07 07:31:58,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:31:58,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:58,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:31:58,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:31:58,140 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:58,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:58,170 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-11-07 07:31:58,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:31:58,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-07 07:31:58,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:58,172 INFO L225 Difference]: With dead ends: 44 [2021-11-07 07:31:58,172 INFO L226 Difference]: Without dead ends: 43 [2021-11-07 07:31:58,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:31:58,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-07 07:31:58,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-07 07:31:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.048780487804878) internal successors, (43), 42 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:58,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-11-07 07:31:58,178 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 34 [2021-11-07 07:31:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:58,178 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-11-07 07:31:58,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:58,178 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-11-07 07:31:58,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 07:31:58,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:58,180 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1] [2021-11-07 07:31:58,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:58,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 07:31:58,406 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:58,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:58,407 INFO L85 PathProgramCache]: Analyzing trace with hash 747995697, now seen corresponding path program 5 times [2021-11-07 07:31:58,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:58,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623496104] [2021-11-07 07:31:58,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:58,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:58,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:58,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623496104] [2021-11-07 07:31:58,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623496104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:58,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694985654] [2021-11-07 07:31:58,514 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:31:58,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:58,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:58,522 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:58,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 07:31:58,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-07 07:31:58,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:58,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:31:58,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:58,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694985654] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:58,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:58,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-11-07 07:31:58,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661208632] [2021-11-07 07:31:58,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:31:58,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:58,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:31:58,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:31:58,739 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:58,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:58,765 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-11-07 07:31:58,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:31:58,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-07 07:31:58,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:58,767 INFO L225 Difference]: With dead ends: 49 [2021-11-07 07:31:58,768 INFO L226 Difference]: Without dead ends: 48 [2021-11-07 07:31:58,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:31:58,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-07 07:31:58,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-11-07 07:31:58,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-11-07 07:31:58,784 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 38 [2021-11-07 07:31:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:58,785 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-11-07 07:31:58,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:58,785 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-11-07 07:31:58,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 07:31:58,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:58,786 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 1, 1] [2021-11-07 07:31:58,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:59,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 07:31:59,002 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:59,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1249521437, now seen corresponding path program 5 times [2021-11-07 07:31:59,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:59,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643880219] [2021-11-07 07:31:59,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:59,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:59,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:59,070 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:59,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:59,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643880219] [2021-11-07 07:31:59,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643880219] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:59,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138122698] [2021-11-07 07:31:59,071 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:31:59,071 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:59,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:59,072 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:59,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 07:31:59,202 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-07 07:31:59,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:59,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:31:59,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:59,329 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:59,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138122698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:59,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:59,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-11-07 07:31:59,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003219391] [2021-11-07 07:31:59,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:31:59,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:59,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:31:59,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:31:59,331 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:59,352 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-11-07 07:31:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:31:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-07 07:31:59,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:59,353 INFO L225 Difference]: With dead ends: 51 [2021-11-07 07:31:59,353 INFO L226 Difference]: Without dead ends: 50 [2021-11-07 07:31:59,353 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:31:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-07 07:31:59,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-11-07 07:31:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:59,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-11-07 07:31:59,358 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 41 [2021-11-07 07:31:59,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:59,358 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-11-07 07:31:59,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:59,358 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-11-07 07:31:59,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 07:31:59,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:59,360 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 1, 1] [2021-11-07 07:31:59,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:59,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 07:31:59,586 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:31:59,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:59,587 INFO L85 PathProgramCache]: Analyzing trace with hash 360373089, now seen corresponding path program 6 times [2021-11-07 07:31:59,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:59,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174076636] [2021-11-07 07:31:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:59,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:59,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:59,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174076636] [2021-11-07 07:31:59,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174076636] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:59,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176289217] [2021-11-07 07:31:59,670 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:31:59,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:59,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:59,672 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:59,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 07:31:59,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-07 07:31:59,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:59,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:31:59,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:59,947 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:59,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176289217] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:59,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:59,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-07 07:31:59,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842175527] [2021-11-07 07:31:59,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:31:59,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:59,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:31:59,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:31:59,950 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:59,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:59,984 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-11-07 07:31:59,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:31:59,984 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-07 07:31:59,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:59,985 INFO L225 Difference]: With dead ends: 56 [2021-11-07 07:31:59,985 INFO L226 Difference]: Without dead ends: 55 [2021-11-07 07:31:59,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:31:59,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-07 07:31:59,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-11-07 07:31:59,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 52 states have (on average 1.0384615384615385) internal successors, (54), 53 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:59,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-11-07 07:31:59,990 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 45 [2021-11-07 07:31:59,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:59,991 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-11-07 07:31:59,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 8 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:59,991 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-11-07 07:31:59,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-07 07:31:59,992 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:59,992 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 1, 1] [2021-11-07 07:32:00,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:00,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 07:32:00,208 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:00,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:00,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1543501843, now seen corresponding path program 6 times [2021-11-07 07:32:00,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:00,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858459368] [2021-11-07 07:32:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:00,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:00,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:00,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:00,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858459368] [2021-11-07 07:32:00,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858459368] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:00,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962953819] [2021-11-07 07:32:00,278 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:32:00,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:00,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:00,290 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:00,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 07:32:00,413 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-07 07:32:00,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:00,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:32:00,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:00,562 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:00,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962953819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:00,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:00,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-07 07:32:00,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303915763] [2021-11-07 07:32:00,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:32:00,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:00,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:32:00,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:32:00,564 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:00,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:00,587 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-11-07 07:32:00,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:32:00,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-11-07 07:32:00,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:00,589 INFO L225 Difference]: With dead ends: 58 [2021-11-07 07:32:00,589 INFO L226 Difference]: Without dead ends: 57 [2021-11-07 07:32:00,589 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:32:00,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-07 07:32:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-07 07:32:00,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:00,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2021-11-07 07:32:00,594 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 48 [2021-11-07 07:32:00,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:00,594 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2021-11-07 07:32:00,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:00,594 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2021-11-07 07:32:00,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 07:32:00,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:00,595 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 1, 1] [2021-11-07 07:32:00,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:00,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 07:32:00,810 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:00,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:00,810 INFO L85 PathProgramCache]: Analyzing trace with hash 331861041, now seen corresponding path program 7 times [2021-11-07 07:32:00,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:00,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598312115] [2021-11-07 07:32:00,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:00,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:00,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:00,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598312115] [2021-11-07 07:32:00,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598312115] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:00,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722444514] [2021-11-07 07:32:00,883 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:32:00,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:00,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:00,899 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:00,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 07:32:01,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:01,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:32:01,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:01,199 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:01,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722444514] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:01,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:01,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-11-07 07:32:01,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743345447] [2021-11-07 07:32:01,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:32:01,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:01,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:32:01,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:32:01,201 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:01,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:01,229 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2021-11-07 07:32:01,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:32:01,229 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-07 07:32:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:01,230 INFO L225 Difference]: With dead ends: 63 [2021-11-07 07:32:01,230 INFO L226 Difference]: Without dead ends: 62 [2021-11-07 07:32:01,231 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:32:01,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-07 07:32:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2021-11-07 07:32:01,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 60 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:01,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2021-11-07 07:32:01,234 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 52 [2021-11-07 07:32:01,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:01,235 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2021-11-07 07:32:01,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:01,235 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2021-11-07 07:32:01,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 07:32:01,236 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:01,236 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 1, 1] [2021-11-07 07:32:01,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:01,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:01,459 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:01,459 INFO L85 PathProgramCache]: Analyzing trace with hash -542399203, now seen corresponding path program 7 times [2021-11-07 07:32:01,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:01,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352524526] [2021-11-07 07:32:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:01,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:01,536 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:01,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:01,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352524526] [2021-11-07 07:32:01,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352524526] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:01,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626977093] [2021-11-07 07:32:01,537 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:32:01,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:01,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:01,541 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:01,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 07:32:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:01,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:32:01,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:01,879 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:01,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626977093] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:01,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:01,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-11-07 07:32:01,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478513377] [2021-11-07 07:32:01,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:32:01,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:01,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:32:01,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:32:01,882 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:01,912 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2021-11-07 07:32:01,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:32:01,912 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-11-07 07:32:01,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:01,913 INFO L225 Difference]: With dead ends: 65 [2021-11-07 07:32:01,913 INFO L226 Difference]: Without dead ends: 64 [2021-11-07 07:32:01,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:32:01,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-07 07:32:01,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-07 07:32:01,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 62 states have (on average 1.032258064516129) internal successors, (64), 63 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:01,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-11-07 07:32:01,927 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 55 [2021-11-07 07:32:01,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:01,928 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-11-07 07:32:01,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:01,928 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-11-07 07:32:01,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-07 07:32:01,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:01,932 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 1, 1] [2021-11-07 07:32:01,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:02,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:02,133 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:02,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:02,133 INFO L85 PathProgramCache]: Analyzing trace with hash 687952225, now seen corresponding path program 8 times [2021-11-07 07:32:02,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:02,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759289734] [2021-11-07 07:32:02,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:02,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:02,224 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:02,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:02,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759289734] [2021-11-07 07:32:02,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759289734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:02,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096297206] [2021-11-07 07:32:02,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:32:02,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:02,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:02,226 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:02,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 07:32:02,403 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:32:02,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:02,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:32:02,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:02,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096297206] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:02,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:02,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-11-07 07:32:02,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238848591] [2021-11-07 07:32:02,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:32:02,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:02,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:32:02,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:32:02,606 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 11 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:02,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:02,637 INFO L93 Difference]: Finished difference Result 70 states and 70 transitions. [2021-11-07 07:32:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:32:02,638 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-07 07:32:02,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:02,639 INFO L225 Difference]: With dead ends: 70 [2021-11-07 07:32:02,639 INFO L226 Difference]: Without dead ends: 69 [2021-11-07 07:32:02,639 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:32:02,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-07 07:32:02,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2021-11-07 07:32:02,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 66 states have (on average 1.0303030303030303) internal successors, (68), 67 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2021-11-07 07:32:02,646 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 59 [2021-11-07 07:32:02,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:02,646 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2021-11-07 07:32:02,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:02,647 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2021-11-07 07:32:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 07:32:02,647 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:02,647 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 8, 8, 1, 1] [2021-11-07 07:32:02,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:02,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-07 07:32:02,874 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:02,875 INFO L85 PathProgramCache]: Analyzing trace with hash -799157779, now seen corresponding path program 8 times [2021-11-07 07:32:02,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:02,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275174528] [2021-11-07 07:32:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:02,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:02,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:02,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275174528] [2021-11-07 07:32:02,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275174528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:02,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183554377] [2021-11-07 07:32:02,987 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:32:02,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:02,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:02,988 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:03,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 07:32:03,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:32:03,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:03,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:32:03,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:03,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183554377] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:03,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:03,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-11-07 07:32:03,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019713803] [2021-11-07 07:32:03,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:32:03,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:03,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:32:03,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:32:03,383 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand has 11 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:03,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:03,413 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-11-07 07:32:03,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:32:03,413 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-11-07 07:32:03,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:03,414 INFO L225 Difference]: With dead ends: 72 [2021-11-07 07:32:03,414 INFO L226 Difference]: Without dead ends: 71 [2021-11-07 07:32:03,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:32:03,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-11-07 07:32:03,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-11-07 07:32:03,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 69 states have (on average 1.0289855072463767) internal successors, (71), 70 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2021-11-07 07:32:03,421 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 62 [2021-11-07 07:32:03,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:03,421 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2021-11-07 07:32:03,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:03,421 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2021-11-07 07:32:03,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 07:32:03,422 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:03,422 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 1, 1] [2021-11-07 07:32:03,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:03,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:03,638 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:03,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:03,639 INFO L85 PathProgramCache]: Analyzing trace with hash -399469007, now seen corresponding path program 9 times [2021-11-07 07:32:03,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:03,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238143132] [2021-11-07 07:32:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:03,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:03,739 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:03,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:03,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238143132] [2021-11-07 07:32:03,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238143132] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:03,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057743838] [2021-11-07 07:32:03,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:32:03,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:03,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:03,742 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:03,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 07:32:03,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-07 07:32:03,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:03,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:32:03,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:04,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057743838] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:04,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:04,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-11-07 07:32:04,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559332629] [2021-11-07 07:32:04,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:32:04,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:04,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:32:04,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:32:04,144 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:04,174 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2021-11-07 07:32:04,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:32:04,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 07:32:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:04,175 INFO L225 Difference]: With dead ends: 77 [2021-11-07 07:32:04,175 INFO L226 Difference]: Without dead ends: 76 [2021-11-07 07:32:04,176 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:32:04,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-07 07:32:04,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2021-11-07 07:32:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2021-11-07 07:32:04,179 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 66 [2021-11-07 07:32:04,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:04,180 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2021-11-07 07:32:04,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2021-11-07 07:32:04,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 07:32:04,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:04,181 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 9, 9, 1, 1] [2021-11-07 07:32:04,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:04,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:04,398 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:04,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:04,399 INFO L85 PathProgramCache]: Analyzing trace with hash 773233437, now seen corresponding path program 9 times [2021-11-07 07:32:04,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:04,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302924800] [2021-11-07 07:32:04,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:04,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:04,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:04,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302924800] [2021-11-07 07:32:04,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302924800] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:04,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422275294] [2021-11-07 07:32:04,509 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:32:04,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:04,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:04,510 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:04,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 07:32:04,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-07 07:32:04,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:04,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:32:04,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:04,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [422275294] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:04,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:04,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-11-07 07:32:04,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132952293] [2021-11-07 07:32:04,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:32:04,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:32:04,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:32:04,962 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:04,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:04,990 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-11-07 07:32:04,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:32:04,990 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 07:32:04,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:04,991 INFO L225 Difference]: With dead ends: 79 [2021-11-07 07:32:04,991 INFO L226 Difference]: Without dead ends: 78 [2021-11-07 07:32:04,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:32:04,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-07 07:32:04,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-11-07 07:32:04,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.0263157894736843) internal successors, (78), 77 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2021-11-07 07:32:04,996 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 69 [2021-11-07 07:32:04,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:04,996 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2021-11-07 07:32:04,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:04,997 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2021-11-07 07:32:05,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-07 07:32:05,001 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:05,002 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 1, 1] [2021-11-07 07:32:05,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:05,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-07 07:32:05,218 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:05,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:05,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1123989663, now seen corresponding path program 10 times [2021-11-07 07:32:05,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:05,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674022466] [2021-11-07 07:32:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:05,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:05,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:05,322 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674022466] [2021-11-07 07:32:05,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674022466] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:05,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360271124] [2021-11-07 07:32:05,323 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:32:05,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:05,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:05,324 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:05,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 07:32:05,630 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:32:05,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:05,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 07:32:05,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:05,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360271124] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:05,829 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:05,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-11-07 07:32:05,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432225220] [2021-11-07 07:32:05,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:32:05,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:05,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:32:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:32:05,832 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:05,879 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-11-07 07:32:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:32:05,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-11-07 07:32:05,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:05,881 INFO L225 Difference]: With dead ends: 84 [2021-11-07 07:32:05,881 INFO L226 Difference]: Without dead ends: 83 [2021-11-07 07:32:05,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:32:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-07 07:32:05,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-11-07 07:32:05,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 1.025) internal successors, (82), 81 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:05,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-11-07 07:32:05,886 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 73 [2021-11-07 07:32:05,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:05,886 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-11-07 07:32:05,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:05,887 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-11-07 07:32:05,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 07:32:05,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:05,888 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 1, 1] [2021-11-07 07:32:05,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:06,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-07 07:32:06,114 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:06,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:06,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1210967059, now seen corresponding path program 10 times [2021-11-07 07:32:06,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:06,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098011764] [2021-11-07 07:32:06,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:06,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:06,226 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:06,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:06,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098011764] [2021-11-07 07:32:06,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098011764] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:06,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903210756] [2021-11-07 07:32:06,227 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:32:06,228 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:06,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:06,229 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:06,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 07:32:06,509 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:32:06,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:06,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 07:32:06,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:06,701 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 0 proven. 365 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:06,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903210756] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:06,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:06,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-11-07 07:32:06,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941266569] [2021-11-07 07:32:06,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:32:06,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:06,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:32:06,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:32:06,704 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:06,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:06,735 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-11-07 07:32:06,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:32:06,743 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 07:32:06,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:06,744 INFO L225 Difference]: With dead ends: 86 [2021-11-07 07:32:06,745 INFO L226 Difference]: Without dead ends: 85 [2021-11-07 07:32:06,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:32:06,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-07 07:32:06,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-11-07 07:32:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:06,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2021-11-07 07:32:06,751 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 76 [2021-11-07 07:32:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:06,751 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2021-11-07 07:32:06,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:06,752 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2021-11-07 07:32:06,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 07:32:06,760 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:06,760 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 1, 1] [2021-11-07 07:32:06,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:06,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:06,974 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:06,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:06,974 INFO L85 PathProgramCache]: Analyzing trace with hash 141549617, now seen corresponding path program 11 times [2021-11-07 07:32:06,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:06,975 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083684106] [2021-11-07 07:32:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:06,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:07,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:07,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083684106] [2021-11-07 07:32:07,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083684106] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:07,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604140256] [2021-11-07 07:32:07,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:32:07,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:07,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:07,090 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:07,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 07:32:07,389 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-07 07:32:07,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:07,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:32:07,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:07,584 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:07,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604140256] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:07,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:07,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-11-07 07:32:07,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536425513] [2021-11-07 07:32:07,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:32:07,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:07,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:32:07,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:32:07,587 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:07,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:07,618 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2021-11-07 07:32:07,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 07:32:07,618 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-07 07:32:07,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:07,619 INFO L225 Difference]: With dead ends: 91 [2021-11-07 07:32:07,619 INFO L226 Difference]: Without dead ends: 90 [2021-11-07 07:32:07,620 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:32:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-07 07:32:07,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2021-11-07 07:32:07,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 88 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2021-11-07 07:32:07,623 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 80 [2021-11-07 07:32:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:07,624 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2021-11-07 07:32:07,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:07,624 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2021-11-07 07:32:07,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 07:32:07,625 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:07,625 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 11, 11, 1, 1] [2021-11-07 07:32:07,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:07,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:07,838 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:07,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:07,838 INFO L85 PathProgramCache]: Analyzing trace with hash -753200867, now seen corresponding path program 11 times [2021-11-07 07:32:07,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:07,839 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167954491] [2021-11-07 07:32:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:07,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:07,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:07,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167954491] [2021-11-07 07:32:07,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167954491] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:07,982 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371191518] [2021-11-07 07:32:07,982 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:32:07,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:07,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:07,986 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:08,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 07:32:08,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-07 07:32:08,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:08,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:32:08,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:08,652 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 0 proven. 440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:08,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371191518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:08,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:08,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-11-07 07:32:08,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595889789] [2021-11-07 07:32:08,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:32:08,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:08,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:32:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:32:08,654 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 14 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:08,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:08,692 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2021-11-07 07:32:08,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 07:32:08,693 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-07 07:32:08,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:08,694 INFO L225 Difference]: With dead ends: 93 [2021-11-07 07:32:08,694 INFO L226 Difference]: Without dead ends: 92 [2021-11-07 07:32:08,694 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:32:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-11-07 07:32:08,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-11-07 07:32:08,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 91 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-11-07 07:32:08,698 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 83 [2021-11-07 07:32:08,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:08,699 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-11-07 07:32:08,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.384615384615385) internal successors, (83), 13 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:08,699 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-11-07 07:32:08,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 07:32:08,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:08,700 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 1, 1] [2021-11-07 07:32:08,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:08,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 07:32:08,926 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:08,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1092960927, now seen corresponding path program 12 times [2021-11-07 07:32:08,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:08,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575015167] [2021-11-07 07:32:08,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:08,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:09,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:09,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575015167] [2021-11-07 07:32:09,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575015167] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:09,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529686840] [2021-11-07 07:32:09,067 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:32:09,067 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:09,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:09,071 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:09,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 07:32:09,431 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-07 07:32:09,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:09,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 07:32:09,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:09,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529686840] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:09,673 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:09,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-11-07 07:32:09,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449375069] [2021-11-07 07:32:09,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 07:32:09,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 07:32:09,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:32:09,675 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:09,716 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2021-11-07 07:32:09,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 07:32:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 07:32:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:09,718 INFO L225 Difference]: With dead ends: 98 [2021-11-07 07:32:09,718 INFO L226 Difference]: Without dead ends: 97 [2021-11-07 07:32:09,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:32:09,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-07 07:32:09,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2021-11-07 07:32:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 94 states have (on average 1.0212765957446808) internal successors, (96), 95 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2021-11-07 07:32:09,722 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 87 [2021-11-07 07:32:09,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:09,722 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2021-11-07 07:32:09,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:09,723 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2021-11-07 07:32:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 07:32:09,724 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:09,724 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 12, 12, 1, 1] [2021-11-07 07:32:09,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:09,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 07:32:09,938 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:09,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash -251861523, now seen corresponding path program 12 times [2021-11-07 07:32:09,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:09,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075906718] [2021-11-07 07:32:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:09,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:10,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:10,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075906718] [2021-11-07 07:32:10,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075906718] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:10,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792020590] [2021-11-07 07:32:10,089 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:32:10,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:10,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:10,090 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:10,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 07:32:10,564 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-07 07:32:10,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:10,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 07:32:10,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 522 backedges. 0 proven. 522 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:10,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792020590] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:10,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:10,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-11-07 07:32:10,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477748702] [2021-11-07 07:32:10,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 07:32:10,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:10,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 07:32:10,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:32:10,880 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand has 15 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:10,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:10,919 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2021-11-07 07:32:10,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 07:32:10,920 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-11-07 07:32:10,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:10,921 INFO L225 Difference]: With dead ends: 100 [2021-11-07 07:32:10,921 INFO L226 Difference]: Without dead ends: 99 [2021-11-07 07:32:10,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:32:10,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-07 07:32:10,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-11-07 07:32:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 98 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:10,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2021-11-07 07:32:10,927 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 90 [2021-11-07 07:32:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:10,927 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2021-11-07 07:32:10,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2021-11-07 07:32:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-07 07:32:10,929 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:10,929 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 1, 1] [2021-11-07 07:32:10,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:11,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:11,154 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:11,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:11,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1155159503, now seen corresponding path program 13 times [2021-11-07 07:32:11,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:11,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811129578] [2021-11-07 07:32:11,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:11,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:11,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:11,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811129578] [2021-11-07 07:32:11,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811129578] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:11,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691367881] [2021-11-07 07:32:11,309 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:32:11,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:11,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:11,311 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:11,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 07:32:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:11,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 07:32:11,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:12,099 INFO L134 CoverageAnalysis]: Checked inductivity of 572 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:12,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691367881] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:12,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:12,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-11-07 07:32:12,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386298239] [2021-11-07 07:32:12,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 07:32:12,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:12,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 07:32:12,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:32:12,101 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 16 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:12,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:12,142 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions. [2021-11-07 07:32:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 07:32:12,143 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2021-11-07 07:32:12,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:12,144 INFO L225 Difference]: With dead ends: 105 [2021-11-07 07:32:12,144 INFO L226 Difference]: Without dead ends: 104 [2021-11-07 07:32:12,145 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:32:12,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-07 07:32:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2021-11-07 07:32:12,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 101 states have (on average 1.0198019801980198) internal successors, (103), 102 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:12,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 103 transitions. [2021-11-07 07:32:12,149 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 103 transitions. Word has length 94 [2021-11-07 07:32:12,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:12,149 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 103 transitions. [2021-11-07 07:32:12,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.266666666666667) internal successors, (94), 15 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:12,150 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 103 transitions. [2021-11-07 07:32:12,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 07:32:12,151 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:12,151 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 13, 13, 1, 1] [2021-11-07 07:32:12,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:12,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:12,366 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:12,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:12,366 INFO L85 PathProgramCache]: Analyzing trace with hash -2078734563, now seen corresponding path program 13 times [2021-11-07 07:32:12,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:12,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248728965] [2021-11-07 07:32:12,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:12,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:12,513 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 611 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:12,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:12,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248728965] [2021-11-07 07:32:12,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248728965] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:12,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955992500] [2021-11-07 07:32:12,514 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:32:12,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:12,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:12,522 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:12,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 07:32:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:13,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 07:32:13,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 0 proven. 611 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:13,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955992500] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:13,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:13,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-11-07 07:32:13,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063184587] [2021-11-07 07:32:13,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 07:32:13,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:13,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 07:32:13,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:32:13,256 INFO L87 Difference]: Start difference. First operand 103 states and 103 transitions. Second operand has 16 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:13,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:13,293 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2021-11-07 07:32:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 07:32:13,294 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-07 07:32:13,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:13,295 INFO L225 Difference]: With dead ends: 107 [2021-11-07 07:32:13,295 INFO L226 Difference]: Without dead ends: 106 [2021-11-07 07:32:13,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:32:13,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-11-07 07:32:13,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2021-11-07 07:32:13,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 104 states have (on average 1.0192307692307692) internal successors, (106), 105 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2021-11-07 07:32:13,303 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 97 [2021-11-07 07:32:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:13,303 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2021-11-07 07:32:13,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:13,303 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2021-11-07 07:32:13,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-07 07:32:13,304 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:13,305 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 1, 1] [2021-11-07 07:32:13,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:13,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:13,522 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:13,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:13,522 INFO L85 PathProgramCache]: Analyzing trace with hash 871215969, now seen corresponding path program 14 times [2021-11-07 07:32:13,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:13,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481038019] [2021-11-07 07:32:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:13,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:13,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:13,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481038019] [2021-11-07 07:32:13,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481038019] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:13,699 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857161007] [2021-11-07 07:32:13,699 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:32:13,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:13,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:13,701 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:13,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-07 07:32:14,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:32:14,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:14,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 07:32:14,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:14,428 INFO L134 CoverageAnalysis]: Checked inductivity of 665 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:14,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857161007] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:14,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:14,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-11-07 07:32:14,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690178792] [2021-11-07 07:32:14,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 07:32:14,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:14,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 07:32:14,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-11-07 07:32:14,431 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand has 17 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:14,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:14,469 INFO L93 Difference]: Finished difference Result 112 states and 112 transitions. [2021-11-07 07:32:14,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 07:32:14,470 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2021-11-07 07:32:14,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:14,471 INFO L225 Difference]: With dead ends: 112 [2021-11-07 07:32:14,471 INFO L226 Difference]: Without dead ends: 111 [2021-11-07 07:32:14,472 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-11-07 07:32:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-11-07 07:32:14,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 110. [2021-11-07 07:32:14,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 109 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2021-11-07 07:32:14,479 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 101 [2021-11-07 07:32:14,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:14,480 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2021-11-07 07:32:14,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.3125) internal successors, (101), 16 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:14,480 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2021-11-07 07:32:14,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-07 07:32:14,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:14,481 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 14, 14, 1, 1] [2021-11-07 07:32:14,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:14,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:14,706 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:14,706 INFO L85 PathProgramCache]: Analyzing trace with hash -92393491, now seen corresponding path program 14 times [2021-11-07 07:32:14,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:14,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598908315] [2021-11-07 07:32:14,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:14,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:14,866 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:14,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:14,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598908315] [2021-11-07 07:32:14,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598908315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:14,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750432409] [2021-11-07 07:32:14,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:32:14,866 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:14,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:14,882 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:14,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-07 07:32:15,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:32:15,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:15,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 07:32:15,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 0 proven. 707 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:15,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750432409] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:15,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:15,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-11-07 07:32:15,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957906910] [2021-11-07 07:32:15,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 07:32:15,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:15,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 07:32:15,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-11-07 07:32:15,641 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 17 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:15,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:15,676 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2021-11-07 07:32:15,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 07:32:15,676 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-11-07 07:32:15,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:15,677 INFO L225 Difference]: With dead ends: 114 [2021-11-07 07:32:15,677 INFO L226 Difference]: Without dead ends: 113 [2021-11-07 07:32:15,677 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-11-07 07:32:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-07 07:32:15,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-11-07 07:32:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 111 states have (on average 1.018018018018018) internal successors, (113), 112 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:15,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2021-11-07 07:32:15,680 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 104 [2021-11-07 07:32:15,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:15,680 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2021-11-07 07:32:15,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:15,681 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2021-11-07 07:32:15,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-07 07:32:15,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:15,681 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 1, 1] [2021-11-07 07:32:15,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:15,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-07 07:32:15,882 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:15,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash 787608625, now seen corresponding path program 15 times [2021-11-07 07:32:15,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:15,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787015645] [2021-11-07 07:32:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:15,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:15,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:16,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:16,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787015645] [2021-11-07 07:32:16,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787015645] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:16,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1690809332] [2021-11-07 07:32:16,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:32:16,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:16,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:16,054 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:16,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-07 07:32:16,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-07 07:32:16,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:16,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 07:32:16,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:16,867 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:16,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1690809332] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:16,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:16,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-11-07 07:32:16,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417514453] [2021-11-07 07:32:16,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 07:32:16,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 07:32:16,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:32:16,870 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand has 18 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:16,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:16,914 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2021-11-07 07:32:16,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 07:32:16,915 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-07 07:32:16,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:16,915 INFO L225 Difference]: With dead ends: 119 [2021-11-07 07:32:16,915 INFO L226 Difference]: Without dead ends: 118 [2021-11-07 07:32:16,916 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:32:16,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-07 07:32:16,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2021-11-07 07:32:16,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.017391304347826) internal successors, (117), 116 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:16,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2021-11-07 07:32:16,919 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 108 [2021-11-07 07:32:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:16,920 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2021-11-07 07:32:16,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:16,920 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2021-11-07 07:32:16,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 07:32:16,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:16,921 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 15, 15, 1, 1] [2021-11-07 07:32:16,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:17,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:17,134 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:17,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:17,134 INFO L85 PathProgramCache]: Analyzing trace with hash 242253085, now seen corresponding path program 15 times [2021-11-07 07:32:17,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:17,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98229882] [2021-11-07 07:32:17,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:17,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:17,318 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 0 proven. 810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:17,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:17,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98229882] [2021-11-07 07:32:17,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98229882] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:17,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614225082] [2021-11-07 07:32:17,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:32:17,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:17,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:17,322 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:17,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-07 07:32:17,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-07 07:32:17,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:17,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 07:32:17,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 810 backedges. 0 proven. 810 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:18,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614225082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:18,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:18,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-11-07 07:32:18,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990680543] [2021-11-07 07:32:18,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 07:32:18,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 07:32:18,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:32:18,267 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand has 18 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:18,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:18,307 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2021-11-07 07:32:18,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 07:32:18,307 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-07 07:32:18,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:18,308 INFO L225 Difference]: With dead ends: 121 [2021-11-07 07:32:18,309 INFO L226 Difference]: Without dead ends: 120 [2021-11-07 07:32:18,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:32:18,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-07 07:32:18,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-11-07 07:32:18,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.0169491525423728) internal successors, (120), 119 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:18,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions. [2021-11-07 07:32:18,313 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 111 [2021-11-07 07:32:18,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:18,314 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions. [2021-11-07 07:32:18,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 6.529411764705882) internal successors, (111), 17 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:18,314 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions. [2021-11-07 07:32:18,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 07:32:18,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:18,316 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 1, 1] [2021-11-07 07:32:18,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:18,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-07 07:32:18,538 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:18,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:18,538 INFO L85 PathProgramCache]: Analyzing trace with hash 966404449, now seen corresponding path program 16 times [2021-11-07 07:32:18,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:18,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901610257] [2021-11-07 07:32:18,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:18,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:18,751 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 0 proven. 872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:18,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:18,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901610257] [2021-11-07 07:32:18,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901610257] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:18,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661611601] [2021-11-07 07:32:18,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:32:18,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:18,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:18,758 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:18,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-07 07:32:19,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:32:19,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:19,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:32:19,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:19,810 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 0 proven. 872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:19,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661611601] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:19,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:19,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-11-07 07:32:19,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82562826] [2021-11-07 07:32:19,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 07:32:19,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:19,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 07:32:19,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:32:19,812 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand has 19 states, 18 states have (on average 6.388888888888889) internal successors, (115), 18 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:19,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:19,861 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2021-11-07 07:32:19,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 07:32:19,861 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.388888888888889) internal successors, (115), 18 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2021-11-07 07:32:19,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:19,863 INFO L225 Difference]: With dead ends: 126 [2021-11-07 07:32:19,863 INFO L226 Difference]: Without dead ends: 125 [2021-11-07 07:32:19,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:32:19,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-07 07:32:19,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-11-07 07:32:19,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 122 states have (on average 1.0163934426229508) internal successors, (124), 123 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2021-11-07 07:32:19,868 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 115 [2021-11-07 07:32:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:19,868 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2021-11-07 07:32:19,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.388888888888889) internal successors, (115), 18 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2021-11-07 07:32:19,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-07 07:32:19,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:19,869 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 16, 16, 1, 1] [2021-11-07 07:32:19,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:20,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-07 07:32:20,094 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:20,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:20,095 INFO L85 PathProgramCache]: Analyzing trace with hash 989198829, now seen corresponding path program 16 times [2021-11-07 07:32:20,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:20,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314334611] [2021-11-07 07:32:20,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:20,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 0 proven. 920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:20,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:20,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314334611] [2021-11-07 07:32:20,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314334611] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:20,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913434663] [2021-11-07 07:32:20,313 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:32:20,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:20,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:20,314 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:20,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-07 07:32:20,987 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:32:20,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:20,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:32:20,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:21,308 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 0 proven. 920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:21,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913434663] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:21,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:21,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-11-07 07:32:21,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889195636] [2021-11-07 07:32:21,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 07:32:21,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:21,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 07:32:21,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:32:21,312 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand has 19 states, 18 states have (on average 6.555555555555555) internal successors, (118), 18 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:21,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:21,359 INFO L93 Difference]: Finished difference Result 128 states and 128 transitions. [2021-11-07 07:32:21,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 07:32:21,359 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 6.555555555555555) internal successors, (118), 18 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 118 [2021-11-07 07:32:21,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:21,361 INFO L225 Difference]: With dead ends: 128 [2021-11-07 07:32:21,361 INFO L226 Difference]: Without dead ends: 127 [2021-11-07 07:32:21,361 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:32:21,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-11-07 07:32:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2021-11-07 07:32:21,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 125 states have (on average 1.016) internal successors, (127), 126 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:21,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2021-11-07 07:32:21,366 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 118 [2021-11-07 07:32:21,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:21,366 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2021-11-07 07:32:21,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 6.555555555555555) internal successors, (118), 18 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:21,367 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2021-11-07 07:32:21,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 07:32:21,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:21,367 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 1, 1] [2021-11-07 07:32:21,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:21,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-07 07:32:21,594 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:21,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:21,594 INFO L85 PathProgramCache]: Analyzing trace with hash 2054471217, now seen corresponding path program 17 times [2021-11-07 07:32:21,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:21,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364180148] [2021-11-07 07:32:21,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:21,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 0 proven. 986 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:21,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:21,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364180148] [2021-11-07 07:32:21,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364180148] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:21,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114725123] [2021-11-07 07:32:21,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:32:21,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:21,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:21,830 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:21,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-07 07:32:22,469 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-07 07:32:22,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:22,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 07:32:22,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:22,803 INFO L134 CoverageAnalysis]: Checked inductivity of 986 backedges. 0 proven. 986 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:22,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114725123] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:22,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:22,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-11-07 07:32:22,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050882456] [2021-11-07 07:32:22,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 07:32:22,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:22,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 07:32:22,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:32:22,805 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand has 20 states, 19 states have (on average 6.421052631578948) internal successors, (122), 19 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:22,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:22,854 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions. [2021-11-07 07:32:22,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 07:32:22,855 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.421052631578948) internal successors, (122), 19 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 07:32:22,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:22,856 INFO L225 Difference]: With dead ends: 133 [2021-11-07 07:32:22,856 INFO L226 Difference]: Without dead ends: 132 [2021-11-07 07:32:22,856 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:32:22,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-07 07:32:22,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 131. [2021-11-07 07:32:22,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 129 states have (on average 1.0155038759689923) internal successors, (131), 130 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2021-11-07 07:32:22,861 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 122 [2021-11-07 07:32:22,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:22,861 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2021-11-07 07:32:22,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.421052631578948) internal successors, (122), 19 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:22,862 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2021-11-07 07:32:22,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 07:32:22,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:22,863 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 17, 17, 1, 1] [2021-11-07 07:32:22,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:23,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-07 07:32:23,083 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:23,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:23,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1468101405, now seen corresponding path program 17 times [2021-11-07 07:32:23,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:23,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654873870] [2021-11-07 07:32:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:23,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:23,310 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 0 proven. 1037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:23,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:23,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654873870] [2021-11-07 07:32:23,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654873870] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:23,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190936819] [2021-11-07 07:32:23,311 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:32:23,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:23,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:23,314 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:23,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-07 07:32:23,984 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-07 07:32:23,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:23,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 07:32:23,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:24,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1037 backedges. 0 proven. 1037 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:24,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190936819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:24,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:24,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-11-07 07:32:24,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148914899] [2021-11-07 07:32:24,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 07:32:24,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:24,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 07:32:24,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:32:24,314 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand has 20 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:24,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:24,374 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2021-11-07 07:32:24,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 07:32:24,374 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 07:32:24,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:24,375 INFO L225 Difference]: With dead ends: 135 [2021-11-07 07:32:24,375 INFO L226 Difference]: Without dead ends: 134 [2021-11-07 07:32:24,376 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:32:24,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-11-07 07:32:24,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-11-07 07:32:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 133 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:24,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-11-07 07:32:24,380 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 125 [2021-11-07 07:32:24,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:24,380 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-11-07 07:32:24,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.578947368421052) internal successors, (125), 19 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:24,380 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-11-07 07:32:24,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-07 07:32:24,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:24,381 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 1, 1] [2021-11-07 07:32:24,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:24,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-07 07:32:24,606 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:24,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:24,606 INFO L85 PathProgramCache]: Analyzing trace with hash 88088417, now seen corresponding path program 18 times [2021-11-07 07:32:24,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:24,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618469341] [2021-11-07 07:32:24,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:24,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:24,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:24,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618469341] [2021-11-07 07:32:24,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618469341] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:24,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284479646] [2021-11-07 07:32:24,860 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:32:24,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:24,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:24,861 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:24,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-07 07:32:25,684 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-07 07:32:25,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:25,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 07:32:25,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1107 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:25,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284479646] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:25,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:25,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-11-07 07:32:25,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947613238] [2021-11-07 07:32:25,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 07:32:25,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:25,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 07:32:25,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:32:25,993 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 21 states, 20 states have (on average 6.45) internal successors, (129), 20 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:26,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:26,048 INFO L93 Difference]: Finished difference Result 140 states and 140 transitions. [2021-11-07 07:32:26,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 07:32:26,048 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 6.45) internal successors, (129), 20 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-07 07:32:26,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:26,049 INFO L225 Difference]: With dead ends: 140 [2021-11-07 07:32:26,049 INFO L226 Difference]: Without dead ends: 139 [2021-11-07 07:32:26,054 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:32:26,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-07 07:32:26,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2021-11-07 07:32:26,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 136 states have (on average 1.0147058823529411) internal successors, (138), 137 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:26,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2021-11-07 07:32:26,059 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 129 [2021-11-07 07:32:26,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:26,060 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2021-11-07 07:32:26,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 6.45) internal successors, (129), 20 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:26,060 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2021-11-07 07:32:26,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 07:32:26,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:26,061 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 18, 18, 1, 1] [2021-11-07 07:32:26,100 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-11-07 07:32:26,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:26,290 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:26,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:26,290 INFO L85 PathProgramCache]: Analyzing trace with hash 17056749, now seen corresponding path program 18 times [2021-11-07 07:32:26,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:26,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968925224] [2021-11-07 07:32:26,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:26,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 0 proven. 1161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:26,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:26,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968925224] [2021-11-07 07:32:26,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968925224] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:26,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60293793] [2021-11-07 07:32:26,546 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:32:26,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:26,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:26,550 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:26,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-07 07:32:27,305 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-07 07:32:27,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:27,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 07:32:27,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 1161 backedges. 0 proven. 1161 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:27,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60293793] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:27,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:27,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-11-07 07:32:27,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54556957] [2021-11-07 07:32:27,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 07:32:27,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:27,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 07:32:27,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:32:27,665 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand has 21 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:27,727 INFO L93 Difference]: Finished difference Result 142 states and 142 transitions. [2021-11-07 07:32:27,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 07:32:27,727 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2021-11-07 07:32:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:27,729 INFO L225 Difference]: With dead ends: 142 [2021-11-07 07:32:27,729 INFO L226 Difference]: Without dead ends: 141 [2021-11-07 07:32:27,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:32:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-07 07:32:27,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2021-11-07 07:32:27,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 139 states have (on average 1.014388489208633) internal successors, (141), 140 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:27,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 141 transitions. [2021-11-07 07:32:27,734 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 141 transitions. Word has length 132 [2021-11-07 07:32:27,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:27,734 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 141 transitions. [2021-11-07 07:32:27,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:27,735 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 141 transitions. [2021-11-07 07:32:27,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-07 07:32:27,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:27,736 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 1, 1] [2021-11-07 07:32:27,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:27,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:27,950 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:27,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:27,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1672607695, now seen corresponding path program 19 times [2021-11-07 07:32:27,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:27,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014469449] [2021-11-07 07:32:27,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:27,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:28,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:28,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014469449] [2021-11-07 07:32:28,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014469449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:28,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244851334] [2021-11-07 07:32:28,215 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:32:28,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:28,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:28,218 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:28,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-07 07:32:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:29,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 07:32:29,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:29,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1235 backedges. 0 proven. 1235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:29,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244851334] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:29,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:29,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-11-07 07:32:29,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924137430] [2021-11-07 07:32:29,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 07:32:29,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:29,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 07:32:29,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:32:29,368 INFO L87 Difference]: Start difference. First operand 141 states and 141 transitions. Second operand has 22 states, 21 states have (on average 6.476190476190476) internal successors, (136), 21 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:29,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:29,426 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions. [2021-11-07 07:32:29,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 07:32:29,426 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.476190476190476) internal successors, (136), 21 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-07 07:32:29,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:29,427 INFO L225 Difference]: With dead ends: 147 [2021-11-07 07:32:29,428 INFO L226 Difference]: Without dead ends: 146 [2021-11-07 07:32:29,428 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:32:29,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-11-07 07:32:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 145. [2021-11-07 07:32:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 143 states have (on average 1.013986013986014) internal successors, (145), 144 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 145 transitions. [2021-11-07 07:32:29,433 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 145 transitions. Word has length 136 [2021-11-07 07:32:29,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:29,433 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 145 transitions. [2021-11-07 07:32:29,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.476190476190476) internal successors, (136), 21 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:29,433 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 145 transitions. [2021-11-07 07:32:29,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-07 07:32:29,434 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:29,434 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 1, 1] [2021-11-07 07:32:29,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:29,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-07 07:32:29,653 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1554770205, now seen corresponding path program 19 times [2021-11-07 07:32:29,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:29,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887504687] [2021-11-07 07:32:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:29,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:29,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 1292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:29,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:29,921 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887504687] [2021-11-07 07:32:29,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887504687] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:29,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871099958] [2021-11-07 07:32:29,922 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:32:29,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:29,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:29,923 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:29,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-07 07:32:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:30,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 07:32:30,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:31,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 0 proven. 1292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:31,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871099958] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:31,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:31,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-11-07 07:32:31,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710056885] [2021-11-07 07:32:31,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 07:32:31,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:31,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 07:32:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:32:31,161 INFO L87 Difference]: Start difference. First operand 145 states and 145 transitions. Second operand has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 21 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:31,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:31,225 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2021-11-07 07:32:31,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 07:32:31,226 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 21 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 139 [2021-11-07 07:32:31,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:31,227 INFO L225 Difference]: With dead ends: 149 [2021-11-07 07:32:31,227 INFO L226 Difference]: Without dead ends: 148 [2021-11-07 07:32:31,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:32:31,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-07 07:32:31,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2021-11-07 07:32:31,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 146 states have (on average 1.0136986301369864) internal successors, (148), 147 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:31,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions. [2021-11-07 07:32:31,231 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 139 [2021-11-07 07:32:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:31,231 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions. [2021-11-07 07:32:31,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.619047619047619) internal successors, (139), 21 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions. [2021-11-07 07:32:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 07:32:31,232 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:31,232 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 1, 1] [2021-11-07 07:32:31,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-11-07 07:32:31,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-11-07 07:32:31,433 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash -465595039, now seen corresponding path program 20 times [2021-11-07 07:32:31,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:31,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947012676] [2021-11-07 07:32:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:31,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:31,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:31,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947012676] [2021-11-07 07:32:31,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947012676] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:31,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386930941] [2021-11-07 07:32:31,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:32:31,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:31,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:31,682 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:31,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-07 07:32:32,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:32:32,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:32,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 07:32:32,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:32,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386930941] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:32,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:32,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-11-07 07:32:32,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008507328] [2021-11-07 07:32:32,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 07:32:32,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:32,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 07:32:32,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-11-07 07:32:32,924 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand has 23 states, 22 states have (on average 6.5) internal successors, (143), 22 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:32,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:32,994 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2021-11-07 07:32:32,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 07:32:32,995 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.5) internal successors, (143), 22 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-07 07:32:32,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:32,996 INFO L225 Difference]: With dead ends: 154 [2021-11-07 07:32:32,997 INFO L226 Difference]: Without dead ends: 153 [2021-11-07 07:32:32,997 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-11-07 07:32:32,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-07 07:32:33,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-11-07 07:32:33,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 150 states have (on average 1.0133333333333334) internal successors, (152), 151 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:33,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2021-11-07 07:32:33,002 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 143 [2021-11-07 07:32:33,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:33,003 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2021-11-07 07:32:33,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.5) internal successors, (143), 22 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:33,003 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2021-11-07 07:32:33,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-07 07:32:33,004 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:33,004 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 20, 20, 1, 1] [2021-11-07 07:32:33,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:33,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-07 07:32:33,226 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:33,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2092364307, now seen corresponding path program 20 times [2021-11-07 07:32:33,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:33,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481147554] [2021-11-07 07:32:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:33,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:33,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:33,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:33,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481147554] [2021-11-07 07:32:33,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481147554] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:33,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939690086] [2021-11-07 07:32:33,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:32:33,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:33,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:33,494 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:33,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-07 07:32:34,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:32:34,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:34,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 07:32:34,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:34,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 1430 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:34,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939690086] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:34,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:34,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-11-07 07:32:34,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599687149] [2021-11-07 07:32:34,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 07:32:34,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:34,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 07:32:34,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-11-07 07:32:34,883 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand has 23 states, 22 states have (on average 6.636363636363637) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:34,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:34,949 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2021-11-07 07:32:34,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 07:32:34,950 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.636363636363637) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-07 07:32:34,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:34,951 INFO L225 Difference]: With dead ends: 156 [2021-11-07 07:32:34,951 INFO L226 Difference]: Without dead ends: 155 [2021-11-07 07:32:34,952 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-11-07 07:32:34,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-07 07:32:34,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-11-07 07:32:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 153 states have (on average 1.0130718954248366) internal successors, (155), 154 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 155 transitions. [2021-11-07 07:32:34,955 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 155 transitions. Word has length 146 [2021-11-07 07:32:34,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:34,956 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 155 transitions. [2021-11-07 07:32:34,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.636363636363637) internal successors, (146), 22 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:34,956 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 155 transitions. [2021-11-07 07:32:34,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-07 07:32:34,957 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:34,957 INFO L513 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 21, 21, 1, 1] [2021-11-07 07:32:34,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-11-07 07:32:35,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-07 07:32:35,181 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:35,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:35,181 INFO L85 PathProgramCache]: Analyzing trace with hash 2065551921, now seen corresponding path program 21 times [2021-11-07 07:32:35,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:35,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427203683] [2021-11-07 07:32:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:35,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 1512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:35,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:35,462 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427203683] [2021-11-07 07:32:35,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427203683] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:35,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073535855] [2021-11-07 07:32:35,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:32:35,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:35,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:35,464 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:35,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-07 07:32:36,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-07 07:32:36,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:36,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 07:32:36,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:36,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 1512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:36,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073535855] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:36,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:36,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-11-07 07:32:36,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370268102] [2021-11-07 07:32:36,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 07:32:36,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:36,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 07:32:36,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-07 07:32:36,807 INFO L87 Difference]: Start difference. First operand 155 states and 155 transitions. Second operand has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:36,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:36,866 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2021-11-07 07:32:36,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 07:32:36,867 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-11-07 07:32:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:36,871 INFO L225 Difference]: With dead ends: 161 [2021-11-07 07:32:36,871 INFO L226 Difference]: Without dead ends: 160 [2021-11-07 07:32:36,871 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-07 07:32:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-07 07:32:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2021-11-07 07:32:36,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 157 states have (on average 1.0127388535031847) internal successors, (159), 158 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:36,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2021-11-07 07:32:36,876 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 150 [2021-11-07 07:32:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:36,877 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2021-11-07 07:32:36,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.521739130434782) internal successors, (150), 23 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2021-11-07 07:32:36,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-07 07:32:36,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:36,878 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 21, 21, 1, 1] [2021-11-07 07:32:36,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:37,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-07 07:32:37,094 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:37,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:37,094 INFO L85 PathProgramCache]: Analyzing trace with hash 860872477, now seen corresponding path program 21 times [2021-11-07 07:32:37,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:37,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921915414] [2021-11-07 07:32:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:37,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:37,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 1575 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:37,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:37,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921915414] [2021-11-07 07:32:37,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921915414] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:37,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156605911] [2021-11-07 07:32:37,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:32:37,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:37,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:37,377 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:37,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-07 07:32:38,420 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-07 07:32:38,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:38,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 07:32:38,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:38,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1575 backedges. 0 proven. 1575 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:38,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156605911] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:38,859 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:38,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-11-07 07:32:38,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65499186] [2021-11-07 07:32:38,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 07:32:38,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:38,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 07:32:38,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-07 07:32:38,861 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand has 24 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 23 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:38,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:38,921 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions. [2021-11-07 07:32:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 07:32:38,921 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 23 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-11-07 07:32:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:38,923 INFO L225 Difference]: With dead ends: 163 [2021-11-07 07:32:38,923 INFO L226 Difference]: Without dead ends: 162 [2021-11-07 07:32:38,923 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-07 07:32:38,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-07 07:32:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-11-07 07:32:38,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 160 states have (on average 1.0125) internal successors, (162), 161 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:38,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2021-11-07 07:32:38,929 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 153 [2021-11-07 07:32:38,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:38,930 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2021-11-07 07:32:38,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.6521739130434785) internal successors, (153), 23 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:38,930 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2021-11-07 07:32:38,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-07 07:32:38,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:38,932 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 1, 1] [2021-11-07 07:32:38,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:39,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:39,158 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:39,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:39,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1006144353, now seen corresponding path program 22 times [2021-11-07 07:32:39,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:39,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035006368] [2021-11-07 07:32:39,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:39,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:39,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:39,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:39,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035006368] [2021-11-07 07:32:39,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035006368] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:39,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146064192] [2021-11-07 07:32:39,518 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:32:39,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:39,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:39,522 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:39,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-07 07:32:40,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:32:40,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:40,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 07:32:40,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:40,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146064192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:40,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:40,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-11-07 07:32:40,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222575342] [2021-11-07 07:32:40,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 07:32:40,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:40,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 07:32:40,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-07 07:32:40,932 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 25 states, 24 states have (on average 6.541666666666667) internal successors, (157), 24 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:41,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:41,012 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2021-11-07 07:32:41,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 07:32:41,013 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.541666666666667) internal successors, (157), 24 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 157 [2021-11-07 07:32:41,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:41,014 INFO L225 Difference]: With dead ends: 168 [2021-11-07 07:32:41,014 INFO L226 Difference]: Without dead ends: 167 [2021-11-07 07:32:41,015 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-07 07:32:41,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-11-07 07:32:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 166. [2021-11-07 07:32:41,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 164 states have (on average 1.0121951219512195) internal successors, (166), 165 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2021-11-07 07:32:41,032 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 157 [2021-11-07 07:32:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:41,032 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2021-11-07 07:32:41,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.541666666666667) internal successors, (157), 24 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2021-11-07 07:32:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-07 07:32:41,034 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:41,034 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 22, 1, 1] [2021-11-07 07:32:41,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:41,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:41,244 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -530294803, now seen corresponding path program 22 times [2021-11-07 07:32:41,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:41,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041150716] [2021-11-07 07:32:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:41,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:41,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:41,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:41,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:41,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041150716] [2021-11-07 07:32:41,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041150716] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:41,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301601739] [2021-11-07 07:32:41,564 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:32:41,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:41,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:41,566 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:41,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-07 07:32:42,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:32:42,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:42,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 07:32:42,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:43,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1727 backedges. 0 proven. 1727 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:43,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301601739] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:43,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:43,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-11-07 07:32:43,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224287230] [2021-11-07 07:32:43,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 07:32:43,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:43,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 07:32:43,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-07 07:32:43,056 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:43,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:43,104 INFO L93 Difference]: Finished difference Result 170 states and 170 transitions. [2021-11-07 07:32:43,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 07:32:43,104 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-07 07:32:43,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:43,105 INFO L225 Difference]: With dead ends: 170 [2021-11-07 07:32:43,105 INFO L226 Difference]: Without dead ends: 169 [2021-11-07 07:32:43,106 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-07 07:32:43,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-07 07:32:43,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2021-11-07 07:32:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 168 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2021-11-07 07:32:43,111 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 160 [2021-11-07 07:32:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:43,111 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2021-11-07 07:32:43,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 6.666666666666667) internal successors, (160), 24 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2021-11-07 07:32:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-07 07:32:43,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:43,113 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 23, 23, 1, 1] [2021-11-07 07:32:43,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-11-07 07:32:43,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-07 07:32:43,334 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:43,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:43,334 INFO L85 PathProgramCache]: Analyzing trace with hash -444326863, now seen corresponding path program 23 times [2021-11-07 07:32:43,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:43,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382960941] [2021-11-07 07:32:43,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:43,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:43,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1817 backedges. 0 proven. 1817 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:43,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:43,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382960941] [2021-11-07 07:32:43,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382960941] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:43,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046534883] [2021-11-07 07:32:43,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:32:43,677 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:43,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:43,682 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:43,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-07 07:32:44,906 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-07 07:32:44,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:44,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 07:32:44,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1817 backedges. 0 proven. 1817 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:45,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046534883] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:45,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:45,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-11-07 07:32:45,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120670634] [2021-11-07 07:32:45,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 07:32:45,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:45,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 07:32:45,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-11-07 07:32:45,318 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand has 26 states, 25 states have (on average 6.56) internal successors, (164), 25 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:45,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:45,377 INFO L93 Difference]: Finished difference Result 175 states and 175 transitions. [2021-11-07 07:32:45,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 07:32:45,377 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 6.56) internal successors, (164), 25 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-07 07:32:45,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:45,379 INFO L225 Difference]: With dead ends: 175 [2021-11-07 07:32:45,379 INFO L226 Difference]: Without dead ends: 174 [2021-11-07 07:32:45,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-11-07 07:32:45,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-11-07 07:32:45,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 173. [2021-11-07 07:32:45,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 172 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:45,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 173 transitions. [2021-11-07 07:32:45,384 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 173 transitions. Word has length 164 [2021-11-07 07:32:45,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:45,385 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 173 transitions. [2021-11-07 07:32:45,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 6.56) internal successors, (164), 25 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:45,385 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 173 transitions. [2021-11-07 07:32:45,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 07:32:45,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:45,387 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 23, 23, 1, 1] [2021-11-07 07:32:45,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:45,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:45,594 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:45,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:45,594 INFO L85 PathProgramCache]: Analyzing trace with hash 147674397, now seen corresponding path program 23 times [2021-11-07 07:32:45,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:45,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348013245] [2021-11-07 07:32:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:45,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 0 proven. 1886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:45,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:45,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348013245] [2021-11-07 07:32:45,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348013245] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:45,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269549967] [2021-11-07 07:32:45,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:32:45,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:45,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:45,958 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:45,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-07 07:32:47,374 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-07 07:32:47,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:47,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 07:32:47,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 0 proven. 1886 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:47,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269549967] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:47,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:47,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-11-07 07:32:47,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924106755] [2021-11-07 07:32:47,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 07:32:47,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:47,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 07:32:47,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-11-07 07:32:47,833 INFO L87 Difference]: Start difference. First operand 173 states and 173 transitions. Second operand has 26 states, 25 states have (on average 6.68) internal successors, (167), 25 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:47,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:47,897 INFO L93 Difference]: Finished difference Result 177 states and 177 transitions. [2021-11-07 07:32:47,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 07:32:47,898 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 6.68) internal successors, (167), 25 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 167 [2021-11-07 07:32:47,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:47,900 INFO L225 Difference]: With dead ends: 177 [2021-11-07 07:32:47,900 INFO L226 Difference]: Without dead ends: 176 [2021-11-07 07:32:47,900 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-11-07 07:32:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-07 07:32:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-11-07 07:32:47,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 174 states have (on average 1.0114942528735633) internal successors, (176), 175 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:47,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2021-11-07 07:32:47,909 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 167 [2021-11-07 07:32:47,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:47,910 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2021-11-07 07:32:47,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 6.68) internal successors, (167), 25 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:47,911 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2021-11-07 07:32:47,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-07 07:32:47,912 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:47,912 INFO L513 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 1, 1] [2021-11-07 07:32:47,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:48,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:48,138 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:48,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:48,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1983184543, now seen corresponding path program 24 times [2021-11-07 07:32:48,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:48,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116780819] [2021-11-07 07:32:48,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:48,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:48,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:48,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116780819] [2021-11-07 07:32:48,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116780819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:48,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415689901] [2021-11-07 07:32:48,567 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:32:48,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:48,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:48,570 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:48,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-07 07:32:49,871 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-07 07:32:49,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:49,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 07:32:49,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:50,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415689901] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:50,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:50,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-11-07 07:32:50,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342635813] [2021-11-07 07:32:50,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 07:32:50,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:50,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 07:32:50,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-11-07 07:32:50,281 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand has 27 states, 26 states have (on average 6.576923076923077) internal successors, (171), 26 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:50,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:50,347 INFO L93 Difference]: Finished difference Result 182 states and 182 transitions. [2021-11-07 07:32:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 07:32:50,350 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 6.576923076923077) internal successors, (171), 26 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2021-11-07 07:32:50,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:50,351 INFO L225 Difference]: With dead ends: 182 [2021-11-07 07:32:50,351 INFO L226 Difference]: Without dead ends: 181 [2021-11-07 07:32:50,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-11-07 07:32:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-07 07:32:50,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2021-11-07 07:32:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 178 states have (on average 1.0112359550561798) internal successors, (180), 179 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:50,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 180 transitions. [2021-11-07 07:32:50,359 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 180 transitions. Word has length 171 [2021-11-07 07:32:50,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:50,359 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 180 transitions. [2021-11-07 07:32:50,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 6.576923076923077) internal successors, (171), 26 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:50,359 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 180 transitions. [2021-11-07 07:32:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-11-07 07:32:50,360 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:50,360 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 24, 24, 1, 1] [2021-11-07 07:32:50,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:50,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-11-07 07:32:50,585 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:50,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:50,585 INFO L85 PathProgramCache]: Analyzing trace with hash 519447021, now seen corresponding path program 24 times [2021-11-07 07:32:50,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:50,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957892311] [2021-11-07 07:32:50,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:50,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:50,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2052 backedges. 0 proven. 2052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:50,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:50,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957892311] [2021-11-07 07:32:50,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957892311] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:50,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863392288] [2021-11-07 07:32:50,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:32:50,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:50,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:50,978 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:50,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-07 07:32:52,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-07 07:32:52,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:52,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 07:32:52,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2052 backedges. 0 proven. 2052 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:52,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863392288] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:52,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:52,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-11-07 07:32:52,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727916050] [2021-11-07 07:32:52,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 07:32:52,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:52,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 07:32:52,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-11-07 07:32:52,755 INFO L87 Difference]: Start difference. First operand 180 states and 180 transitions. Second operand has 27 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:52,825 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2021-11-07 07:32:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 07:32:52,826 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 174 [2021-11-07 07:32:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:52,830 INFO L225 Difference]: With dead ends: 184 [2021-11-07 07:32:52,830 INFO L226 Difference]: Without dead ends: 183 [2021-11-07 07:32:52,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-11-07 07:32:52,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-07 07:32:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2021-11-07 07:32:52,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 181 states have (on average 1.011049723756906) internal successors, (183), 182 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:52,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 183 transitions. [2021-11-07 07:32:52,848 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 183 transitions. Word has length 174 [2021-11-07 07:32:52,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:52,849 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 183 transitions. [2021-11-07 07:32:52,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 6.6923076923076925) internal successors, (174), 26 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:52,849 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 183 transitions. [2021-11-07 07:32:52,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-07 07:32:52,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:52,850 INFO L513 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 25, 25, 1, 1] [2021-11-07 07:32:52,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:53,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:53,074 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:53,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:53,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1843337679, now seen corresponding path program 25 times [2021-11-07 07:32:53,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:53,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040889100] [2021-11-07 07:32:53,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:53,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:53,419 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 0 proven. 2150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:53,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:53,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040889100] [2021-11-07 07:32:53,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040889100] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:53,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351506733] [2021-11-07 07:32:53,420 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:32:53,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:53,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:53,421 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:53,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-07 07:32:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:54,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 07:32:54,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:55,225 INFO L134 CoverageAnalysis]: Checked inductivity of 2150 backedges. 0 proven. 2150 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:55,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351506733] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:55,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:55,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-11-07 07:32:55,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423654919] [2021-11-07 07:32:55,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 07:32:55,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:55,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 07:32:55,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:32:55,228 INFO L87 Difference]: Start difference. First operand 183 states and 183 transitions. Second operand has 28 states, 27 states have (on average 6.592592592592593) internal successors, (178), 27 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:55,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:55,306 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2021-11-07 07:32:55,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 07:32:55,306 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 6.592592592592593) internal successors, (178), 27 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-11-07 07:32:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:55,308 INFO L225 Difference]: With dead ends: 189 [2021-11-07 07:32:55,308 INFO L226 Difference]: Without dead ends: 188 [2021-11-07 07:32:55,308 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:32:55,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-07 07:32:55,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2021-11-07 07:32:55,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 185 states have (on average 1.0108108108108107) internal successors, (187), 186 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:55,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2021-11-07 07:32:55,314 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 178 [2021-11-07 07:32:55,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:55,315 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2021-11-07 07:32:55,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 6.592592592592593) internal successors, (178), 27 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2021-11-07 07:32:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-07 07:32:55,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:55,317 INFO L513 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 25, 25, 1, 1] [2021-11-07 07:32:55,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:55,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-11-07 07:32:55,530 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:55,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:55,530 INFO L85 PathProgramCache]: Analyzing trace with hash 579095325, now seen corresponding path program 25 times [2021-11-07 07:32:55,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:55,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616101632] [2021-11-07 07:32:55,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:55,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:55,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2225 backedges. 0 proven. 2225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:55,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:55,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616101632] [2021-11-07 07:32:55,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616101632] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:55,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125453478] [2021-11-07 07:32:55,904 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:32:55,904 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:55,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:55,906 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:55,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-07 07:32:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:57,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 07:32:57,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2225 backedges. 0 proven. 2225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:57,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2125453478] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:57,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:57,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-11-07 07:32:57,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382825627] [2021-11-07 07:32:57,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 07:32:57,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:57,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 07:32:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:32:57,783 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand has 28 states, 27 states have (on average 6.703703703703703) internal successors, (181), 27 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:57,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:57,840 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2021-11-07 07:32:57,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 07:32:57,840 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 6.703703703703703) internal successors, (181), 27 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2021-11-07 07:32:57,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:57,841 INFO L225 Difference]: With dead ends: 191 [2021-11-07 07:32:57,841 INFO L226 Difference]: Without dead ends: 190 [2021-11-07 07:32:57,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:32:57,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-07 07:32:57,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2021-11-07 07:32:57,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 188 states have (on average 1.0106382978723405) internal successors, (190), 189 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:57,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 190 transitions. [2021-11-07 07:32:57,846 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 190 transitions. Word has length 181 [2021-11-07 07:32:57,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:57,847 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 190 transitions. [2021-11-07 07:32:57,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 6.703703703703703) internal successors, (181), 27 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 190 transitions. [2021-11-07 07:32:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-07 07:32:57,848 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:57,848 INFO L513 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 26, 26, 1, 1] [2021-11-07 07:32:57,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-11-07 07:32:58,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:58,058 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:32:58,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:58,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1662449505, now seen corresponding path program 26 times [2021-11-07 07:32:58,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:58,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175652445] [2021-11-07 07:32:58,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:58,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 0 proven. 2327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:58,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:58,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175652445] [2021-11-07 07:32:58,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175652445] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:58,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908807693] [2021-11-07 07:32:58,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:32:58,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:58,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:58,412 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:58,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-07 07:32:59,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:32:59,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:59,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 07:32:59,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2327 backedges. 0 proven. 2327 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:00,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908807693] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:00,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:00,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-11-07 07:33:00,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626659328] [2021-11-07 07:33:00,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 07:33:00,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 07:33:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-11-07 07:33:00,275 INFO L87 Difference]: Start difference. First operand 190 states and 190 transitions. Second operand has 29 states, 28 states have (on average 6.607142857142857) internal successors, (185), 28 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:00,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:00,358 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2021-11-07 07:33:00,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 07:33:00,358 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 6.607142857142857) internal successors, (185), 28 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2021-11-07 07:33:00,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:00,360 INFO L225 Difference]: With dead ends: 196 [2021-11-07 07:33:00,360 INFO L226 Difference]: Without dead ends: 195 [2021-11-07 07:33:00,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-11-07 07:33:00,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-07 07:33:00,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-11-07 07:33:00,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 193 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:00,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-11-07 07:33:00,365 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 185 [2021-11-07 07:33:00,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:00,366 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-11-07 07:33:00,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 6.607142857142857) internal successors, (185), 28 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:00,366 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-11-07 07:33:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-11-07 07:33:00,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:00,366 INFO L513 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 26, 26, 26, 1, 1] [2021-11-07 07:33:00,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:00,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:00,567 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:00,567 INFO L85 PathProgramCache]: Analyzing trace with hash 765357037, now seen corresponding path program 26 times [2021-11-07 07:33:00,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:00,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483826760] [2021-11-07 07:33:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:00,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:00,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 0 proven. 2405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:00,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:00,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483826760] [2021-11-07 07:33:00,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483826760] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:00,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295793866] [2021-11-07 07:33:00,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:33:00,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:00,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:00,973 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:00,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-07 07:33:02,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:33:02,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:02,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 07:33:02,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:02,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2405 backedges. 0 proven. 2405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:02,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295793866] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:02,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:02,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-11-07 07:33:02,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003612982] [2021-11-07 07:33:02,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 07:33:02,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:02,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 07:33:02,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-11-07 07:33:02,912 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 29 states, 28 states have (on average 6.714285714285714) internal successors, (188), 28 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:02,969 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2021-11-07 07:33:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 07:33:02,969 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 6.714285714285714) internal successors, (188), 28 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 188 [2021-11-07 07:33:02,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:02,970 INFO L225 Difference]: With dead ends: 198 [2021-11-07 07:33:02,970 INFO L226 Difference]: Without dead ends: 197 [2021-11-07 07:33:02,970 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-11-07 07:33:02,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-11-07 07:33:02,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2021-11-07 07:33:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 195 states have (on average 1.0102564102564102) internal successors, (197), 196 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2021-11-07 07:33:02,975 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 188 [2021-11-07 07:33:02,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:02,975 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2021-11-07 07:33:02,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 6.714285714285714) internal successors, (188), 28 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2021-11-07 07:33:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-07 07:33:02,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:02,977 INFO L513 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 27, 27, 1, 1] [2021-11-07 07:33:03,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:03,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-07 07:33:03,202 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:03,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:03,202 INFO L85 PathProgramCache]: Analyzing trace with hash 529805361, now seen corresponding path program 27 times [2021-11-07 07:33:03,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:03,202 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159702038] [2021-11-07 07:33:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:03,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2511 backedges. 0 proven. 2511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:03,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:03,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159702038] [2021-11-07 07:33:03,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159702038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:03,590 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337743306] [2021-11-07 07:33:03,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:33:03,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:03,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:03,591 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:03,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-07 07:33:05,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-07 07:33:05,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:05,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 07:33:05,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2511 backedges. 0 proven. 2511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:05,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337743306] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:05,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:05,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-11-07 07:33:05,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697324328] [2021-11-07 07:33:05,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 07:33:05,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:05,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 07:33:05,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:33:05,673 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand has 30 states, 29 states have (on average 6.620689655172414) internal successors, (192), 29 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:05,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:05,759 INFO L93 Difference]: Finished difference Result 203 states and 203 transitions. [2021-11-07 07:33:05,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 07:33:05,760 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 6.620689655172414) internal successors, (192), 29 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2021-11-07 07:33:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:05,761 INFO L225 Difference]: With dead ends: 203 [2021-11-07 07:33:05,762 INFO L226 Difference]: Without dead ends: 202 [2021-11-07 07:33:05,762 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:33:05,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-11-07 07:33:05,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 201. [2021-11-07 07:33:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 199 states have (on average 1.0100502512562815) internal successors, (201), 200 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 201 transitions. [2021-11-07 07:33:05,799 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 201 transitions. Word has length 192 [2021-11-07 07:33:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:05,799 INFO L470 AbstractCegarLoop]: Abstraction has 201 states and 201 transitions. [2021-11-07 07:33:05,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 6.620689655172414) internal successors, (192), 29 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 201 transitions. [2021-11-07 07:33:05,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-07 07:33:05,800 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:05,801 INFO L513 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 27, 27, 1, 1] [2021-11-07 07:33:05,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:06,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-07 07:33:06,001 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:06,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:06,002 INFO L85 PathProgramCache]: Analyzing trace with hash -573259491, now seen corresponding path program 27 times [2021-11-07 07:33:06,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:06,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637262280] [2021-11-07 07:33:06,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:06,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:06,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:06,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:06,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637262280] [2021-11-07 07:33:06,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637262280] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:06,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205103676] [2021-11-07 07:33:06,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:33:06,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:06,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:06,399 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:06,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-07 07:33:07,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-07 07:33:07,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:07,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 07:33:07,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:08,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2592 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:08,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205103676] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:08,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:08,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-11-07 07:33:08,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878450473] [2021-11-07 07:33:08,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 07:33:08,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 07:33:08,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:33:08,556 INFO L87 Difference]: Start difference. First operand 201 states and 201 transitions. Second operand has 30 states, 29 states have (on average 6.724137931034483) internal successors, (195), 29 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:08,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:08,635 INFO L93 Difference]: Finished difference Result 205 states and 205 transitions. [2021-11-07 07:33:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 07:33:08,635 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 6.724137931034483) internal successors, (195), 29 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 195 [2021-11-07 07:33:08,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:08,637 INFO L225 Difference]: With dead ends: 205 [2021-11-07 07:33:08,637 INFO L226 Difference]: Without dead ends: 204 [2021-11-07 07:33:08,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:33:08,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-11-07 07:33:08,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-11-07 07:33:08,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 202 states have (on average 1.00990099009901) internal successors, (204), 203 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:08,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2021-11-07 07:33:08,643 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 195 [2021-11-07 07:33:08,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:08,643 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2021-11-07 07:33:08,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 6.724137931034483) internal successors, (195), 29 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:08,644 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2021-11-07 07:33:08,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-07 07:33:08,645 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:08,645 INFO L513 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 28, 28, 1, 1] [2021-11-07 07:33:08,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:08,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-07 07:33:08,854 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:08,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:08,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1966894433, now seen corresponding path program 28 times [2021-11-07 07:33:08,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:08,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124083022] [2021-11-07 07:33:08,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:08,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:09,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2702 backedges. 0 proven. 2702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:09,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:09,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124083022] [2021-11-07 07:33:09,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124083022] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:09,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497875056] [2021-11-07 07:33:09,270 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:33:09,270 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:09,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:09,280 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:09,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-07 07:33:10,976 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:33:10,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:10,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-07 07:33:10,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2702 backedges. 0 proven. 2702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:11,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497875056] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:11,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:11,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-11-07 07:33:11,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131281651] [2021-11-07 07:33:11,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-07 07:33:11,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:11,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-07 07:33:11,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-11-07 07:33:11,494 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand has 31 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:11,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:11,591 INFO L93 Difference]: Finished difference Result 210 states and 210 transitions. [2021-11-07 07:33:11,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 07:33:11,591 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2021-11-07 07:33:11,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:11,593 INFO L225 Difference]: With dead ends: 210 [2021-11-07 07:33:11,593 INFO L226 Difference]: Without dead ends: 209 [2021-11-07 07:33:11,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-11-07 07:33:11,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-07 07:33:11,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 208. [2021-11-07 07:33:11,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 206 states have (on average 1.0097087378640777) internal successors, (208), 207 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:11,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 208 transitions. [2021-11-07 07:33:11,599 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 208 transitions. Word has length 199 [2021-11-07 07:33:11,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:11,599 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 208 transitions. [2021-11-07 07:33:11,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 6.633333333333334) internal successors, (199), 30 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:11,600 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 208 transitions. [2021-11-07 07:33:11,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-07 07:33:11,601 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:11,601 INFO L513 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 28, 28, 1, 1] [2021-11-07 07:33:11,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:11,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:11,826 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:11,826 INFO L85 PathProgramCache]: Analyzing trace with hash -486722067, now seen corresponding path program 28 times [2021-11-07 07:33:11,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:11,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424590885] [2021-11-07 07:33:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:11,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:11,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:12,344 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 0 proven. 2786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:12,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:12,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424590885] [2021-11-07 07:33:12,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424590885] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:12,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273846420] [2021-11-07 07:33:12,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:33:12,345 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:12,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:12,346 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:12,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-07 07:33:14,060 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:33:14,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:14,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-07 07:33:14,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2786 backedges. 0 proven. 2786 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:14,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273846420] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:14,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:14,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-11-07 07:33:14,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552726656] [2021-11-07 07:33:14,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-07 07:33:14,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:14,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-07 07:33:14,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-11-07 07:33:14,537 INFO L87 Difference]: Start difference. First operand 208 states and 208 transitions. Second operand has 31 states, 30 states have (on average 6.733333333333333) internal successors, (202), 30 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:14,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:14,620 INFO L93 Difference]: Finished difference Result 212 states and 212 transitions. [2021-11-07 07:33:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 07:33:14,621 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 6.733333333333333) internal successors, (202), 30 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 202 [2021-11-07 07:33:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:14,622 INFO L225 Difference]: With dead ends: 212 [2021-11-07 07:33:14,622 INFO L226 Difference]: Without dead ends: 211 [2021-11-07 07:33:14,622 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-11-07 07:33:14,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-11-07 07:33:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2021-11-07 07:33:14,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 209 states have (on average 1.0095693779904307) internal successors, (211), 210 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:14,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 211 transitions. [2021-11-07 07:33:14,627 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 211 transitions. Word has length 202 [2021-11-07 07:33:14,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:14,628 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 211 transitions. [2021-11-07 07:33:14,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 6.733333333333333) internal successors, (202), 30 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:14,628 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 211 transitions. [2021-11-07 07:33:14,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-11-07 07:33:14,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:14,630 INFO L513 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 29, 29, 1, 1] [2021-11-07 07:33:14,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:14,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-11-07 07:33:14,848 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:14,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:14,848 INFO L85 PathProgramCache]: Analyzing trace with hash 343800369, now seen corresponding path program 29 times [2021-11-07 07:33:14,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:14,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324687665] [2021-11-07 07:33:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:14,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 0 proven. 2900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:15,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:15,342 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324687665] [2021-11-07 07:33:15,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324687665] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:15,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672534008] [2021-11-07 07:33:15,343 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:33:15,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:15,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:15,350 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:15,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-07 07:33:17,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-07 07:33:17,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:17,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 07:33:17,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2900 backedges. 0 proven. 2900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:17,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672534008] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:17,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:17,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-11-07 07:33:17,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951565044] [2021-11-07 07:33:17,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 07:33:17,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:17,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 07:33:17,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-11-07 07:33:17,743 INFO L87 Difference]: Start difference. First operand 211 states and 211 transitions. Second operand has 32 states, 31 states have (on average 6.645161290322581) internal successors, (206), 31 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:17,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:17,803 INFO L93 Difference]: Finished difference Result 217 states and 217 transitions. [2021-11-07 07:33:17,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 07:33:17,804 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 6.645161290322581) internal successors, (206), 31 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 206 [2021-11-07 07:33:17,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:17,805 INFO L225 Difference]: With dead ends: 217 [2021-11-07 07:33:17,805 INFO L226 Difference]: Without dead ends: 216 [2021-11-07 07:33:17,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-11-07 07:33:17,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-07 07:33:17,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 215. [2021-11-07 07:33:17,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 213 states have (on average 1.0093896713615023) internal successors, (215), 214 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:17,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 215 transitions. [2021-11-07 07:33:17,811 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 215 transitions. Word has length 206 [2021-11-07 07:33:17,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:17,811 INFO L470 AbstractCegarLoop]: Abstraction has 215 states and 215 transitions. [2021-11-07 07:33:17,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 6.645161290322581) internal successors, (206), 31 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:17,812 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 215 transitions. [2021-11-07 07:33:17,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-11-07 07:33:17,813 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:17,813 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 29, 29, 29, 1, 1] [2021-11-07 07:33:17,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:18,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:18,038 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:18,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:18,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1340164323, now seen corresponding path program 29 times [2021-11-07 07:33:18,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:18,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117677870] [2021-11-07 07:33:18,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:18,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:18,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2987 backedges. 0 proven. 2987 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:18,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:18,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117677870] [2021-11-07 07:33:18,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117677870] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:18,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709066337] [2021-11-07 07:33:18,466 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:33:18,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:18,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:18,467 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:18,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-07 07:33:20,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-07 07:33:20,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:20,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 07:33:20,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2987 backedges. 0 proven. 2987 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:20,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709066337] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:20,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:20,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-11-07 07:33:20,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582022592] [2021-11-07 07:33:20,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 07:33:20,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 07:33:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-11-07 07:33:20,828 INFO L87 Difference]: Start difference. First operand 215 states and 215 transitions. Second operand has 32 states, 31 states have (on average 6.741935483870968) internal successors, (209), 31 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:20,907 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2021-11-07 07:33:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 07:33:20,909 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 6.741935483870968) internal successors, (209), 31 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 209 [2021-11-07 07:33:20,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:20,910 INFO L225 Difference]: With dead ends: 219 [2021-11-07 07:33:20,910 INFO L226 Difference]: Without dead ends: 218 [2021-11-07 07:33:20,911 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-11-07 07:33:20,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-07 07:33:20,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-11-07 07:33:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 217 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2021-11-07 07:33:20,919 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 209 [2021-11-07 07:33:20,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:20,919 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2021-11-07 07:33:20,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 6.741935483870968) internal successors, (209), 31 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:20,920 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2021-11-07 07:33:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-11-07 07:33:20,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:20,921 INFO L513 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 30, 30, 1, 1] [2021-11-07 07:33:20,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:21,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:21,134 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:21,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:21,134 INFO L85 PathProgramCache]: Analyzing trace with hash -2053414047, now seen corresponding path program 30 times [2021-11-07 07:33:21,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:21,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274681474] [2021-11-07 07:33:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:21,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:21,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:21,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274681474] [2021-11-07 07:33:21,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274681474] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:21,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652254833] [2021-11-07 07:33:21,689 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:33:21,689 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:21,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:21,690 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:21,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-07 07:33:23,635 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-07 07:33:23,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:23,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 07:33:23,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3105 backedges. 0 proven. 3105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:24,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652254833] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:24,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:24,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-11-07 07:33:24,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925388119] [2021-11-07 07:33:24,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-07 07:33:24,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:24,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-07 07:33:24,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 07:33:24,183 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 33 states, 32 states have (on average 6.65625) internal successors, (213), 32 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:24,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:24,268 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2021-11-07 07:33:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 07:33:24,268 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 6.65625) internal successors, (213), 32 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-11-07 07:33:24,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:24,270 INFO L225 Difference]: With dead ends: 224 [2021-11-07 07:33:24,270 INFO L226 Difference]: Without dead ends: 223 [2021-11-07 07:33:24,270 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 07:33:24,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-07 07:33:24,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-11-07 07:33:24,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 220 states have (on average 1.009090909090909) internal successors, (222), 221 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:24,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2021-11-07 07:33:24,276 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 213 [2021-11-07 07:33:24,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:24,277 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2021-11-07 07:33:24,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 6.65625) internal successors, (213), 32 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:24,277 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2021-11-07 07:33:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-11-07 07:33:24,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:24,279 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 30, 30, 30, 1, 1] [2021-11-07 07:33:24,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:24,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:24,492 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:24,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:24,492 INFO L85 PathProgramCache]: Analyzing trace with hash -38633491, now seen corresponding path program 30 times [2021-11-07 07:33:24,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:24,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182610969] [2021-11-07 07:33:24,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:24,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3195 backedges. 0 proven. 3195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:24,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:24,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182610969] [2021-11-07 07:33:24,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182610969] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:24,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801756487] [2021-11-07 07:33:24,965 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:33:24,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:24,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:24,967 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:24,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-07 07:33:26,968 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-07 07:33:26,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:26,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 407 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 07:33:26,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:27,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3195 backedges. 0 proven. 3195 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:27,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801756487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:27,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:27,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-11-07 07:33:27,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223238480] [2021-11-07 07:33:27,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-07 07:33:27,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-07 07:33:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 07:33:27,482 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand has 33 states, 32 states have (on average 6.75) internal successors, (216), 32 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:27,552 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2021-11-07 07:33:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 07:33:27,553 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 6.75) internal successors, (216), 32 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2021-11-07 07:33:27,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:27,554 INFO L225 Difference]: With dead ends: 226 [2021-11-07 07:33:27,554 INFO L226 Difference]: Without dead ends: 225 [2021-11-07 07:33:27,554 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 07:33:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-07 07:33:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2021-11-07 07:33:27,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 223 states have (on average 1.0089686098654709) internal successors, (225), 224 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 225 transitions. [2021-11-07 07:33:27,558 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 225 transitions. Word has length 216 [2021-11-07 07:33:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:27,558 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 225 transitions. [2021-11-07 07:33:27,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 6.75) internal successors, (216), 32 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:27,558 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 225 transitions. [2021-11-07 07:33:27,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-07 07:33:27,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:27,559 INFO L513 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 31, 31, 1, 1] [2021-11-07 07:33:27,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2021-11-07 07:33:27,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:27,762 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:27,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:27,762 INFO L85 PathProgramCache]: Analyzing trace with hash -545373135, now seen corresponding path program 31 times [2021-11-07 07:33:27,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:27,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692732009] [2021-11-07 07:33:27,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:27,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 0 proven. 3317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:28,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:28,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692732009] [2021-11-07 07:33:28,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692732009] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:28,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355038721] [2021-11-07 07:33:28,259 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:33:28,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:28,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:28,262 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:28,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-07 07:33:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:30,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 07:33:30,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:30,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3317 backedges. 0 proven. 3317 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:30,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355038721] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:30,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:30,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-11-07 07:33:30,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387757489] [2021-11-07 07:33:30,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 07:33:30,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:30,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 07:33:30,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:33:30,823 INFO L87 Difference]: Start difference. First operand 225 states and 225 transitions. Second operand has 34 states, 33 states have (on average 6.666666666666667) internal successors, (220), 33 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:30,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:30,896 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2021-11-07 07:33:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 07:33:30,896 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 6.666666666666667) internal successors, (220), 33 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 220 [2021-11-07 07:33:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:30,897 INFO L225 Difference]: With dead ends: 231 [2021-11-07 07:33:30,897 INFO L226 Difference]: Without dead ends: 230 [2021-11-07 07:33:30,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:33:30,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-07 07:33:30,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2021-11-07 07:33:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 227 states have (on average 1.0088105726872247) internal successors, (229), 228 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2021-11-07 07:33:30,904 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 220 [2021-11-07 07:33:30,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:30,905 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2021-11-07 07:33:30,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 6.666666666666667) internal successors, (220), 33 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2021-11-07 07:33:30,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-11-07 07:33:30,907 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:30,907 INFO L513 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 31, 31, 31, 1, 1] [2021-11-07 07:33:30,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:31,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-11-07 07:33:31,122 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:31,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash 650259741, now seen corresponding path program 31 times [2021-11-07 07:33:31,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:31,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089048178] [2021-11-07 07:33:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:31,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3410 backedges. 0 proven. 3410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:31,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:31,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089048178] [2021-11-07 07:33:31,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089048178] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:31,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008340111] [2021-11-07 07:33:31,620 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:33:31,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:31,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:31,621 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:31,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-07 07:33:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:33,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 07:33:33,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:34,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3410 backedges. 0 proven. 3410 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:34,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008340111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:34,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:34,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-11-07 07:33:34,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964356186] [2021-11-07 07:33:34,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 07:33:34,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:34,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 07:33:34,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:33:34,279 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand has 34 states, 33 states have (on average 6.757575757575758) internal successors, (223), 33 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:34,345 INFO L93 Difference]: Finished difference Result 233 states and 233 transitions. [2021-11-07 07:33:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 07:33:34,346 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 6.757575757575758) internal successors, (223), 33 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 223 [2021-11-07 07:33:34,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:34,347 INFO L225 Difference]: With dead ends: 233 [2021-11-07 07:33:34,347 INFO L226 Difference]: Without dead ends: 232 [2021-11-07 07:33:34,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:33:34,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-07 07:33:34,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-11-07 07:33:34,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 230 states have (on average 1.008695652173913) internal successors, (232), 231 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:34,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2021-11-07 07:33:34,352 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 223 [2021-11-07 07:33:34,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:34,352 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2021-11-07 07:33:34,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 6.757575757575758) internal successors, (223), 33 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:34,352 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2021-11-07 07:33:34,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-07 07:33:34,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:34,354 INFO L513 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 32, 32, 1, 1] [2021-11-07 07:33:34,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-11-07 07:33:34,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-11-07 07:33:34,562 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:34,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:34,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1905514849, now seen corresponding path program 32 times [2021-11-07 07:33:34,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:34,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333510255] [2021-11-07 07:33:34,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:34,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:34,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:35,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3536 backedges. 0 proven. 3536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:35,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:35,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333510255] [2021-11-07 07:33:35,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333510255] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:35,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741017194] [2021-11-07 07:33:35,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:33:35,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:35,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:35,133 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:35,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-07 07:33:37,274 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:33:37,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:37,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 07:33:37,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:37,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3536 backedges. 0 proven. 3536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:37,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741017194] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:37,824 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:37,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-11-07 07:33:37,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15654871] [2021-11-07 07:33:37,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 07:33:37,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:37,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 07:33:37,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 07:33:37,825 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand has 35 states, 34 states have (on average 6.676470588235294) internal successors, (227), 34 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:37,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:37,893 INFO L93 Difference]: Finished difference Result 238 states and 238 transitions. [2021-11-07 07:33:37,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-07 07:33:37,893 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 6.676470588235294) internal successors, (227), 34 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2021-11-07 07:33:37,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:37,894 INFO L225 Difference]: With dead ends: 238 [2021-11-07 07:33:37,894 INFO L226 Difference]: Without dead ends: 237 [2021-11-07 07:33:37,894 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 07:33:37,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-11-07 07:33:37,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 236. [2021-11-07 07:33:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 234 states have (on average 1.0085470085470085) internal successors, (236), 235 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 236 transitions. [2021-11-07 07:33:37,912 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 236 transitions. Word has length 227 [2021-11-07 07:33:37,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:37,913 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 236 transitions. [2021-11-07 07:33:37,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 6.676470588235294) internal successors, (227), 34 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:37,913 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 236 transitions. [2021-11-07 07:33:37,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-07 07:33:37,914 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:37,915 INFO L513 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 32, 32, 32, 1, 1] [2021-11-07 07:33:37,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-11-07 07:33:38,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-07 07:33:38,138 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:38,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash 610159085, now seen corresponding path program 32 times [2021-11-07 07:33:38,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:38,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976465173] [2021-11-07 07:33:38,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:38,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:38,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:38,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3632 backedges. 0 proven. 3632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:38,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:38,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976465173] [2021-11-07 07:33:38,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976465173] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:38,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867801527] [2021-11-07 07:33:38,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:33:38,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:38,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:38,673 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:38,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-07 07:33:40,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:33:40,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:40,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 07:33:40,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:41,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3632 backedges. 0 proven. 3632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:41,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867801527] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:41,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:41,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-11-07 07:33:41,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469789535] [2021-11-07 07:33:41,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 07:33:41,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 07:33:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 07:33:41,482 INFO L87 Difference]: Start difference. First operand 236 states and 236 transitions. Second operand has 35 states, 34 states have (on average 6.764705882352941) internal successors, (230), 34 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:41,554 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2021-11-07 07:33:41,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-07 07:33:41,555 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 6.764705882352941) internal successors, (230), 34 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 230 [2021-11-07 07:33:41,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:41,556 INFO L225 Difference]: With dead ends: 240 [2021-11-07 07:33:41,556 INFO L226 Difference]: Without dead ends: 239 [2021-11-07 07:33:41,556 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 07:33:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-07 07:33:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-11-07 07:33:41,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2021-11-07 07:33:41,563 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 230 [2021-11-07 07:33:41,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:41,564 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2021-11-07 07:33:41,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 6.764705882352941) internal successors, (230), 34 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:41,564 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2021-11-07 07:33:41,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-11-07 07:33:41,566 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:41,566 INFO L513 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 33, 33, 1, 1] [2021-11-07 07:33:41,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:41,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-11-07 07:33:41,770 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:41,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:41,770 INFO L85 PathProgramCache]: Analyzing trace with hash -684388815, now seen corresponding path program 33 times [2021-11-07 07:33:41,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:41,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054156846] [2021-11-07 07:33:41,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:41,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3762 backedges. 0 proven. 3762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:42,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:42,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054156846] [2021-11-07 07:33:42,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054156846] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:42,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326110314] [2021-11-07 07:33:42,297 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:33:42,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:42,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:42,298 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:42,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-07 07:33:44,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-07 07:33:44,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:44,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-07 07:33:44,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:45,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3762 backedges. 0 proven. 3762 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:45,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326110314] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:45,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:45,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-11-07 07:33:45,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287339246] [2021-11-07 07:33:45,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 07:33:45,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:45,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 07:33:45,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 07:33:45,173 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand has 36 states, 35 states have (on average 6.685714285714286) internal successors, (234), 35 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:45,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:45,241 INFO L93 Difference]: Finished difference Result 245 states and 245 transitions. [2021-11-07 07:33:45,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 07:33:45,242 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 6.685714285714286) internal successors, (234), 35 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2021-11-07 07:33:45,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:45,243 INFO L225 Difference]: With dead ends: 245 [2021-11-07 07:33:45,243 INFO L226 Difference]: Without dead ends: 244 [2021-11-07 07:33:45,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 07:33:45,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-11-07 07:33:45,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 243. [2021-11-07 07:33:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 241 states have (on average 1.008298755186722) internal successors, (243), 242 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:45,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 243 transitions. [2021-11-07 07:33:45,248 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 243 transitions. Word has length 234 [2021-11-07 07:33:45,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:45,249 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 243 transitions. [2021-11-07 07:33:45,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 6.685714285714286) internal successors, (234), 35 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:45,249 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 243 transitions. [2021-11-07 07:33:45,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-07 07:33:45,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:45,251 INFO L513 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 33, 33, 33, 1, 1] [2021-11-07 07:33:45,289 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-11-07 07:33:45,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable70 [2021-11-07 07:33:45,474 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:45,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:45,474 INFO L85 PathProgramCache]: Analyzing trace with hash -417389795, now seen corresponding path program 33 times [2021-11-07 07:33:45,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:45,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183108730] [2021-11-07 07:33:45,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:45,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3861 backedges. 0 proven. 3861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:45,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:45,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183108730] [2021-11-07 07:33:45,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183108730] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:45,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848431490] [2021-11-07 07:33:45,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:33:45,979 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:45,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:45,980 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:45,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-07 07:33:48,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-07 07:33:48,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:48,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-07 07:33:48,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:48,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3861 backedges. 0 proven. 3861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:48,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848431490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:48,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:48,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-11-07 07:33:48,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784664862] [2021-11-07 07:33:48,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 07:33:48,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:48,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 07:33:48,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 07:33:48,925 INFO L87 Difference]: Start difference. First operand 243 states and 243 transitions. Second operand has 36 states, 35 states have (on average 6.771428571428571) internal successors, (237), 35 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:48,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:48,994 INFO L93 Difference]: Finished difference Result 247 states and 247 transitions. [2021-11-07 07:33:48,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 07:33:48,994 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 6.771428571428571) internal successors, (237), 35 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-11-07 07:33:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:48,995 INFO L225 Difference]: With dead ends: 247 [2021-11-07 07:33:48,995 INFO L226 Difference]: Without dead ends: 246 [2021-11-07 07:33:48,996 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 07:33:48,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-11-07 07:33:49,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2021-11-07 07:33:49,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 244 states have (on average 1.0081967213114753) internal successors, (246), 245 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 246 transitions. [2021-11-07 07:33:49,001 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 246 transitions. Word has length 237 [2021-11-07 07:33:49,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:49,002 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 246 transitions. [2021-11-07 07:33:49,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 6.771428571428571) internal successors, (237), 35 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:49,002 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 246 transitions. [2021-11-07 07:33:49,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2021-11-07 07:33:49,003 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:49,004 INFO L513 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 34, 34, 1, 1] [2021-11-07 07:33:49,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:49,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:49,226 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:49,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:49,226 INFO L85 PathProgramCache]: Analyzing trace with hash 780521313, now seen corresponding path program 34 times [2021-11-07 07:33:49,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:49,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11962259] [2021-11-07 07:33:49,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:49,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:49,778 INFO L134 CoverageAnalysis]: Checked inductivity of 3995 backedges. 0 proven. 3995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:49,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:49,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11962259] [2021-11-07 07:33:49,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11962259] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:49,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412237412] [2021-11-07 07:33:49,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:33:49,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:49,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:49,780 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:49,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-11-07 07:33:52,210 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:33:52,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:52,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-07 07:33:52,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3995 backedges. 0 proven. 3995 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:52,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412237412] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:52,788 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:52,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-11-07 07:33:52,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155910834] [2021-11-07 07:33:52,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-07 07:33:52,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:52,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-07 07:33:52,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 07:33:52,789 INFO L87 Difference]: Start difference. First operand 246 states and 246 transitions. Second operand has 37 states, 36 states have (on average 6.694444444444445) internal successors, (241), 36 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:52,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:52,915 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2021-11-07 07:33:52,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 07:33:52,915 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 6.694444444444445) internal successors, (241), 36 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 241 [2021-11-07 07:33:52,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:52,917 INFO L225 Difference]: With dead ends: 252 [2021-11-07 07:33:52,917 INFO L226 Difference]: Without dead ends: 251 [2021-11-07 07:33:52,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 07:33:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-07 07:33:52,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2021-11-07 07:33:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 248 states have (on average 1.0080645161290323) internal successors, (250), 249 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:52,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 250 transitions. [2021-11-07 07:33:52,925 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 250 transitions. Word has length 241 [2021-11-07 07:33:52,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:52,926 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 250 transitions. [2021-11-07 07:33:52,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 6.694444444444445) internal successors, (241), 36 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:52,926 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 250 transitions. [2021-11-07 07:33:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-07 07:33:52,928 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:52,928 INFO L513 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 34, 34, 34, 1, 1] [2021-11-07 07:33:52,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:53,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:53,150 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:53,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:53,150 INFO L85 PathProgramCache]: Analyzing trace with hash -442461203, now seen corresponding path program 34 times [2021-11-07 07:33:53,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:53,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375987364] [2021-11-07 07:33:53,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:53,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 0 proven. 4097 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:53,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:53,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375987364] [2021-11-07 07:33:53,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375987364] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:53,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608023598] [2021-11-07 07:33:53,870 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:33:53,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:53,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:53,871 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:53,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-11-07 07:33:56,530 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:33:56,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:33:56,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-07 07:33:56,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:33:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 4097 backedges. 0 proven. 4097 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:57,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608023598] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:57,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:33:57,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-11-07 07:33:57,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122228381] [2021-11-07 07:33:57,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-07 07:33:57,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:33:57,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-07 07:33:57,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 07:33:57,092 INFO L87 Difference]: Start difference. First operand 250 states and 250 transitions. Second operand has 37 states, 36 states have (on average 6.777777777777778) internal successors, (244), 36 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:33:57,172 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2021-11-07 07:33:57,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 07:33:57,173 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 6.777777777777778) internal successors, (244), 36 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2021-11-07 07:33:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:33:57,174 INFO L225 Difference]: With dead ends: 254 [2021-11-07 07:33:57,174 INFO L226 Difference]: Without dead ends: 253 [2021-11-07 07:33:57,174 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 07:33:57,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-07 07:33:57,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2021-11-07 07:33:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 251 states have (on average 1.0079681274900398) internal successors, (253), 252 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 253 transitions. [2021-11-07 07:33:57,179 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 253 transitions. Word has length 244 [2021-11-07 07:33:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:33:57,179 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 253 transitions. [2021-11-07 07:33:57,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 6.777777777777778) internal successors, (244), 36 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:33:57,179 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 253 transitions. [2021-11-07 07:33:57,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2021-11-07 07:33:57,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:33:57,181 INFO L513 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 35, 35, 1, 1] [2021-11-07 07:33:57,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-11-07 07:33:57,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:57,402 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:33:57,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:33:57,403 INFO L85 PathProgramCache]: Analyzing trace with hash 977426481, now seen corresponding path program 35 times [2021-11-07 07:33:57,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:33:57,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513965878] [2021-11-07 07:33:57,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:33:57,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:33:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:33:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 4235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:33:57,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:33:57,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513965878] [2021-11-07 07:33:57,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513965878] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:33:57,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895667238] [2021-11-07 07:33:57,967 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:33:57,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:33:57,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:33:57,967 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:33:57,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-07 07:34:00,515 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-07 07:34:00,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:34:00,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-07 07:34:00,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 4235 backedges. 0 proven. 4235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:01,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895667238] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:01,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:01,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-11-07 07:34:01,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666753273] [2021-11-07 07:34:01,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-07 07:34:01,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:01,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-07 07:34:01,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:34:01,125 INFO L87 Difference]: Start difference. First operand 253 states and 253 transitions. Second operand has 38 states, 37 states have (on average 6.702702702702703) internal successors, (248), 37 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:01,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:01,195 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2021-11-07 07:34:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 07:34:01,196 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 6.702702702702703) internal successors, (248), 37 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 248 [2021-11-07 07:34:01,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:01,197 INFO L225 Difference]: With dead ends: 259 [2021-11-07 07:34:01,197 INFO L226 Difference]: Without dead ends: 258 [2021-11-07 07:34:01,197 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:34:01,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-07 07:34:01,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2021-11-07 07:34:01,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 255 states have (on average 1.007843137254902) internal successors, (257), 256 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2021-11-07 07:34:01,203 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 248 [2021-11-07 07:34:01,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:01,203 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2021-11-07 07:34:01,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 6.702702702702703) internal successors, (248), 37 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:01,204 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2021-11-07 07:34:01,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-07 07:34:01,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:01,205 INFO L513 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 35, 35, 35, 1, 1] [2021-11-07 07:34:01,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2021-11-07 07:34:01,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:01,434 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:01,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:01,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1365927651, now seen corresponding path program 35 times [2021-11-07 07:34:01,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:01,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769139733] [2021-11-07 07:34:01,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:01,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:01,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:02,020 INFO L134 CoverageAnalysis]: Checked inductivity of 4340 backedges. 0 proven. 4340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:02,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:02,020 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769139733] [2021-11-07 07:34:02,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769139733] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:02,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091013449] [2021-11-07 07:34:02,021 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:34:02,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:02,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:02,021 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:02,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-11-07 07:34:04,647 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-07 07:34:04,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:34:04,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-07 07:34:04,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:05,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4340 backedges. 0 proven. 4340 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:05,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091013449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:05,215 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:05,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-11-07 07:34:05,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522782157] [2021-11-07 07:34:05,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-07 07:34:05,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:05,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-07 07:34:05,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:34:05,219 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand has 38 states, 37 states have (on average 6.783783783783784) internal successors, (251), 37 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:05,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:05,295 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2021-11-07 07:34:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 07:34:05,296 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 6.783783783783784) internal successors, (251), 37 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 251 [2021-11-07 07:34:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:05,297 INFO L225 Difference]: With dead ends: 261 [2021-11-07 07:34:05,297 INFO L226 Difference]: Without dead ends: 260 [2021-11-07 07:34:05,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:34:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-07 07:34:05,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2021-11-07 07:34:05,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 258 states have (on average 1.0077519379844961) internal successors, (260), 259 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:05,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 260 transitions. [2021-11-07 07:34:05,303 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 260 transitions. Word has length 251 [2021-11-07 07:34:05,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:05,304 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 260 transitions. [2021-11-07 07:34:05,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 6.783783783783784) internal successors, (251), 37 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:05,304 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 260 transitions. [2021-11-07 07:34:05,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-07 07:34:05,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:05,306 INFO L513 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 36, 36, 1, 1] [2021-11-07 07:34:05,349 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-11-07 07:34:05,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-11-07 07:34:05,522 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:05,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:05,522 INFO L85 PathProgramCache]: Analyzing trace with hash -909032095, now seen corresponding path program 36 times [2021-11-07 07:34:05,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:05,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136776569] [2021-11-07 07:34:05,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:05,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4482 backedges. 0 proven. 4482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:06,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:06,179 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136776569] [2021-11-07 07:34:06,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136776569] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:06,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679631852] [2021-11-07 07:34:06,180 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:34:06,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:06,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:06,180 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:06,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-11-07 07:34:08,863 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-07 07:34:08,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:34:08,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-07 07:34:08,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:09,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4482 backedges. 0 proven. 4482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:09,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679631852] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:09,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:09,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-11-07 07:34:09,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879522005] [2021-11-07 07:34:09,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-07 07:34:09,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:09,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-07 07:34:09,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 07:34:09,436 INFO L87 Difference]: Start difference. First operand 260 states and 260 transitions. Second operand has 39 states, 38 states have (on average 6.7105263157894735) internal successors, (255), 38 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:09,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:09,512 INFO L93 Difference]: Finished difference Result 266 states and 266 transitions. [2021-11-07 07:34:09,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 07:34:09,512 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 6.7105263157894735) internal successors, (255), 38 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2021-11-07 07:34:09,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:09,513 INFO L225 Difference]: With dead ends: 266 [2021-11-07 07:34:09,513 INFO L226 Difference]: Without dead ends: 265 [2021-11-07 07:34:09,514 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 07:34:09,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-07 07:34:09,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 264. [2021-11-07 07:34:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 262 states have (on average 1.0076335877862594) internal successors, (264), 263 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:09,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2021-11-07 07:34:09,517 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 255 [2021-11-07 07:34:09,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:09,518 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2021-11-07 07:34:09,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 6.7105263157894735) internal successors, (255), 38 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:09,518 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2021-11-07 07:34:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-11-07 07:34:09,519 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:09,519 INFO L513 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 36, 36, 36, 1, 1] [2021-11-07 07:34:09,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-11-07 07:34:09,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-11-07 07:34:09,722 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:09,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:09,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1206297107, now seen corresponding path program 36 times [2021-11-07 07:34:09,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:09,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718731701] [2021-11-07 07:34:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:09,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:10,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4590 backedges. 0 proven. 4590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:10,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:10,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718731701] [2021-11-07 07:34:10,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718731701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:10,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090409946] [2021-11-07 07:34:10,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:34:10,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:10,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:10,394 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:10,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-11-07 07:34:13,215 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-07 07:34:13,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:34:13,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-07 07:34:13,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4590 backedges. 0 proven. 4590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:13,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090409946] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:13,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:13,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-11-07 07:34:13,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466043995] [2021-11-07 07:34:13,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-07 07:34:13,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:13,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-07 07:34:13,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 07:34:13,844 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand has 39 states, 38 states have (on average 6.7894736842105265) internal successors, (258), 38 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:13,925 INFO L93 Difference]: Finished difference Result 268 states and 268 transitions. [2021-11-07 07:34:13,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 07:34:13,926 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 6.7894736842105265) internal successors, (258), 38 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 258 [2021-11-07 07:34:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:13,927 INFO L225 Difference]: With dead ends: 268 [2021-11-07 07:34:13,927 INFO L226 Difference]: Without dead ends: 267 [2021-11-07 07:34:13,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 07:34:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-07 07:34:13,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2021-11-07 07:34:13,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 265 states have (on average 1.0075471698113208) internal successors, (267), 266 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2021-11-07 07:34:13,934 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 258 [2021-11-07 07:34:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:13,935 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2021-11-07 07:34:13,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 6.7894736842105265) internal successors, (258), 38 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:13,935 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2021-11-07 07:34:13,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-07 07:34:13,937 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:13,937 INFO L513 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 37, 37, 1, 1] [2021-11-07 07:34:13,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-11-07 07:34:14,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-11-07 07:34:14,154 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:14,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:14,154 INFO L85 PathProgramCache]: Analyzing trace with hash 793125425, now seen corresponding path program 37 times [2021-11-07 07:34:14,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:14,155 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789809502] [2021-11-07 07:34:14,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:14,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:14,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4736 backedges. 0 proven. 4736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:14,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:14,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789809502] [2021-11-07 07:34:14,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789809502] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:14,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1503060957] [2021-11-07 07:34:14,748 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:34:14,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:14,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:14,749 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:14,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-11-07 07:34:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:17,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-07 07:34:17,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:18,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4736 backedges. 0 proven. 4736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:18,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1503060957] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:18,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:18,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-11-07 07:34:18,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498190621] [2021-11-07 07:34:18,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-07 07:34:18,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:18,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-07 07:34:18,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 07:34:18,266 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand has 40 states, 39 states have (on average 6.717948717948718) internal successors, (262), 39 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:18,365 INFO L93 Difference]: Finished difference Result 273 states and 273 transitions. [2021-11-07 07:34:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-07 07:34:18,365 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 6.717948717948718) internal successors, (262), 39 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 262 [2021-11-07 07:34:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:18,367 INFO L225 Difference]: With dead ends: 273 [2021-11-07 07:34:18,367 INFO L226 Difference]: Without dead ends: 272 [2021-11-07 07:34:18,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 07:34:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-07 07:34:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2021-11-07 07:34:18,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 269 states have (on average 1.0074349442379182) internal successors, (271), 270 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:18,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 271 transitions. [2021-11-07 07:34:18,374 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 271 transitions. Word has length 262 [2021-11-07 07:34:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:18,374 INFO L470 AbstractCegarLoop]: Abstraction has 271 states and 271 transitions. [2021-11-07 07:34:18,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 6.717948717948718) internal successors, (262), 39 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 271 transitions. [2021-11-07 07:34:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-07 07:34:18,376 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:18,376 INFO L513 BasicCegarLoop]: trace histogram [38, 38, 38, 38, 37, 37, 37, 1, 1] [2021-11-07 07:34:18,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2021-11-07 07:34:18,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-11-07 07:34:18,590 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:18,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:18,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1384484637, now seen corresponding path program 37 times [2021-11-07 07:34:18,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:18,591 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19116068] [2021-11-07 07:34:18,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:18,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4847 backedges. 0 proven. 4847 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:19,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:19,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19116068] [2021-11-07 07:34:19,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19116068] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:19,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467419577] [2021-11-07 07:34:19,259 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:34:19,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:19,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:19,260 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:19,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-11-07 07:34:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:22,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-07 07:34:22,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:22,795 INFO L134 CoverageAnalysis]: Checked inductivity of 4847 backedges. 0 proven. 4847 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:22,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467419577] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:22,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:22,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-11-07 07:34:22,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508632282] [2021-11-07 07:34:22,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-07 07:34:22,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:22,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-07 07:34:22,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 07:34:22,797 INFO L87 Difference]: Start difference. First operand 271 states and 271 transitions. Second operand has 40 states, 39 states have (on average 6.794871794871795) internal successors, (265), 39 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:22,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:22,875 INFO L93 Difference]: Finished difference Result 275 states and 275 transitions. [2021-11-07 07:34:22,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-07 07:34:22,875 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 6.794871794871795) internal successors, (265), 39 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 265 [2021-11-07 07:34:22,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:22,876 INFO L225 Difference]: With dead ends: 275 [2021-11-07 07:34:22,876 INFO L226 Difference]: Without dead ends: 274 [2021-11-07 07:34:22,876 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 07:34:22,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-11-07 07:34:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2021-11-07 07:34:22,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 272 states have (on average 1.0073529411764706) internal successors, (274), 273 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2021-11-07 07:34:22,880 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 265 [2021-11-07 07:34:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:22,880 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2021-11-07 07:34:22,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 6.794871794871795) internal successors, (265), 39 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:22,881 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2021-11-07 07:34:22,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-11-07 07:34:22,881 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:22,882 INFO L513 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 38, 38, 1, 1] [2021-11-07 07:34:22,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-11-07 07:34:23,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:23,082 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1758870369, now seen corresponding path program 38 times [2021-11-07 07:34:23,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:23,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089405067] [2021-11-07 07:34:23,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:23,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 4997 backedges. 0 proven. 4997 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:23,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:23,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089405067] [2021-11-07 07:34:23,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089405067] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:23,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855142105] [2021-11-07 07:34:23,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:34:23,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:23,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:23,694 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:23,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-07 07:34:26,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:34:26,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:34:26,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-07 07:34:26,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4997 backedges. 0 proven. 4997 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:27,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855142105] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:27,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:27,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-11-07 07:34:27,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150057339] [2021-11-07 07:34:27,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-07 07:34:27,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:27,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-07 07:34:27,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 07:34:27,318 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand has 41 states, 40 states have (on average 6.725) internal successors, (269), 40 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:27,424 INFO L93 Difference]: Finished difference Result 280 states and 280 transitions. [2021-11-07 07:34:27,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-07 07:34:27,424 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 6.725) internal successors, (269), 40 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 269 [2021-11-07 07:34:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:27,426 INFO L225 Difference]: With dead ends: 280 [2021-11-07 07:34:27,426 INFO L226 Difference]: Without dead ends: 279 [2021-11-07 07:34:27,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 07:34:27,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-11-07 07:34:27,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 278. [2021-11-07 07:34:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 276 states have (on average 1.0072463768115942) internal successors, (278), 277 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:27,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 278 transitions. [2021-11-07 07:34:27,431 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 278 transitions. Word has length 269 [2021-11-07 07:34:27,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:27,432 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 278 transitions. [2021-11-07 07:34:27,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 6.725) internal successors, (269), 40 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:27,432 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 278 transitions. [2021-11-07 07:34:27,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-07 07:34:27,434 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:27,434 INFO L513 BasicCegarLoop]: trace histogram [39, 39, 39, 39, 38, 38, 38, 1, 1] [2021-11-07 07:34:27,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2021-11-07 07:34:27,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:27,650 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:27,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:27,650 INFO L85 PathProgramCache]: Analyzing trace with hash -93804563, now seen corresponding path program 38 times [2021-11-07 07:34:27,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:27,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887176259] [2021-11-07 07:34:27,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:27,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:28,299 INFO L134 CoverageAnalysis]: Checked inductivity of 5111 backedges. 0 proven. 5111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:28,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:28,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887176259] [2021-11-07 07:34:28,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887176259] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:28,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213383506] [2021-11-07 07:34:28,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:34:28,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:28,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:28,300 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:28,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-11-07 07:34:31,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:34:31,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:34:31,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-07 07:34:31,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:32,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5111 backedges. 0 proven. 5111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:32,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [213383506] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:32,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:32,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-11-07 07:34:32,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768523465] [2021-11-07 07:34:32,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-07 07:34:32,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:32,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-07 07:34:32,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 07:34:32,045 INFO L87 Difference]: Start difference. First operand 278 states and 278 transitions. Second operand has 41 states, 40 states have (on average 6.8) internal successors, (272), 40 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:32,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:32,129 INFO L93 Difference]: Finished difference Result 282 states and 282 transitions. [2021-11-07 07:34:32,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-07 07:34:32,129 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 6.8) internal successors, (272), 40 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 272 [2021-11-07 07:34:32,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:32,130 INFO L225 Difference]: With dead ends: 282 [2021-11-07 07:34:32,130 INFO L226 Difference]: Without dead ends: 281 [2021-11-07 07:34:32,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 07:34:32,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2021-11-07 07:34:32,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2021-11-07 07:34:32,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 279 states have (on average 1.007168458781362) internal successors, (281), 280 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:32,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 281 transitions. [2021-11-07 07:34:32,135 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 281 transitions. Word has length 272 [2021-11-07 07:34:32,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:32,136 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 281 transitions. [2021-11-07 07:34:32,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 6.8) internal successors, (272), 40 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:32,136 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 281 transitions. [2021-11-07 07:34:32,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2021-11-07 07:34:32,137 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:32,137 INFO L513 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 39, 39, 1, 1] [2021-11-07 07:34:32,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2021-11-07 07:34:32,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:32,337 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:32,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:32,338 INFO L85 PathProgramCache]: Analyzing trace with hash -991925199, now seen corresponding path program 39 times [2021-11-07 07:34:32,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:32,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304145313] [2021-11-07 07:34:32,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:32,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:32,978 INFO L134 CoverageAnalysis]: Checked inductivity of 5265 backedges. 0 proven. 5265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:32,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:32,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304145313] [2021-11-07 07:34:32,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304145313] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:32,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75630977] [2021-11-07 07:34:32,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:34:32,980 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:32,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:32,984 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:32,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-11-07 07:34:36,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-07 07:34:36,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:34:36,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 07:34:36,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:36,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5265 backedges. 0 proven. 5265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:36,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75630977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:36,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:36,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2021-11-07 07:34:36,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769665982] [2021-11-07 07:34:36,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-07 07:34:36,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:36,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-07 07:34:36,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 07:34:36,777 INFO L87 Difference]: Start difference. First operand 281 states and 281 transitions. Second operand has 42 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:36,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:36,863 INFO L93 Difference]: Finished difference Result 287 states and 287 transitions. [2021-11-07 07:34:36,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-07 07:34:36,863 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 276 [2021-11-07 07:34:36,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:36,864 INFO L225 Difference]: With dead ends: 287 [2021-11-07 07:34:36,864 INFO L226 Difference]: Without dead ends: 286 [2021-11-07 07:34:36,865 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 07:34:36,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-11-07 07:34:36,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 285. [2021-11-07 07:34:36,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 283 states have (on average 1.0070671378091873) internal successors, (285), 284 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:36,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 285 transitions. [2021-11-07 07:34:36,868 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 285 transitions. Word has length 276 [2021-11-07 07:34:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:36,869 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 285 transitions. [2021-11-07 07:34:36,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 6.7317073170731705) internal successors, (276), 41 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:36,869 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 285 transitions. [2021-11-07 07:34:36,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2021-11-07 07:34:36,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:36,870 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 40, 40, 39, 39, 39, 1, 1] [2021-11-07 07:34:36,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-11-07 07:34:37,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:37,070 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:37,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1068563171, now seen corresponding path program 39 times [2021-11-07 07:34:37,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:37,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593099741] [2021-11-07 07:34:37,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:37,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 5382 backedges. 0 proven. 5382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:37,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:37,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593099741] [2021-11-07 07:34:37,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593099741] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:37,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520620577] [2021-11-07 07:34:37,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:34:37,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:37,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:37,783 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:37,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-11-07 07:34:41,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-07 07:34:41,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:34:41,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 07:34:41,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 5382 backedges. 0 proven. 5382 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:41,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520620577] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:41,674 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:41,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2021-11-07 07:34:41,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495400381] [2021-11-07 07:34:41,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-07 07:34:41,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:41,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-07 07:34:41,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 07:34:41,675 INFO L87 Difference]: Start difference. First operand 285 states and 285 transitions. Second operand has 42 states, 41 states have (on average 6.804878048780488) internal successors, (279), 41 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:41,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:41,762 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2021-11-07 07:34:41,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-07 07:34:41,762 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 6.804878048780488) internal successors, (279), 41 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 279 [2021-11-07 07:34:41,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:41,764 INFO L225 Difference]: With dead ends: 289 [2021-11-07 07:34:41,764 INFO L226 Difference]: Without dead ends: 288 [2021-11-07 07:34:41,764 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 07:34:41,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-07 07:34:41,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 288. [2021-11-07 07:34:41,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 286 states have (on average 1.006993006993007) internal successors, (288), 287 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:41,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 288 transitions. [2021-11-07 07:34:41,768 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 288 transitions. Word has length 279 [2021-11-07 07:34:41,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:41,768 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 288 transitions. [2021-11-07 07:34:41,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 6.804878048780488) internal successors, (279), 41 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:41,768 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 288 transitions. [2021-11-07 07:34:41,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2021-11-07 07:34:41,769 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:41,769 INFO L513 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 40, 40, 1, 1] [2021-11-07 07:34:41,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-11-07 07:34:41,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2021-11-07 07:34:41,970 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:41,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:41,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1223995745, now seen corresponding path program 40 times [2021-11-07 07:34:41,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:41,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903722503] [2021-11-07 07:34:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:41,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5540 backedges. 0 proven. 5540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:42,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:42,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903722503] [2021-11-07 07:34:42,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903722503] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:42,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648813185] [2021-11-07 07:34:42,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:34:42,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:42,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:42,661 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:42,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-11-07 07:34:46,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:34:46,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:34:46,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-07 07:34:46,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:46,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5540 backedges. 0 proven. 5540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:46,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648813185] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:46,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:46,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-11-07 07:34:46,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144444114] [2021-11-07 07:34:46,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-07 07:34:46,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:46,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-07 07:34:46,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 07:34:46,659 INFO L87 Difference]: Start difference. First operand 288 states and 288 transitions. Second operand has 43 states, 42 states have (on average 6.738095238095238) internal successors, (283), 42 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:46,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:46,749 INFO L93 Difference]: Finished difference Result 294 states and 294 transitions. [2021-11-07 07:34:46,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-07 07:34:46,750 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 6.738095238095238) internal successors, (283), 42 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 283 [2021-11-07 07:34:46,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:46,751 INFO L225 Difference]: With dead ends: 294 [2021-11-07 07:34:46,751 INFO L226 Difference]: Without dead ends: 293 [2021-11-07 07:34:46,751 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 07:34:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-07 07:34:46,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 292. [2021-11-07 07:34:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 290 states have (on average 1.006896551724138) internal successors, (292), 291 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:46,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2021-11-07 07:34:46,757 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 283 [2021-11-07 07:34:46,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:46,757 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2021-11-07 07:34:46,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 6.738095238095238) internal successors, (283), 42 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:46,758 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2021-11-07 07:34:46,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2021-11-07 07:34:46,759 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:46,759 INFO L513 BasicCegarLoop]: trace histogram [41, 41, 41, 41, 40, 40, 40, 1, 1] [2021-11-07 07:34:46,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2021-11-07 07:34:46,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:46,978 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:46,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:46,978 INFO L85 PathProgramCache]: Analyzing trace with hash -215059987, now seen corresponding path program 40 times [2021-11-07 07:34:46,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:46,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608467241] [2021-11-07 07:34:46,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:46,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:47,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5660 backedges. 0 proven. 5660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:47,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:47,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608467241] [2021-11-07 07:34:47,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608467241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:47,671 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452815556] [2021-11-07 07:34:47,671 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:34:47,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:47,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:47,672 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:47,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-11-07 07:34:51,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:34:51,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:34:51,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-07 07:34:51,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5660 backedges. 0 proven. 5660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:51,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452815556] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:51,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:51,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-11-07 07:34:51,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155624644] [2021-11-07 07:34:51,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-07 07:34:51,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:51,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-07 07:34:51,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 07:34:51,778 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand has 43 states, 42 states have (on average 6.809523809523809) internal successors, (286), 42 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:51,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:51,869 INFO L93 Difference]: Finished difference Result 296 states and 296 transitions. [2021-11-07 07:34:51,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-07 07:34:51,870 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 6.809523809523809) internal successors, (286), 42 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 286 [2021-11-07 07:34:51,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:51,871 INFO L225 Difference]: With dead ends: 296 [2021-11-07 07:34:51,871 INFO L226 Difference]: Without dead ends: 295 [2021-11-07 07:34:51,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 07:34:51,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-07 07:34:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2021-11-07 07:34:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 293 states have (on average 1.006825938566553) internal successors, (295), 294 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:51,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 295 transitions. [2021-11-07 07:34:51,876 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 295 transitions. Word has length 286 [2021-11-07 07:34:51,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:51,876 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 295 transitions. [2021-11-07 07:34:51,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 6.809523809523809) internal successors, (286), 42 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:51,877 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 295 transitions. [2021-11-07 07:34:51,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-07 07:34:51,878 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:51,878 INFO L513 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 41, 41, 1, 1] [2021-11-07 07:34:51,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2021-11-07 07:34:52,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-11-07 07:34:52,078 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:52,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:52,079 INFO L85 PathProgramCache]: Analyzing trace with hash -240044495, now seen corresponding path program 41 times [2021-11-07 07:34:52,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:52,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582487306] [2021-11-07 07:34:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:52,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:52,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5822 backedges. 0 proven. 5822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:52,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:52,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582487306] [2021-11-07 07:34:52,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582487306] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:52,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922043408] [2021-11-07 07:34:52,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:34:52,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:52,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:52,781 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:52,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-11-07 07:34:56,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-07 07:34:56,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:34:56,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-07 07:34:56,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:34:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5822 backedges. 0 proven. 5822 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:57,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922043408] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:57,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:34:57,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-11-07 07:34:57,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259978174] [2021-11-07 07:34:57,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-07 07:34:57,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:34:57,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-07 07:34:57,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 07:34:57,005 INFO L87 Difference]: Start difference. First operand 295 states and 295 transitions. Second operand has 44 states, 43 states have (on average 6.744186046511628) internal successors, (290), 43 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:57,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:34:57,091 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2021-11-07 07:34:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 07:34:57,091 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 6.744186046511628) internal successors, (290), 43 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 290 [2021-11-07 07:34:57,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:34:57,093 INFO L225 Difference]: With dead ends: 301 [2021-11-07 07:34:57,093 INFO L226 Difference]: Without dead ends: 300 [2021-11-07 07:34:57,093 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 07:34:57,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-07 07:34:57,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2021-11-07 07:34:57,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 297 states have (on average 1.0067340067340067) internal successors, (299), 298 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2021-11-07 07:34:57,098 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 290 [2021-11-07 07:34:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:34:57,098 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2021-11-07 07:34:57,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 6.744186046511628) internal successors, (290), 43 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:34:57,098 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2021-11-07 07:34:57,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2021-11-07 07:34:57,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:34:57,100 INFO L513 BasicCegarLoop]: trace histogram [42, 42, 42, 42, 41, 41, 41, 1, 1] [2021-11-07 07:34:57,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-11-07 07:34:57,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2021-11-07 07:34:57,314 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:34:57,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:34:57,314 INFO L85 PathProgramCache]: Analyzing trace with hash -44958947, now seen corresponding path program 41 times [2021-11-07 07:34:57,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:34:57,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702795073] [2021-11-07 07:34:57,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:34:57,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:34:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:34:58,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5945 backedges. 0 proven. 5945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:34:58,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:34:58,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702795073] [2021-11-07 07:34:58,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702795073] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:34:58,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877092104] [2021-11-07 07:34:58,052 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:34:58,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:34:58,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:34:58,052 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:34:58,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-11-07 07:35:01,691 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-07 07:35:01,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:35:01,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-07 07:35:01,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:35:02,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5945 backedges. 0 proven. 5945 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:02,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877092104] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:02,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:35:02,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-11-07 07:35:02,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477815439] [2021-11-07 07:35:02,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-07 07:35:02,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:35:02,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-07 07:35:02,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 07:35:02,357 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand has 44 states, 43 states have (on average 6.813953488372093) internal successors, (293), 43 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:35:02,445 INFO L93 Difference]: Finished difference Result 303 states and 303 transitions. [2021-11-07 07:35:02,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 07:35:02,446 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 6.813953488372093) internal successors, (293), 43 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 293 [2021-11-07 07:35:02,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:35:02,447 INFO L225 Difference]: With dead ends: 303 [2021-11-07 07:35:02,447 INFO L226 Difference]: Without dead ends: 302 [2021-11-07 07:35:02,447 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 07:35:02,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-07 07:35:02,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-11-07 07:35:02,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 300 states have (on average 1.0066666666666666) internal successors, (302), 301 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:02,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2021-11-07 07:35:02,452 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 293 [2021-11-07 07:35:02,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:35:02,453 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2021-11-07 07:35:02,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 6.813953488372093) internal successors, (293), 43 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:02,453 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2021-11-07 07:35:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-07 07:35:02,455 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:35:02,455 INFO L513 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 42, 42, 1, 1] [2021-11-07 07:35:02,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2021-11-07 07:35:02,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:02,662 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:35:02,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:35:02,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1081301151, now seen corresponding path program 42 times [2021-11-07 07:35:02,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:35:02,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232793172] [2021-11-07 07:35:02,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:35:02,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:35:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6111 backedges. 0 proven. 6111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:03,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:35:03,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232793172] [2021-11-07 07:35:03,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232793172] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:03,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395131440] [2021-11-07 07:35:03,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:35:03,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:03,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:35:03,449 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:35:03,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-11-07 07:35:07,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-07 07:35:07,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:35:07,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-07 07:35:07,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:35:07,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6111 backedges. 0 proven. 6111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:07,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395131440] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:07,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:35:07,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2021-11-07 07:35:07,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489640187] [2021-11-07 07:35:07,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-07 07:35:07,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:35:07,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-07 07:35:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 07:35:07,765 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand has 45 states, 44 states have (on average 6.75) internal successors, (297), 44 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:07,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:35:07,853 INFO L93 Difference]: Finished difference Result 308 states and 308 transitions. [2021-11-07 07:35:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-07 07:35:07,853 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 6.75) internal successors, (297), 44 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 297 [2021-11-07 07:35:07,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:35:07,855 INFO L225 Difference]: With dead ends: 308 [2021-11-07 07:35:07,855 INFO L226 Difference]: Without dead ends: 307 [2021-11-07 07:35:07,855 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 07:35:07,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-07 07:35:07,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 306. [2021-11-07 07:35:07,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 304 states have (on average 1.006578947368421) internal successors, (306), 305 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:07,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 306 transitions. [2021-11-07 07:35:07,859 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 306 transitions. Word has length 297 [2021-11-07 07:35:07,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:35:07,859 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 306 transitions. [2021-11-07 07:35:07,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 6.75) internal successors, (297), 44 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:07,859 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 306 transitions. [2021-11-07 07:35:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-07 07:35:07,888 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:35:07,888 INFO L513 BasicCegarLoop]: trace histogram [43, 43, 43, 43, 42, 42, 42, 1, 1] [2021-11-07 07:35:07,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2021-11-07 07:35:08,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:08,089 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:35:08,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:35:08,089 INFO L85 PathProgramCache]: Analyzing trace with hash -787825683, now seen corresponding path program 42 times [2021-11-07 07:35:08,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:35:08,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162056830] [2021-11-07 07:35:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:35:08,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:35:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6237 backedges. 0 proven. 6237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:08,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:35:08,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162056830] [2021-11-07 07:35:08,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162056830] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:08,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343038568] [2021-11-07 07:35:08,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:35:08,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:08,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:35:08,840 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:35:08,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-11-07 07:35:12,653 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-07 07:35:12,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:35:12,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-07 07:35:12,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:35:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 6237 backedges. 0 proven. 6237 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:13,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343038568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:13,431 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:35:13,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2021-11-07 07:35:13,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319591211] [2021-11-07 07:35:13,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-07 07:35:13,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:35:13,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-07 07:35:13,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 07:35:13,432 INFO L87 Difference]: Start difference. First operand 306 states and 306 transitions. Second operand has 45 states, 44 states have (on average 6.818181818181818) internal successors, (300), 44 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:13,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:35:13,567 INFO L93 Difference]: Finished difference Result 310 states and 310 transitions. [2021-11-07 07:35:13,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-07 07:35:13,568 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 6.818181818181818) internal successors, (300), 44 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 300 [2021-11-07 07:35:13,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:35:13,570 INFO L225 Difference]: With dead ends: 310 [2021-11-07 07:35:13,570 INFO L226 Difference]: Without dead ends: 309 [2021-11-07 07:35:13,570 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 07:35:13,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-07 07:35:13,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-11-07 07:35:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 1.006514657980456) internal successors, (309), 308 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2021-11-07 07:35:13,577 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 300 [2021-11-07 07:35:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:35:13,577 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2021-11-07 07:35:13,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 6.818181818181818) internal successors, (300), 44 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2021-11-07 07:35:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-07 07:35:13,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:35:13,579 INFO L513 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 43, 43, 1, 1] [2021-11-07 07:35:13,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2021-11-07 07:35:13,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-11-07 07:35:13,806 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:35:13,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:35:13,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1806139343, now seen corresponding path program 43 times [2021-11-07 07:35:13,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:35:13,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028242597] [2021-11-07 07:35:13,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:35:13,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:35:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 6407 backedges. 0 proven. 6407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:14,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:35:14,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028242597] [2021-11-07 07:35:14,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028242597] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:14,739 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136572329] [2021-11-07 07:35:14,739 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:35:14,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:14,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:35:14,740 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:35:14,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-11-07 07:35:18,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:18,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-07 07:35:18,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:35:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6407 backedges. 0 proven. 6407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:19,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136572329] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:19,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:35:19,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2021-11-07 07:35:19,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446320605] [2021-11-07 07:35:19,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-07 07:35:19,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:35:19,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-07 07:35:19,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 07:35:19,242 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand has 46 states, 45 states have (on average 6.7555555555555555) internal successors, (304), 45 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:19,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:35:19,333 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2021-11-07 07:35:19,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-07 07:35:19,333 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 6.7555555555555555) internal successors, (304), 45 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2021-11-07 07:35:19,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:35:19,334 INFO L225 Difference]: With dead ends: 315 [2021-11-07 07:35:19,335 INFO L226 Difference]: Without dead ends: 314 [2021-11-07 07:35:19,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 07:35:19,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-07 07:35:19,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 313. [2021-11-07 07:35:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 311 states have (on average 1.0064308681672025) internal successors, (313), 312 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:19,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 313 transitions. [2021-11-07 07:35:19,341 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 313 transitions. Word has length 304 [2021-11-07 07:35:19,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:35:19,341 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 313 transitions. [2021-11-07 07:35:19,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 6.7555555555555555) internal successors, (304), 45 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:19,342 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 313 transitions. [2021-11-07 07:35:19,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-07 07:35:19,343 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:35:19,344 INFO L513 BasicCegarLoop]: trace histogram [44, 44, 44, 44, 43, 43, 43, 1, 1] [2021-11-07 07:35:19,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-11-07 07:35:19,570 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:19,570 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:35:19,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:35:19,570 INFO L85 PathProgramCache]: Analyzing trace with hash 653160733, now seen corresponding path program 43 times [2021-11-07 07:35:19,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:35:19,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67565608] [2021-11-07 07:35:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:35:19,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:35:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:20,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6536 backedges. 0 proven. 6536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:20,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:35:20,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67565608] [2021-11-07 07:35:20,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67565608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:20,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941301915] [2021-11-07 07:35:20,410 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:35:20,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:20,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:35:20,411 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:35:20,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-11-07 07:35:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:24,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-07 07:35:24,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:35:25,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6536 backedges. 0 proven. 6536 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:25,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941301915] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:25,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:35:25,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2021-11-07 07:35:25,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531688093] [2021-11-07 07:35:25,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-07 07:35:25,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:35:25,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-07 07:35:25,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 07:35:25,075 INFO L87 Difference]: Start difference. First operand 313 states and 313 transitions. Second operand has 46 states, 45 states have (on average 6.822222222222222) internal successors, (307), 45 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:25,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:35:25,184 INFO L93 Difference]: Finished difference Result 317 states and 317 transitions. [2021-11-07 07:35:25,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-07 07:35:25,184 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 6.822222222222222) internal successors, (307), 45 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 307 [2021-11-07 07:35:25,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:35:25,185 INFO L225 Difference]: With dead ends: 317 [2021-11-07 07:35:25,186 INFO L226 Difference]: Without dead ends: 316 [2021-11-07 07:35:25,186 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 07:35:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-07 07:35:25,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 316. [2021-11-07 07:35:25,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 314 states have (on average 1.0063694267515924) internal successors, (316), 315 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:25,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 316 transitions. [2021-11-07 07:35:25,190 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 316 transitions. Word has length 307 [2021-11-07 07:35:25,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:35:25,190 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 316 transitions. [2021-11-07 07:35:25,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 6.822222222222222) internal successors, (307), 45 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:25,190 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 316 transitions. [2021-11-07 07:35:25,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-11-07 07:35:25,191 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:35:25,191 INFO L513 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 44, 44, 1, 1] [2021-11-07 07:35:25,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-11-07 07:35:25,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:25,406 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:35:25,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:35:25,406 INFO L85 PathProgramCache]: Analyzing trace with hash 972954977, now seen corresponding path program 44 times [2021-11-07 07:35:25,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:35:25,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996704017] [2021-11-07 07:35:25,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:35:25,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:35:25,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6710 backedges. 0 proven. 6710 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:26,262 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:35:26,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996704017] [2021-11-07 07:35:26,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996704017] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:26,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037963395] [2021-11-07 07:35:26,263 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:35:26,263 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:26,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:35:26,264 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:35:26,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-11-07 07:35:30,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:35:30,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:35:30,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 07:35:30,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:35:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6710 backedges. 0 proven. 6710 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:30,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037963395] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:30,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:35:30,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-11-07 07:35:30,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560637819] [2021-11-07 07:35:30,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-07 07:35:30,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:35:30,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-07 07:35:30,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 07:35:30,975 INFO L87 Difference]: Start difference. First operand 316 states and 316 transitions. Second operand has 47 states, 46 states have (on average 6.760869565217392) internal successors, (311), 46 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:31,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:35:31,080 INFO L93 Difference]: Finished difference Result 322 states and 322 transitions. [2021-11-07 07:35:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-07 07:35:31,080 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 6.760869565217392) internal successors, (311), 46 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 311 [2021-11-07 07:35:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:35:31,081 INFO L225 Difference]: With dead ends: 322 [2021-11-07 07:35:31,081 INFO L226 Difference]: Without dead ends: 321 [2021-11-07 07:35:31,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 07:35:31,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-11-07 07:35:31,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2021-11-07 07:35:31,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 318 states have (on average 1.0062893081761006) internal successors, (320), 319 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:31,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2021-11-07 07:35:31,086 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 311 [2021-11-07 07:35:31,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:35:31,086 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2021-11-07 07:35:31,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 6.760869565217392) internal successors, (311), 46 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2021-11-07 07:35:31,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2021-11-07 07:35:31,087 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:35:31,087 INFO L513 BasicCegarLoop]: trace histogram [45, 45, 45, 45, 44, 44, 44, 1, 1] [2021-11-07 07:35:31,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-11-07 07:35:31,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2021-11-07 07:35:31,288 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:35:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:35:31,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1432517139, now seen corresponding path program 44 times [2021-11-07 07:35:31,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:35:31,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479876165] [2021-11-07 07:35:31,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:35:31,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:35:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6842 backedges. 0 proven. 6842 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:32,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:35:32,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479876165] [2021-11-07 07:35:32,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479876165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:32,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864248592] [2021-11-07 07:35:32,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:35:32,194 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:32,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:35:32,195 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:35:32,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-11-07 07:35:36,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:35:36,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:35:36,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 07:35:36,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:35:37,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6842 backedges. 0 proven. 6842 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:37,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864248592] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:37,147 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:35:37,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-11-07 07:35:37,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27145179] [2021-11-07 07:35:37,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-07 07:35:37,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:35:37,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-07 07:35:37,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 07:35:37,149 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand has 47 states, 46 states have (on average 6.826086956521739) internal successors, (314), 46 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:37,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:35:37,243 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2021-11-07 07:35:37,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-07 07:35:37,244 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 6.826086956521739) internal successors, (314), 46 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 314 [2021-11-07 07:35:37,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:35:37,245 INFO L225 Difference]: With dead ends: 324 [2021-11-07 07:35:37,245 INFO L226 Difference]: Without dead ends: 323 [2021-11-07 07:35:37,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 07:35:37,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-07 07:35:37,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-11-07 07:35:37,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 321 states have (on average 1.0062305295950156) internal successors, (323), 322 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:37,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 323 transitions. [2021-11-07 07:35:37,249 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 323 transitions. Word has length 314 [2021-11-07 07:35:37,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:35:37,249 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 323 transitions. [2021-11-07 07:35:37,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 6.826086956521739) internal successors, (314), 46 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:37,250 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 323 transitions. [2021-11-07 07:35:37,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-07 07:35:37,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:35:37,251 INFO L513 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 45, 45, 1, 1] [2021-11-07 07:35:37,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2021-11-07 07:35:37,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:37,451 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:35:37,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:35:37,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1937132081, now seen corresponding path program 45 times [2021-11-07 07:35:37,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:35:37,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546369906] [2021-11-07 07:35:37,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:35:37,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:35:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 7020 backedges. 0 proven. 7020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:38,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:35:38,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546369906] [2021-11-07 07:35:38,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546369906] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:38,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [414053774] [2021-11-07 07:35:38,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:35:38,298 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:38,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:35:38,300 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:35:38,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-11-07 07:35:42,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-07 07:35:42,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:35:42,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 597 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-07 07:35:42,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:35:43,206 INFO L134 CoverageAnalysis]: Checked inductivity of 7020 backedges. 0 proven. 7020 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:43,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [414053774] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:43,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:35:43,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-11-07 07:35:43,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813989934] [2021-11-07 07:35:43,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 07:35:43,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:35:43,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 07:35:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 07:35:43,208 INFO L87 Difference]: Start difference. First operand 323 states and 323 transitions. Second operand has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:43,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:35:43,302 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2021-11-07 07:35:43,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 07:35:43,303 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2021-11-07 07:35:43,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:35:43,304 INFO L225 Difference]: With dead ends: 329 [2021-11-07 07:35:43,304 INFO L226 Difference]: Without dead ends: 328 [2021-11-07 07:35:43,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 07:35:43,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-07 07:35:43,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 327. [2021-11-07 07:35:43,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 325 states have (on average 1.0061538461538462) internal successors, (327), 326 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:43,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2021-11-07 07:35:43,309 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 318 [2021-11-07 07:35:43,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:35:43,309 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2021-11-07 07:35:43,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.76595744680851) internal successors, (318), 47 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:43,309 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2021-11-07 07:35:43,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2021-11-07 07:35:43,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:35:43,310 INFO L513 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 45, 45, 45, 1, 1] [2021-11-07 07:35:43,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2021-11-07 07:35:43,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:43,511 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:35:43,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:35:43,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1921279773, now seen corresponding path program 45 times [2021-11-07 07:35:43,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:35:43,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188315266] [2021-11-07 07:35:43,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:35:43,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:35:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:44,459 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 0 proven. 7155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:44,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:35:44,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188315266] [2021-11-07 07:35:44,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188315266] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:44,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81995370] [2021-11-07 07:35:44,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:35:44,460 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:44,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:35:44,461 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:35:44,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-11-07 07:35:48,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-07 07:35:48,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:35:48,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-07 07:35:48,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:35:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 7155 backedges. 0 proven. 7155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:49,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81995370] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:49,508 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:35:49,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-11-07 07:35:49,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829112063] [2021-11-07 07:35:49,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 07:35:49,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:35:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 07:35:49,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 07:35:49,509 INFO L87 Difference]: Start difference. First operand 327 states and 327 transitions. Second operand has 48 states, 47 states have (on average 6.829787234042553) internal successors, (321), 47 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:49,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:35:49,606 INFO L93 Difference]: Finished difference Result 331 states and 331 transitions. [2021-11-07 07:35:49,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 07:35:49,607 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.829787234042553) internal successors, (321), 47 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 321 [2021-11-07 07:35:49,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:35:49,608 INFO L225 Difference]: With dead ends: 331 [2021-11-07 07:35:49,608 INFO L226 Difference]: Without dead ends: 330 [2021-11-07 07:35:49,608 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 07:35:49,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-07 07:35:49,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 330. [2021-11-07 07:35:49,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 328 states have (on average 1.0060975609756098) internal successors, (330), 329 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:49,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 330 transitions. [2021-11-07 07:35:49,613 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 330 transitions. Word has length 321 [2021-11-07 07:35:49,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:35:49,613 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 330 transitions. [2021-11-07 07:35:49,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.829787234042553) internal successors, (321), 47 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:49,613 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 330 transitions. [2021-11-07 07:35:49,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2021-11-07 07:35:49,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:35:49,614 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 1, 1] [2021-11-07 07:35:49,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-11-07 07:35:49,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-11-07 07:35:49,815 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:35:49,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:35:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1034490721, now seen corresponding path program 46 times [2021-11-07 07:35:49,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:35:49,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78908154] [2021-11-07 07:35:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:35:49,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:35:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:50,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:50,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:35:50,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78908154] [2021-11-07 07:35:50,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78908154] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:50,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436828154] [2021-11-07 07:35:50,788 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:35:50,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:50,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:35:50,792 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:35:50,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-11-07 07:35:55,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:35:55,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:35:55,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-07 07:35:55,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:35:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7337 backedges. 0 proven. 7337 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:55,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436828154] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:55,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:35:55,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2021-11-07 07:35:55,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749003749] [2021-11-07 07:35:55,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 07:35:55,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:35:55,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 07:35:55,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 07:35:55,968 INFO L87 Difference]: Start difference. First operand 330 states and 330 transitions. Second operand has 49 states, 48 states have (on average 6.770833333333333) internal successors, (325), 48 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:35:56,075 INFO L93 Difference]: Finished difference Result 336 states and 336 transitions. [2021-11-07 07:35:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-07 07:35:56,076 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 6.770833333333333) internal successors, (325), 48 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 325 [2021-11-07 07:35:56,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:35:56,077 INFO L225 Difference]: With dead ends: 336 [2021-11-07 07:35:56,077 INFO L226 Difference]: Without dead ends: 335 [2021-11-07 07:35:56,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 371 GetRequests, 324 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 07:35:56,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-07 07:35:56,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 334. [2021-11-07 07:35:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 332 states have (on average 1.0060240963855422) internal successors, (334), 333 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 334 transitions. [2021-11-07 07:35:56,083 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 334 transitions. Word has length 325 [2021-11-07 07:35:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:35:56,083 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 334 transitions. [2021-11-07 07:35:56,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 6.770833333333333) internal successors, (325), 48 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:35:56,083 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 334 transitions. [2021-11-07 07:35:56,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-07 07:35:56,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:35:56,085 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 46, 1, 1] [2021-11-07 07:35:56,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2021-11-07 07:35:56,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:56,286 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:35:56,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:35:56,286 INFO L85 PathProgramCache]: Analyzing trace with hash 2122764269, now seen corresponding path program 46 times [2021-11-07 07:35:56,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:35:56,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404694594] [2021-11-07 07:35:56,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:35:56,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:35:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:35:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:35:57,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:35:57,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404694594] [2021-11-07 07:35:57,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404694594] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:35:57,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83329046] [2021-11-07 07:35:57,174 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:35:57,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:35:57,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:35:57,174 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:35:57,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-11-07 07:36:01,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:36:01,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:36:01,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-07 07:36:01,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:36:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 7475 backedges. 0 proven. 7475 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:02,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83329046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:02,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:36:02,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2021-11-07 07:36:02,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605300487] [2021-11-07 07:36:02,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 07:36:02,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:36:02,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 07:36:02,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 07:36:02,575 INFO L87 Difference]: Start difference. First operand 334 states and 334 transitions. Second operand has 49 states, 48 states have (on average 6.833333333333333) internal successors, (328), 48 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:02,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:36:02,714 INFO L93 Difference]: Finished difference Result 338 states and 338 transitions. [2021-11-07 07:36:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-07 07:36:02,714 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 6.833333333333333) internal successors, (328), 48 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 328 [2021-11-07 07:36:02,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:36:02,716 INFO L225 Difference]: With dead ends: 338 [2021-11-07 07:36:02,716 INFO L226 Difference]: Without dead ends: 337 [2021-11-07 07:36:02,717 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 07:36:02,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-07 07:36:02,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2021-11-07 07:36:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 335 states have (on average 1.0059701492537314) internal successors, (337), 336 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:02,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 337 transitions. [2021-11-07 07:36:02,724 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 337 transitions. Word has length 328 [2021-11-07 07:36:02,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:36:02,724 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 337 transitions. [2021-11-07 07:36:02,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 6.833333333333333) internal successors, (328), 48 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:02,724 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 337 transitions. [2021-11-07 07:36:02,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-11-07 07:36:02,726 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:36:02,726 INFO L513 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 47, 47, 1, 1] [2021-11-07 07:36:02,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-11-07 07:36:02,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:36:02,954 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:36:02,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:36:02,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1034589233, now seen corresponding path program 47 times [2021-11-07 07:36:02,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:36:02,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203853112] [2021-11-07 07:36:02,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:36:02,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:36:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:36:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 7661 backedges. 0 proven. 7661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:03,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:36:03,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203853112] [2021-11-07 07:36:03,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203853112] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:03,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635749858] [2021-11-07 07:36:03,955 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:36:03,955 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:36:03,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:36:03,958 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:36:03,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-11-07 07:36:08,671 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-07 07:36:08,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:36:08,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-07 07:36:08,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:36:09,404 INFO L134 CoverageAnalysis]: Checked inductivity of 7661 backedges. 0 proven. 7661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:09,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635749858] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:09,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:36:09,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2021-11-07 07:36:09,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547589088] [2021-11-07 07:36:09,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-07 07:36:09,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:36:09,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-07 07:36:09,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 07:36:09,406 INFO L87 Difference]: Start difference. First operand 337 states and 337 transitions. Second operand has 50 states, 49 states have (on average 6.775510204081633) internal successors, (332), 49 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:09,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:36:09,510 INFO L93 Difference]: Finished difference Result 343 states and 343 transitions. [2021-11-07 07:36:09,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 07:36:09,510 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 6.775510204081633) internal successors, (332), 49 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 332 [2021-11-07 07:36:09,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:36:09,512 INFO L225 Difference]: With dead ends: 343 [2021-11-07 07:36:09,512 INFO L226 Difference]: Without dead ends: 342 [2021-11-07 07:36:09,512 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 07:36:09,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-11-07 07:36:09,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 341. [2021-11-07 07:36:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 339 states have (on average 1.0058997050147493) internal successors, (341), 340 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 341 transitions. [2021-11-07 07:36:09,516 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 341 transitions. Word has length 332 [2021-11-07 07:36:09,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:36:09,516 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 341 transitions. [2021-11-07 07:36:09,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 6.775510204081633) internal successors, (332), 49 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:09,516 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 341 transitions. [2021-11-07 07:36:09,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-07 07:36:09,518 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:36:09,518 INFO L513 BasicCegarLoop]: trace histogram [48, 48, 48, 48, 47, 47, 47, 1, 1] [2021-11-07 07:36:09,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2021-11-07 07:36:09,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-11-07 07:36:09,722 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:36:09,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:36:09,722 INFO L85 PathProgramCache]: Analyzing trace with hash 762567965, now seen corresponding path program 47 times [2021-11-07 07:36:09,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:36:09,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955333261] [2021-11-07 07:36:09,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:36:09,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:36:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:36:10,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7802 backedges. 0 proven. 7802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:10,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:36:10,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955333261] [2021-11-07 07:36:10,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955333261] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:10,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207311054] [2021-11-07 07:36:10,639 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:36:10,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:36:10,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:36:10,639 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:36:10,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-11-07 07:36:15,290 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-07 07:36:15,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:36:15,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-07 07:36:15,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:36:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7802 backedges. 0 proven. 7802 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:16,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207311054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:16,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:36:16,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2021-11-07 07:36:16,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130386718] [2021-11-07 07:36:16,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-07 07:36:16,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:36:16,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-07 07:36:16,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 07:36:16,207 INFO L87 Difference]: Start difference. First operand 341 states and 341 transitions. Second operand has 50 states, 49 states have (on average 6.836734693877551) internal successors, (335), 49 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:16,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:36:16,355 INFO L93 Difference]: Finished difference Result 345 states and 345 transitions. [2021-11-07 07:36:16,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 07:36:16,356 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 6.836734693877551) internal successors, (335), 49 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 335 [2021-11-07 07:36:16,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:36:16,358 INFO L225 Difference]: With dead ends: 345 [2021-11-07 07:36:16,358 INFO L226 Difference]: Without dead ends: 344 [2021-11-07 07:36:16,358 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 07:36:16,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-07 07:36:16,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-11-07 07:36:16,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 342 states have (on average 1.0058479532163742) internal successors, (344), 343 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:16,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 344 transitions. [2021-11-07 07:36:16,365 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 344 transitions. Word has length 335 [2021-11-07 07:36:16,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:36:16,365 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 344 transitions. [2021-11-07 07:36:16,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 6.836734693877551) internal successors, (335), 49 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:16,365 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 344 transitions. [2021-11-07 07:36:16,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2021-11-07 07:36:16,367 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:36:16,369 INFO L513 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 48, 48, 1, 1] [2021-11-07 07:36:16,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-11-07 07:36:16,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable99 [2021-11-07 07:36:16,591 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:36:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:36:16,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1743620449, now seen corresponding path program 48 times [2021-11-07 07:36:16,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:36:16,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044819428] [2021-11-07 07:36:16,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:36:16,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:36:16,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:36:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7992 backedges. 0 proven. 7992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:17,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:36:17,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044819428] [2021-11-07 07:36:17,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044819428] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:17,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315256448] [2021-11-07 07:36:17,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:36:17,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:36:17,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:36:17,504 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:36:17,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-11-07 07:36:22,289 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-07 07:36:22,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:36:22,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-07 07:36:22,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:36:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7992 backedges. 0 proven. 7992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:23,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315256448] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:23,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:36:23,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-11-07 07:36:23,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610104407] [2021-11-07 07:36:23,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-07 07:36:23,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:36:23,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-07 07:36:23,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 07:36:23,082 INFO L87 Difference]: Start difference. First operand 344 states and 344 transitions. Second operand has 51 states, 50 states have (on average 6.78) internal successors, (339), 50 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:23,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:36:23,193 INFO L93 Difference]: Finished difference Result 350 states and 350 transitions. [2021-11-07 07:36:23,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-07 07:36:23,193 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 6.78) internal successors, (339), 50 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 339 [2021-11-07 07:36:23,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:36:23,195 INFO L225 Difference]: With dead ends: 350 [2021-11-07 07:36:23,195 INFO L226 Difference]: Without dead ends: 349 [2021-11-07 07:36:23,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 07:36:23,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-07 07:36:23,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 348. [2021-11-07 07:36:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 346 states have (on average 1.0057803468208093) internal successors, (348), 347 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:23,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 348 transitions. [2021-11-07 07:36:23,202 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 348 transitions. Word has length 339 [2021-11-07 07:36:23,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:36:23,202 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 348 transitions. [2021-11-07 07:36:23,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 6.78) internal successors, (339), 50 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:23,202 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 348 transitions. [2021-11-07 07:36:23,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2021-11-07 07:36:23,203 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:36:23,203 INFO L513 BasicCegarLoop]: trace histogram [49, 49, 49, 49, 48, 48, 48, 1, 1] [2021-11-07 07:36:23,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Forceful destruction successful, exit code 0 [2021-11-07 07:36:23,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-11-07 07:36:23,404 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:36:23,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:36:23,404 INFO L85 PathProgramCache]: Analyzing trace with hash 862362093, now seen corresponding path program 48 times [2021-11-07 07:36:23,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:36:23,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174252727] [2021-11-07 07:36:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:36:23,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:36:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:36:24,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8136 backedges. 0 proven. 8136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:24,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:36:24,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174252727] [2021-11-07 07:36:24,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174252727] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:24,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695841362] [2021-11-07 07:36:24,526 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:36:24,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:36:24,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:36:24,527 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:36:24,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-11-07 07:36:29,498 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-07 07:36:29,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:36:29,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-07 07:36:29,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:36:30,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8136 backedges. 0 proven. 8136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:30,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695841362] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:30,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:36:30,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-11-07 07:36:30,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252855531] [2021-11-07 07:36:30,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-07 07:36:30,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:36:30,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-07 07:36:30,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 07:36:30,335 INFO L87 Difference]: Start difference. First operand 348 states and 348 transitions. Second operand has 51 states, 50 states have (on average 6.84) internal successors, (342), 50 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:36:30,459 INFO L93 Difference]: Finished difference Result 352 states and 352 transitions. [2021-11-07 07:36:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-07 07:36:30,459 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 6.84) internal successors, (342), 50 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 342 [2021-11-07 07:36:30,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:36:30,460 INFO L225 Difference]: With dead ends: 352 [2021-11-07 07:36:30,461 INFO L226 Difference]: Without dead ends: 351 [2021-11-07 07:36:30,461 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 07:36:30,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-07 07:36:30,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2021-11-07 07:36:30,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 349 states have (on average 1.005730659025788) internal successors, (351), 350 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:30,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 351 transitions. [2021-11-07 07:36:30,470 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 351 transitions. Word has length 342 [2021-11-07 07:36:30,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:36:30,474 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 351 transitions. [2021-11-07 07:36:30,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 6.84) internal successors, (342), 50 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:30,474 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 351 transitions. [2021-11-07 07:36:30,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2021-11-07 07:36:30,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:36:30,476 INFO L513 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 49, 49, 1, 1] [2021-11-07 07:36:30,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-11-07 07:36:30,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:36:30,678 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:36:30,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:36:30,678 INFO L85 PathProgramCache]: Analyzing trace with hash -1986699727, now seen corresponding path program 49 times [2021-11-07 07:36:30,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:36:30,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353834201] [2021-11-07 07:36:30,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:36:30,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:36:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:36:31,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8330 backedges. 0 proven. 8330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:31,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:36:31,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353834201] [2021-11-07 07:36:31,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353834201] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:31,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66190385] [2021-11-07 07:36:31,741 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:36:31,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:36:31,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:36:31,743 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:36:31,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-11-07 07:36:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:36:36,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-07 07:36:36,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:36:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8330 backedges. 0 proven. 8330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:37,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66190385] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:37,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:36:37,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-11-07 07:36:37,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927770651] [2021-11-07 07:36:37,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-07 07:36:37,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:36:37,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-07 07:36:37,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:36:37,461 INFO L87 Difference]: Start difference. First operand 351 states and 351 transitions. Second operand has 52 states, 51 states have (on average 6.784313725490196) internal successors, (346), 51 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:37,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:36:37,577 INFO L93 Difference]: Finished difference Result 357 states and 357 transitions. [2021-11-07 07:36:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-07 07:36:37,577 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 6.784313725490196) internal successors, (346), 51 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 346 [2021-11-07 07:36:37,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:36:37,578 INFO L225 Difference]: With dead ends: 357 [2021-11-07 07:36:37,578 INFO L226 Difference]: Without dead ends: 356 [2021-11-07 07:36:37,579 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:36:37,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-07 07:36:37,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 355. [2021-11-07 07:36:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 353 states have (on average 1.0056657223796035) internal successors, (355), 354 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:37,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 355 transitions. [2021-11-07 07:36:37,583 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 355 transitions. Word has length 346 [2021-11-07 07:36:37,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:36:37,583 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 355 transitions. [2021-11-07 07:36:37,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 6.784313725490196) internal successors, (346), 51 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:37,584 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 355 transitions. [2021-11-07 07:36:37,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2021-11-07 07:36:37,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:36:37,585 INFO L513 BasicCegarLoop]: trace histogram [50, 50, 50, 50, 49, 49, 49, 1, 1] [2021-11-07 07:36:37,621 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-11-07 07:36:37,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-11-07 07:36:37,785 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:36:37,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:36:37,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1122184419, now seen corresponding path program 49 times [2021-11-07 07:36:37,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:36:37,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224939598] [2021-11-07 07:36:37,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:36:37,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:36:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:36:38,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8477 backedges. 0 proven. 8477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:38,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:36:38,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224939598] [2021-11-07 07:36:38,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224939598] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:38,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [93482195] [2021-11-07 07:36:38,786 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:36:38,786 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:36:38,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:36:38,787 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:36:38,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-11-07 07:36:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:36:43,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-07 07:36:43,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:36:44,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8477 backedges. 0 proven. 8477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:44,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [93482195] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:44,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:36:44,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-11-07 07:36:44,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235358427] [2021-11-07 07:36:44,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-07 07:36:44,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:36:44,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-07 07:36:44,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:36:44,765 INFO L87 Difference]: Start difference. First operand 355 states and 355 transitions. Second operand has 52 states, 51 states have (on average 6.8431372549019605) internal successors, (349), 51 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:36:44,952 INFO L93 Difference]: Finished difference Result 359 states and 359 transitions. [2021-11-07 07:36:44,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-07 07:36:44,953 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 6.8431372549019605) internal successors, (349), 51 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 349 [2021-11-07 07:36:44,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:36:44,954 INFO L225 Difference]: With dead ends: 359 [2021-11-07 07:36:44,954 INFO L226 Difference]: Without dead ends: 358 [2021-11-07 07:36:44,955 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:36:44,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2021-11-07 07:36:44,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2021-11-07 07:36:44,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 356 states have (on average 1.0056179775280898) internal successors, (358), 357 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:44,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 358 transitions. [2021-11-07 07:36:44,960 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 358 transitions. Word has length 349 [2021-11-07 07:36:44,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:36:44,960 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 358 transitions. [2021-11-07 07:36:44,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 6.8431372549019605) internal successors, (349), 51 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:44,960 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 358 transitions. [2021-11-07 07:36:44,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2021-11-07 07:36:44,961 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:36:44,961 INFO L513 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 50, 50, 1, 1] [2021-11-07 07:36:44,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Forceful destruction successful, exit code 0 [2021-11-07 07:36:45,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-11-07 07:36:45,162 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:36:45,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:36:45,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1848344417, now seen corresponding path program 50 times [2021-11-07 07:36:45,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:36:45,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143074229] [2021-11-07 07:36:45,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:36:45,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:36:45,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:36:46,192 INFO L134 CoverageAnalysis]: Checked inductivity of 8675 backedges. 0 proven. 8675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:46,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:36:46,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143074229] [2021-11-07 07:36:46,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143074229] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:46,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207013244] [2021-11-07 07:36:46,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:36:46,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:36:46,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:36:46,193 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:36:46,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-11-07 07:36:51,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:36:51,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:36:51,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-07 07:36:51,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:36:52,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8675 backedges. 0 proven. 8675 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:52,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207013244] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:52,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:36:52,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2021-11-07 07:36:52,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773695898] [2021-11-07 07:36:52,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-07 07:36:52,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:36:52,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-07 07:36:52,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 07:36:52,268 INFO L87 Difference]: Start difference. First operand 358 states and 358 transitions. Second operand has 53 states, 52 states have (on average 6.788461538461538) internal successors, (353), 52 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:36:52,379 INFO L93 Difference]: Finished difference Result 364 states and 364 transitions. [2021-11-07 07:36:52,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-07 07:36:52,379 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 6.788461538461538) internal successors, (353), 52 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 353 [2021-11-07 07:36:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:36:52,380 INFO L225 Difference]: With dead ends: 364 [2021-11-07 07:36:52,380 INFO L226 Difference]: Without dead ends: 363 [2021-11-07 07:36:52,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 07:36:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-11-07 07:36:52,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 362. [2021-11-07 07:36:52,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 360 states have (on average 1.0055555555555555) internal successors, (362), 361 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:52,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 362 transitions. [2021-11-07 07:36:52,385 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 362 transitions. Word has length 353 [2021-11-07 07:36:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:36:52,385 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 362 transitions. [2021-11-07 07:36:52,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 6.788461538461538) internal successors, (353), 52 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:52,385 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 362 transitions. [2021-11-07 07:36:52,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-11-07 07:36:52,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:36:52,386 INFO L513 BasicCegarLoop]: trace histogram [51, 51, 51, 51, 50, 50, 50, 1, 1] [2021-11-07 07:36:52,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Forceful destruction successful, exit code 0 [2021-11-07 07:36:52,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:36:52,587 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:36:52,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:36:52,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1747131411, now seen corresponding path program 50 times [2021-11-07 07:36:52,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:36:52,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820607002] [2021-11-07 07:36:52,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:36:52,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:36:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:36:53,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8825 backedges. 0 proven. 8825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:53,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:36:53,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820607002] [2021-11-07 07:36:53,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820607002] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:53,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730199382] [2021-11-07 07:36:53,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:36:53,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:36:53,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:36:53,621 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:36:53,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-11-07 07:36:58,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:36:58,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:36:58,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 667 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-07 07:36:58,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:36:59,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8825 backedges. 0 proven. 8825 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:36:59,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730199382] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:36:59,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:36:59,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2021-11-07 07:36:59,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882209238] [2021-11-07 07:36:59,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-07 07:36:59,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:36:59,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-07 07:36:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 07:36:59,673 INFO L87 Difference]: Start difference. First operand 362 states and 362 transitions. Second operand has 53 states, 52 states have (on average 6.846153846153846) internal successors, (356), 52 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:59,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:36:59,790 INFO L93 Difference]: Finished difference Result 366 states and 366 transitions. [2021-11-07 07:36:59,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-07 07:36:59,790 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 6.846153846153846) internal successors, (356), 52 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-11-07 07:36:59,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:36:59,791 INFO L225 Difference]: With dead ends: 366 [2021-11-07 07:36:59,791 INFO L226 Difference]: Without dead ends: 365 [2021-11-07 07:36:59,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 07:36:59,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2021-11-07 07:36:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 365. [2021-11-07 07:36:59,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 363 states have (on average 1.0055096418732783) internal successors, (365), 364 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:59,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2021-11-07 07:36:59,796 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 356 [2021-11-07 07:36:59,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:36:59,797 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2021-11-07 07:36:59,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 6.846153846153846) internal successors, (356), 52 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:36:59,797 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2021-11-07 07:36:59,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 361 [2021-11-07 07:36:59,798 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:36:59,798 INFO L513 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 51, 51, 1, 1] [2021-11-07 07:36:59,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-11-07 07:36:59,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-11-07 07:36:59,998 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:36:59,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:36:59,999 INFO L85 PathProgramCache]: Analyzing trace with hash -707352527, now seen corresponding path program 51 times [2021-11-07 07:36:59,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:36:59,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822601977] [2021-11-07 07:36:59,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:36:59,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:01,026 INFO L134 CoverageAnalysis]: Checked inductivity of 9027 backedges. 0 proven. 9027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:01,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:37:01,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822601977] [2021-11-07 07:37:01,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822601977] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:01,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633509974] [2021-11-07 07:37:01,027 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:37:01,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:01,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:01,027 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:37:01,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-11-07 07:37:06,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-07 07:37:06,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:37:06,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 675 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-07 07:37:06,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 9027 backedges. 0 proven. 9027 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:07,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633509974] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:07,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:37:07,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2021-11-07 07:37:07,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380301725] [2021-11-07 07:37:07,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-07 07:37:07,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:37:07,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-07 07:37:07,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 07:37:07,319 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand has 54 states, 53 states have (on average 6.7924528301886795) internal successors, (360), 53 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:07,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:07,439 INFO L93 Difference]: Finished difference Result 371 states and 371 transitions. [2021-11-07 07:37:07,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-07 07:37:07,439 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 6.7924528301886795) internal successors, (360), 53 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 360 [2021-11-07 07:37:07,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:07,440 INFO L225 Difference]: With dead ends: 371 [2021-11-07 07:37:07,440 INFO L226 Difference]: Without dead ends: 370 [2021-11-07 07:37:07,440 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 07:37:07,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-07 07:37:07,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 369. [2021-11-07 07:37:07,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 367 states have (on average 1.005449591280654) internal successors, (369), 368 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:07,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 369 transitions. [2021-11-07 07:37:07,444 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 369 transitions. Word has length 360 [2021-11-07 07:37:07,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:07,445 INFO L470 AbstractCegarLoop]: Abstraction has 369 states and 369 transitions. [2021-11-07 07:37:07,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 6.7924528301886795) internal successors, (360), 53 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 369 transitions. [2021-11-07 07:37:07,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-11-07 07:37:07,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:07,446 INFO L513 BasicCegarLoop]: trace histogram [52, 52, 52, 52, 51, 51, 51, 1, 1] [2021-11-07 07:37:07,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:07,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-11-07 07:37:07,646 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:37:07,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:07,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1629533923, now seen corresponding path program 51 times [2021-11-07 07:37:07,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:07,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627918491] [2021-11-07 07:37:07,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:07,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:07,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:08,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:37:08,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627918491] [2021-11-07 07:37:08,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627918491] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:08,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455195864] [2021-11-07 07:37:08,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:37:08,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:08,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:08,714 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:37:08,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-11-07 07:37:14,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-07 07:37:14,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:37:14,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-07 07:37:14,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:15,037 INFO L134 CoverageAnalysis]: Checked inductivity of 9180 backedges. 0 proven. 9180 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:15,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455195864] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:15,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:37:15,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2021-11-07 07:37:15,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084662228] [2021-11-07 07:37:15,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-07 07:37:15,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:37:15,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-07 07:37:15,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 07:37:15,039 INFO L87 Difference]: Start difference. First operand 369 states and 369 transitions. Second operand has 54 states, 53 states have (on average 6.849056603773585) internal successors, (363), 53 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:15,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:15,162 INFO L93 Difference]: Finished difference Result 373 states and 373 transitions. [2021-11-07 07:37:15,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-07 07:37:15,162 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 6.849056603773585) internal successors, (363), 53 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 363 [2021-11-07 07:37:15,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:15,163 INFO L225 Difference]: With dead ends: 373 [2021-11-07 07:37:15,163 INFO L226 Difference]: Without dead ends: 372 [2021-11-07 07:37:15,164 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 07:37:15,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-11-07 07:37:15,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2021-11-07 07:37:15,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 370 states have (on average 1.0054054054054054) internal successors, (372), 371 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:15,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 372 transitions. [2021-11-07 07:37:15,167 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 372 transitions. Word has length 363 [2021-11-07 07:37:15,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:15,168 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 372 transitions. [2021-11-07 07:37:15,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 6.849056603773585) internal successors, (363), 53 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 372 transitions. [2021-11-07 07:37:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2021-11-07 07:37:15,169 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:15,169 INFO L513 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 52, 52, 1, 1] [2021-11-07 07:37:15,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:15,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:15,369 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:37:15,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:15,370 INFO L85 PathProgramCache]: Analyzing trace with hash 499316065, now seen corresponding path program 52 times [2021-11-07 07:37:15,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:15,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642749595] [2021-11-07 07:37:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:15,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 9386 backedges. 0 proven. 9386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:16,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:37:16,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642749595] [2021-11-07 07:37:16,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642749595] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:16,438 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116209119] [2021-11-07 07:37:16,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:37:16,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:16,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:16,439 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:37:16,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-11-07 07:37:22,071 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:37:22,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:37:22,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 07:37:22,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:22,915 INFO L134 CoverageAnalysis]: Checked inductivity of 9386 backedges. 0 proven. 9386 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:22,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116209119] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:22,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:37:22,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2021-11-07 07:37:22,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995556641] [2021-11-07 07:37:22,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-07 07:37:22,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:37:22,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-07 07:37:22,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 07:37:22,917 INFO L87 Difference]: Start difference. First operand 372 states and 372 transitions. Second operand has 55 states, 54 states have (on average 6.796296296296297) internal successors, (367), 54 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:23,069 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2021-11-07 07:37:23,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-07 07:37:23,070 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 6.796296296296297) internal successors, (367), 54 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 367 [2021-11-07 07:37:23,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:23,071 INFO L225 Difference]: With dead ends: 378 [2021-11-07 07:37:23,071 INFO L226 Difference]: Without dead ends: 377 [2021-11-07 07:37:23,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 07:37:23,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-07 07:37:23,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 376. [2021-11-07 07:37:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 374 states have (on average 1.0053475935828877) internal successors, (376), 375 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:23,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 376 transitions. [2021-11-07 07:37:23,078 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 376 transitions. Word has length 367 [2021-11-07 07:37:23,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:23,078 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 376 transitions. [2021-11-07 07:37:23,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 6.796296296296297) internal successors, (367), 54 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:23,079 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 376 transitions. [2021-11-07 07:37:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-07 07:37:23,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:23,080 INFO L513 BasicCegarLoop]: trace histogram [53, 53, 53, 53, 52, 52, 52, 1, 1] [2021-11-07 07:37:23,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Ended with exit code 0 [2021-11-07 07:37:23,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:23,290 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:37:23,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1653190125, now seen corresponding path program 52 times [2021-11-07 07:37:23,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:23,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441449530] [2021-11-07 07:37:23,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:23,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 9542 backedges. 0 proven. 9542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:24,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:37:24,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441449530] [2021-11-07 07:37:24,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441449530] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:24,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997066076] [2021-11-07 07:37:24,426 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:37:24,426 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:24,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:24,427 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:37:24,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-11-07 07:37:30,093 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:37:30,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:37:30,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 07:37:30,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:31,009 INFO L134 CoverageAnalysis]: Checked inductivity of 9542 backedges. 0 proven. 9542 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:31,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997066076] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:31,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:37:31,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2021-11-07 07:37:31,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782505876] [2021-11-07 07:37:31,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-07 07:37:31,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:37:31,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-07 07:37:31,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 07:37:31,012 INFO L87 Difference]: Start difference. First operand 376 states and 376 transitions. Second operand has 55 states, 54 states have (on average 6.851851851851852) internal successors, (370), 54 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:31,179 INFO L93 Difference]: Finished difference Result 380 states and 380 transitions. [2021-11-07 07:37:31,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-07 07:37:31,179 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 6.851851851851852) internal successors, (370), 54 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 370 [2021-11-07 07:37:31,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:31,180 INFO L225 Difference]: With dead ends: 380 [2021-11-07 07:37:31,180 INFO L226 Difference]: Without dead ends: 379 [2021-11-07 07:37:31,180 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 07:37:31,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-07 07:37:31,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2021-11-07 07:37:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 377 states have (on average 1.0053050397877985) internal successors, (379), 378 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 379 transitions. [2021-11-07 07:37:31,184 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 379 transitions. Word has length 370 [2021-11-07 07:37:31,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:31,185 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 379 transitions. [2021-11-07 07:37:31,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 6.851851851851852) internal successors, (370), 54 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:31,185 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 379 transitions. [2021-11-07 07:37:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-07 07:37:31,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:31,186 INFO L513 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 53, 53, 1, 1] [2021-11-07 07:37:31,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:31,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:31,386 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:37:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:31,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1995541967, now seen corresponding path program 53 times [2021-11-07 07:37:31,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:31,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402415111] [2021-11-07 07:37:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:31,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:31,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:32,510 INFO L134 CoverageAnalysis]: Checked inductivity of 9752 backedges. 0 proven. 9752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:32,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:37:32,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402415111] [2021-11-07 07:37:32,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402415111] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:32,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830832141] [2021-11-07 07:37:32,511 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:37:32,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:32,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:32,512 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:37:32,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-11-07 07:37:38,428 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-07 07:37:38,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:37:38,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-07 07:37:38,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9752 backedges. 0 proven. 9752 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:39,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830832141] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:39,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:37:39,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2021-11-07 07:37:39,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148318661] [2021-11-07 07:37:39,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-07 07:37:39,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:37:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-07 07:37:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 07:37:39,271 INFO L87 Difference]: Start difference. First operand 379 states and 379 transitions. Second operand has 56 states, 55 states have (on average 6.8) internal successors, (374), 55 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:39,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:39,394 INFO L93 Difference]: Finished difference Result 385 states and 385 transitions. [2021-11-07 07:37:39,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-07 07:37:39,395 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 6.8) internal successors, (374), 55 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-11-07 07:37:39,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:39,395 INFO L225 Difference]: With dead ends: 385 [2021-11-07 07:37:39,395 INFO L226 Difference]: Without dead ends: 384 [2021-11-07 07:37:39,396 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 373 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 07:37:39,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-07 07:37:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 383. [2021-11-07 07:37:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 381 states have (on average 1.005249343832021) internal successors, (383), 382 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:39,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2021-11-07 07:37:39,400 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 374 [2021-11-07 07:37:39,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:39,400 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2021-11-07 07:37:39,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 6.8) internal successors, (374), 55 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:39,400 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2021-11-07 07:37:39,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2021-11-07 07:37:39,401 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:39,401 INFO L513 BasicCegarLoop]: trace histogram [54, 54, 54, 54, 53, 53, 53, 1, 1] [2021-11-07 07:37:39,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Ended with exit code 0 [2021-11-07 07:37:39,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:39,602 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:37:39,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:39,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1746616093, now seen corresponding path program 53 times [2021-11-07 07:37:39,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:39,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696167827] [2021-11-07 07:37:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:39,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:40,769 INFO L134 CoverageAnalysis]: Checked inductivity of 9911 backedges. 0 proven. 9911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:40,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:37:40,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696167827] [2021-11-07 07:37:40,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696167827] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:40,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929946160] [2021-11-07 07:37:40,770 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:37:40,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:40,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:40,770 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:37:40,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-11-07 07:37:46,731 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-07 07:37:46,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:37:46,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-07 07:37:46,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9911 backedges. 0 proven. 9911 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:47,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929946160] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:47,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:37:47,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2021-11-07 07:37:47,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849909265] [2021-11-07 07:37:47,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-07 07:37:47,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:37:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-07 07:37:47,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 07:37:47,633 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand has 56 states, 55 states have (on average 6.8545454545454545) internal successors, (377), 55 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:47,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:47,758 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2021-11-07 07:37:47,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-07 07:37:47,759 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 6.8545454545454545) internal successors, (377), 55 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2021-11-07 07:37:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:47,760 INFO L225 Difference]: With dead ends: 387 [2021-11-07 07:37:47,760 INFO L226 Difference]: Without dead ends: 386 [2021-11-07 07:37:47,760 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 07:37:47,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-07 07:37:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-11-07 07:37:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 384 states have (on average 1.0052083333333333) internal successors, (386), 385 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:47,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 386 transitions. [2021-11-07 07:37:47,764 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 386 transitions. Word has length 377 [2021-11-07 07:37:47,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:47,764 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 386 transitions. [2021-11-07 07:37:47,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 6.8545454545454545) internal successors, (377), 55 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:47,764 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 386 transitions. [2021-11-07 07:37:47,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-11-07 07:37:47,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:47,765 INFO L513 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 54, 54, 1, 1] [2021-11-07 07:37:47,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-11-07 07:37:47,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable111 [2021-11-07 07:37:47,970 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:37:47,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:47,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1544809313, now seen corresponding path program 54 times [2021-11-07 07:37:47,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:47,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260301422] [2021-11-07 07:37:47,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:47,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 10125 backedges. 0 proven. 10125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:49,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:37:49,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260301422] [2021-11-07 07:37:49,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260301422] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:49,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142552006] [2021-11-07 07:37:49,112 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:37:49,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:49,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:49,113 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:37:49,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-11-07 07:37:55,229 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-07 07:37:55,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:37:55,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 714 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-07 07:37:55,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10125 backedges. 0 proven. 10125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:56,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142552006] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:56,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:37:56,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2021-11-07 07:37:56,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610839189] [2021-11-07 07:37:56,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-07 07:37:56,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:37:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-07 07:37:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 07:37:56,078 INFO L87 Difference]: Start difference. First operand 386 states and 386 transitions. Second operand has 57 states, 56 states have (on average 6.803571428571429) internal successors, (381), 56 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:56,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:56,203 INFO L93 Difference]: Finished difference Result 392 states and 392 transitions. [2021-11-07 07:37:56,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-07 07:37:56,204 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 6.803571428571429) internal successors, (381), 56 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 381 [2021-11-07 07:37:56,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:56,204 INFO L225 Difference]: With dead ends: 392 [2021-11-07 07:37:56,204 INFO L226 Difference]: Without dead ends: 391 [2021-11-07 07:37:56,205 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 07:37:56,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-07 07:37:56,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 390. [2021-11-07 07:37:56,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 388 states have (on average 1.0051546391752577) internal successors, (390), 389 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:56,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 390 transitions. [2021-11-07 07:37:56,209 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 390 transitions. Word has length 381 [2021-11-07 07:37:56,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:56,209 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 390 transitions. [2021-11-07 07:37:56,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 6.803571428571429) internal successors, (381), 56 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:37:56,209 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 390 transitions. [2021-11-07 07:37:56,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2021-11-07 07:37:56,210 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:56,210 INFO L513 BasicCegarLoop]: trace histogram [55, 55, 55, 55, 54, 54, 54, 1, 1] [2021-11-07 07:37:56,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2021-11-07 07:37:56,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-11-07 07:37:56,411 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:37:56,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:56,411 INFO L85 PathProgramCache]: Analyzing trace with hash 839710701, now seen corresponding path program 54 times [2021-11-07 07:37:56,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:37:56,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259158105] [2021-11-07 07:37:56,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:56,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:37:56,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:57,581 INFO L134 CoverageAnalysis]: Checked inductivity of 10287 backedges. 0 proven. 10287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:57,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:37:57,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259158105] [2021-11-07 07:37:57,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259158105] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:37:57,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431573818] [2021-11-07 07:37:57,581 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:37:57,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:37:57,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:57,582 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:37:57,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-11-07 07:38:03,741 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-07 07:38:03,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:03,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-07 07:38:03,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 10287 backedges. 0 proven. 10287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:04,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431573818] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:04,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:04,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2021-11-07 07:38:04,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076091037] [2021-11-07 07:38:04,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-07 07:38:04,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:04,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-07 07:38:04,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 07:38:04,616 INFO L87 Difference]: Start difference. First operand 390 states and 390 transitions. Second operand has 57 states, 56 states have (on average 6.857142857142857) internal successors, (384), 56 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:04,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:04,742 INFO L93 Difference]: Finished difference Result 394 states and 394 transitions. [2021-11-07 07:38:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-07 07:38:04,743 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 6.857142857142857) internal successors, (384), 56 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2021-11-07 07:38:04,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:04,743 INFO L225 Difference]: With dead ends: 394 [2021-11-07 07:38:04,743 INFO L226 Difference]: Without dead ends: 393 [2021-11-07 07:38:04,744 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 07:38:04,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2021-11-07 07:38:04,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2021-11-07 07:38:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 391 states have (on average 1.0051150895140666) internal successors, (393), 392 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:04,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 393 transitions. [2021-11-07 07:38:04,751 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 393 transitions. Word has length 384 [2021-11-07 07:38:04,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:04,751 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 393 transitions. [2021-11-07 07:38:04,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 6.857142857142857) internal successors, (384), 56 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:04,751 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 393 transitions. [2021-11-07 07:38:04,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-11-07 07:38:04,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:04,753 INFO L513 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 55, 55, 55, 1, 1] [2021-11-07 07:38:04,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:04,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-11-07 07:38:04,962 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:38:04,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash -237192143, now seen corresponding path program 55 times [2021-11-07 07:38:04,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:04,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859157198] [2021-11-07 07:38:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:04,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:05,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10505 backedges. 0 proven. 10505 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:06,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:06,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859157198] [2021-11-07 07:38:06,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859157198] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:06,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647693960] [2021-11-07 07:38:06,216 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:38:06,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:06,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:06,217 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:06,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-11-07 07:38:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:12,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-07 07:38:12,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:13,269 INFO L134 CoverageAnalysis]: Checked inductivity of 10505 backedges. 0 proven. 10505 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:13,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647693960] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:13,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:13,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2021-11-07 07:38:13,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077310013] [2021-11-07 07:38:13,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-07 07:38:13,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:13,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-07 07:38:13,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 07:38:13,271 INFO L87 Difference]: Start difference. First operand 393 states and 393 transitions. Second operand has 58 states, 57 states have (on average 6.807017543859649) internal successors, (388), 57 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:13,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:13,400 INFO L93 Difference]: Finished difference Result 399 states and 399 transitions. [2021-11-07 07:38:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-07 07:38:13,401 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 6.807017543859649) internal successors, (388), 57 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 388 [2021-11-07 07:38:13,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:13,402 INFO L225 Difference]: With dead ends: 399 [2021-11-07 07:38:13,402 INFO L226 Difference]: Without dead ends: 398 [2021-11-07 07:38:13,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 07:38:13,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-07 07:38:13,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2021-11-07 07:38:13,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 395 states have (on average 1.0050632911392405) internal successors, (397), 396 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:13,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 397 transitions. [2021-11-07 07:38:13,406 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 397 transitions. Word has length 388 [2021-11-07 07:38:13,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:13,406 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 397 transitions. [2021-11-07 07:38:13,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 6.807017543859649) internal successors, (388), 57 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:13,407 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 397 transitions. [2021-11-07 07:38:13,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2021-11-07 07:38:13,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:13,408 INFO L513 BasicCegarLoop]: trace histogram [56, 56, 56, 56, 55, 55, 55, 1, 1] [2021-11-07 07:38:13,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:13,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-11-07 07:38:13,608 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:38:13,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:13,609 INFO L85 PathProgramCache]: Analyzing trace with hash -969886435, now seen corresponding path program 55 times [2021-11-07 07:38:13,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:13,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678274298] [2021-11-07 07:38:13,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:13,609 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:14,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10670 backedges. 0 proven. 10670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:14,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:14,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678274298] [2021-11-07 07:38:14,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678274298] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:14,829 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398494637] [2021-11-07 07:38:14,829 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:38:14,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:14,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:14,844 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:14,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-11-07 07:38:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:21,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-07 07:38:21,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 10670 backedges. 0 proven. 10670 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:22,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398494637] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:22,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:22,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2021-11-07 07:38:22,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040571757] [2021-11-07 07:38:22,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-07 07:38:22,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-07 07:38:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 07:38:22,127 INFO L87 Difference]: Start difference. First operand 397 states and 397 transitions. Second operand has 58 states, 57 states have (on average 6.859649122807017) internal successors, (391), 57 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:22,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:22,305 INFO L93 Difference]: Finished difference Result 401 states and 401 transitions. [2021-11-07 07:38:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-07 07:38:22,306 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 6.859649122807017) internal successors, (391), 57 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 391 [2021-11-07 07:38:22,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:22,307 INFO L225 Difference]: With dead ends: 401 [2021-11-07 07:38:22,307 INFO L226 Difference]: Without dead ends: 400 [2021-11-07 07:38:22,308 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 07:38:22,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-11-07 07:38:22,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2021-11-07 07:38:22,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 398 states have (on average 1.0050251256281406) internal successors, (400), 399 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:22,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 400 transitions. [2021-11-07 07:38:22,315 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 400 transitions. Word has length 391 [2021-11-07 07:38:22,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:22,316 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 400 transitions. [2021-11-07 07:38:22,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 6.859649122807017) internal successors, (391), 57 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:22,317 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 400 transitions. [2021-11-07 07:38:22,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-11-07 07:38:22,318 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:22,319 INFO L513 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 56, 56, 1, 1] [2021-11-07 07:38:22,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:22,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-11-07 07:38:22,534 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:38:22,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:22,534 INFO L85 PathProgramCache]: Analyzing trace with hash 645816673, now seen corresponding path program 56 times [2021-11-07 07:38:22,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:22,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939282243] [2021-11-07 07:38:22,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:22,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 10892 backedges. 0 proven. 10892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:23,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:23,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939282243] [2021-11-07 07:38:23,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939282243] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:23,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434610332] [2021-11-07 07:38:23,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:38:23,780 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:23,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:23,781 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:23,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-11-07 07:38:30,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:38:30,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:30,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-07 07:38:30,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:31,101 INFO L134 CoverageAnalysis]: Checked inductivity of 10892 backedges. 0 proven. 10892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:31,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434610332] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:31,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:31,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2021-11-07 07:38:31,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791886491] [2021-11-07 07:38:31,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-07 07:38:31,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:31,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-07 07:38:31,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 07:38:31,103 INFO L87 Difference]: Start difference. First operand 400 states and 400 transitions. Second operand has 59 states, 58 states have (on average 6.810344827586207) internal successors, (395), 58 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:31,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:31,240 INFO L93 Difference]: Finished difference Result 406 states and 406 transitions. [2021-11-07 07:38:31,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-07 07:38:31,240 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 6.810344827586207) internal successors, (395), 58 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 395 [2021-11-07 07:38:31,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:31,241 INFO L225 Difference]: With dead ends: 406 [2021-11-07 07:38:31,241 INFO L226 Difference]: Without dead ends: 405 [2021-11-07 07:38:31,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 394 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 07:38:31,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-11-07 07:38:31,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 404. [2021-11-07 07:38:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 402 states have (on average 1.0049751243781095) internal successors, (404), 403 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 404 transitions. [2021-11-07 07:38:31,246 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 404 transitions. Word has length 395 [2021-11-07 07:38:31,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:31,246 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 404 transitions. [2021-11-07 07:38:31,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 6.810344827586207) internal successors, (395), 58 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:31,246 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 404 transitions. [2021-11-07 07:38:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2021-11-07 07:38:31,247 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:31,247 INFO L513 BasicCegarLoop]: trace histogram [57, 57, 57, 57, 56, 56, 56, 1, 1] [2021-11-07 07:38:31,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:31,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:31,448 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:38:31,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1928936979, now seen corresponding path program 56 times [2021-11-07 07:38:31,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:31,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617637221] [2021-11-07 07:38:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:31,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 11060 backedges. 0 proven. 11060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:32,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:32,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617637221] [2021-11-07 07:38:32,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617637221] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:32,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792742666] [2021-11-07 07:38:32,706 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:38:32,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:32,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:32,707 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:32,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-11-07 07:38:39,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:38:39,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:39,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-07 07:38:39,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 11060 backedges. 0 proven. 11060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:40,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792742666] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:40,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:40,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2021-11-07 07:38:40,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973201406] [2021-11-07 07:38:40,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-07 07:38:40,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:40,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-07 07:38:40,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 07:38:40,180 INFO L87 Difference]: Start difference. First operand 404 states and 404 transitions. Second operand has 59 states, 58 states have (on average 6.862068965517241) internal successors, (398), 58 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:40,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:40,414 INFO L93 Difference]: Finished difference Result 408 states and 408 transitions. [2021-11-07 07:38:40,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-07 07:38:40,415 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 6.862068965517241) internal successors, (398), 58 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 398 [2021-11-07 07:38:40,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:40,415 INFO L225 Difference]: With dead ends: 408 [2021-11-07 07:38:40,415 INFO L226 Difference]: Without dead ends: 407 [2021-11-07 07:38:40,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 07:38:40,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-11-07 07:38:40,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 407. [2021-11-07 07:38:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 405 states have (on average 1.0049382716049382) internal successors, (407), 406 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 407 transitions. [2021-11-07 07:38:40,420 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 407 transitions. Word has length 398 [2021-11-07 07:38:40,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:40,420 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 407 transitions. [2021-11-07 07:38:40,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 6.862068965517241) internal successors, (398), 58 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:40,420 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 407 transitions. [2021-11-07 07:38:40,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2021-11-07 07:38:40,422 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:40,422 INFO L513 BasicCegarLoop]: trace histogram [58, 57, 57, 57, 57, 57, 57, 1, 1] [2021-11-07 07:38:40,465 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2021-11-07 07:38:40,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:40,622 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:38:40,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:40,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1189185073, now seen corresponding path program 57 times [2021-11-07 07:38:40,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:40,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624697498] [2021-11-07 07:38:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:40,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:41,936 INFO L134 CoverageAnalysis]: Checked inductivity of 11286 backedges. 0 proven. 11286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:41,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:41,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624697498] [2021-11-07 07:38:41,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624697498] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:41,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306456259] [2021-11-07 07:38:41,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:38:41,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:41,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:41,938 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:41,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-11-07 07:38:48,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-07 07:38:48,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:48,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 07:38:48,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:49,571 INFO L134 CoverageAnalysis]: Checked inductivity of 11286 backedges. 0 proven. 11286 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:49,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306456259] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:49,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:49,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2021-11-07 07:38:49,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768654136] [2021-11-07 07:38:49,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-07 07:38:49,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:49,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-07 07:38:49,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 07:38:49,574 INFO L87 Difference]: Start difference. First operand 407 states and 407 transitions. Second operand has 60 states, 59 states have (on average 6.813559322033898) internal successors, (402), 59 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:49,724 INFO L93 Difference]: Finished difference Result 413 states and 413 transitions. [2021-11-07 07:38:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-07 07:38:49,725 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 6.813559322033898) internal successors, (402), 59 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 402 [2021-11-07 07:38:49,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:49,726 INFO L225 Difference]: With dead ends: 413 [2021-11-07 07:38:49,726 INFO L226 Difference]: Without dead ends: 412 [2021-11-07 07:38:49,726 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 401 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 07:38:49,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-11-07 07:38:49,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 411. [2021-11-07 07:38:49,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 409 states have (on average 1.0048899755501222) internal successors, (411), 410 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:49,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 411 transitions. [2021-11-07 07:38:49,730 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 411 transitions. Word has length 402 [2021-11-07 07:38:49,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:49,731 INFO L470 AbstractCegarLoop]: Abstraction has 411 states and 411 transitions. [2021-11-07 07:38:49,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 6.813559322033898) internal successors, (402), 59 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:49,731 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 411 transitions. [2021-11-07 07:38:49,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2021-11-07 07:38:49,732 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:49,732 INFO L513 BasicCegarLoop]: trace histogram [58, 58, 58, 58, 57, 57, 57, 1, 1] [2021-11-07 07:38:49,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:49,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118,114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:49,933 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:38:49,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:49,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2122296093, now seen corresponding path program 57 times [2021-11-07 07:38:49,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:49,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988304443] [2021-11-07 07:38:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:49,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 11457 backedges. 0 proven. 11457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:51,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:38:51,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988304443] [2021-11-07 07:38:51,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988304443] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:51,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630402411] [2021-11-07 07:38:51,254 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:38:51,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:38:51,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:38:51,255 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:38:51,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-11-07 07:38:58,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-07 07:38:58,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:58,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 758 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 07:38:58,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 11457 backedges. 0 proven. 11457 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:59,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630402411] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:38:59,192 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:59,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2021-11-07 07:38:59,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146063062] [2021-11-07 07:38:59,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-07 07:38:59,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:38:59,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-07 07:38:59,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 07:38:59,194 INFO L87 Difference]: Start difference. First operand 411 states and 411 transitions. Second operand has 60 states, 59 states have (on average 6.864406779661017) internal successors, (405), 59 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:59,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:59,328 INFO L93 Difference]: Finished difference Result 415 states and 415 transitions. [2021-11-07 07:38:59,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-07 07:38:59,328 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 6.864406779661017) internal successors, (405), 59 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 405 [2021-11-07 07:38:59,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:59,329 INFO L225 Difference]: With dead ends: 415 [2021-11-07 07:38:59,329 INFO L226 Difference]: Without dead ends: 414 [2021-11-07 07:38:59,330 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 07:38:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-11-07 07:38:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2021-11-07 07:38:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 412 states have (on average 1.0048543689320388) internal successors, (414), 413 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 414 transitions. [2021-11-07 07:38:59,334 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 414 transitions. Word has length 405 [2021-11-07 07:38:59,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:59,334 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 414 transitions. [2021-11-07 07:38:59,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 6.864406779661017) internal successors, (405), 59 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:38:59,334 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 414 transitions. [2021-11-07 07:38:59,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2021-11-07 07:38:59,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:59,335 INFO L513 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 58, 58, 1, 1] [2021-11-07 07:38:59,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:59,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable119 [2021-11-07 07:38:59,536 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:38:59,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:59,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1839048863, now seen corresponding path program 58 times [2021-11-07 07:38:59,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:38:59,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717698290] [2021-11-07 07:38:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:59,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:38:59,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:39:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 11687 backedges. 0 proven. 11687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:01,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:39:01,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717698290] [2021-11-07 07:39:01,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717698290] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:39:01,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046319497] [2021-11-07 07:39:01,032 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:39:01,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:39:01,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:39:01,033 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:39:01,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-11-07 07:39:07,920 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:39:07,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:39:07,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-07 07:39:07,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:39:08,908 INFO L134 CoverageAnalysis]: Checked inductivity of 11687 backedges. 0 proven. 11687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:08,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046319497] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:39:08,908 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:39:08,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2021-11-07 07:39:08,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132657423] [2021-11-07 07:39:08,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-11-07 07:39:08,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:39:08,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-11-07 07:39:08,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 07:39:08,910 INFO L87 Difference]: Start difference. First operand 414 states and 414 transitions. Second operand has 61 states, 60 states have (on average 6.816666666666666) internal successors, (409), 60 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:09,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:39:09,055 INFO L93 Difference]: Finished difference Result 420 states and 420 transitions. [2021-11-07 07:39:09,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-07 07:39:09,055 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 6.816666666666666) internal successors, (409), 60 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 409 [2021-11-07 07:39:09,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:39:09,056 INFO L225 Difference]: With dead ends: 420 [2021-11-07 07:39:09,056 INFO L226 Difference]: Without dead ends: 419 [2021-11-07 07:39:09,057 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 07:39:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-11-07 07:39:09,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 418. [2021-11-07 07:39:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 416 states have (on average 1.0048076923076923) internal successors, (418), 417 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:09,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 418 transitions. [2021-11-07 07:39:09,061 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 418 transitions. Word has length 409 [2021-11-07 07:39:09,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:39:09,062 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 418 transitions. [2021-11-07 07:39:09,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 6.816666666666666) internal successors, (409), 60 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:09,062 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 418 transitions. [2021-11-07 07:39:09,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2021-11-07 07:39:09,064 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:39:09,064 INFO L513 BasicCegarLoop]: trace histogram [59, 59, 59, 59, 58, 58, 58, 1, 1] [2021-11-07 07:39:09,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2021-11-07 07:39:09,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:39:09,286 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:39:09,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:39:09,286 INFO L85 PathProgramCache]: Analyzing trace with hash -501806099, now seen corresponding path program 58 times [2021-11-07 07:39:09,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:39:09,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131411082] [2021-11-07 07:39:09,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:39:09,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:39:09,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:39:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 11861 backedges. 0 proven. 11861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:10,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:39:10,824 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131411082] [2021-11-07 07:39:10,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131411082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:39:10,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007260568] [2021-11-07 07:39:10,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:39:10,825 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:39:10,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:39:10,825 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:39:10,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-11-07 07:39:17,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:39:17,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:39:17,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-07 07:39:17,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:39:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 11861 backedges. 0 proven. 11861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:18,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007260568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:39:18,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:39:18,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2021-11-07 07:39:18,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689691697] [2021-11-07 07:39:18,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-11-07 07:39:18,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:39:18,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-11-07 07:39:18,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 07:39:18,965 INFO L87 Difference]: Start difference. First operand 418 states and 418 transitions. Second operand has 61 states, 60 states have (on average 6.866666666666666) internal successors, (412), 60 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:19,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:39:19,110 INFO L93 Difference]: Finished difference Result 422 states and 422 transitions. [2021-11-07 07:39:19,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-07 07:39:19,111 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 6.866666666666666) internal successors, (412), 60 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 412 [2021-11-07 07:39:19,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:39:19,112 INFO L225 Difference]: With dead ends: 422 [2021-11-07 07:39:19,112 INFO L226 Difference]: Without dead ends: 421 [2021-11-07 07:39:19,112 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 07:39:19,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-07 07:39:19,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2021-11-07 07:39:19,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 419 states have (on average 1.0047732696897376) internal successors, (421), 420 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:19,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 421 transitions. [2021-11-07 07:39:19,116 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 421 transitions. Word has length 412 [2021-11-07 07:39:19,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:39:19,117 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 421 transitions. [2021-11-07 07:39:19,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 6.866666666666666) internal successors, (412), 60 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:19,117 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 421 transitions. [2021-11-07 07:39:19,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2021-11-07 07:39:19,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:39:19,118 INFO L513 BasicCegarLoop]: trace histogram [60, 59, 59, 59, 59, 59, 59, 1, 1] [2021-11-07 07:39:19,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2021-11-07 07:39:19,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121,117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:39:19,319 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:39:19,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:39:19,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1497575375, now seen corresponding path program 59 times [2021-11-07 07:39:19,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:39:19,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993901749] [2021-11-07 07:39:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:39:19,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:39:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:39:20,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12095 backedges. 0 proven. 12095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:20,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:39:20,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993901749] [2021-11-07 07:39:20,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993901749] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:39:20,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448458199] [2021-11-07 07:39:20,676 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:39:20,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:39:20,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:39:20,677 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:39:20,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-11-07 07:39:28,030 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-11-07 07:39:28,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:39:28,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-07 07:39:28,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:39:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12095 backedges. 0 proven. 12095 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:28,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448458199] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:39:28,994 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:39:28,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2021-11-07 07:39:28,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897654495] [2021-11-07 07:39:28,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-07 07:39:28,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:39:28,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-07 07:39:28,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-11-07 07:39:28,996 INFO L87 Difference]: Start difference. First operand 421 states and 421 transitions. Second operand has 62 states, 61 states have (on average 6.819672131147541) internal successors, (416), 61 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:29,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:39:29,144 INFO L93 Difference]: Finished difference Result 427 states and 427 transitions. [2021-11-07 07:39:29,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-07 07:39:29,144 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 6.819672131147541) internal successors, (416), 61 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 416 [2021-11-07 07:39:29,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:39:29,145 INFO L225 Difference]: With dead ends: 427 [2021-11-07 07:39:29,146 INFO L226 Difference]: Without dead ends: 426 [2021-11-07 07:39:29,146 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-11-07 07:39:29,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2021-11-07 07:39:29,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 425. [2021-11-07 07:39:29,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 423 states have (on average 1.0047281323877069) internal successors, (425), 424 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:29,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 425 transitions. [2021-11-07 07:39:29,152 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 425 transitions. Word has length 416 [2021-11-07 07:39:29,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:39:29,152 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 425 transitions. [2021-11-07 07:39:29,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 6.819672131147541) internal successors, (416), 61 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:29,152 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 425 transitions. [2021-11-07 07:39:29,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 420 [2021-11-07 07:39:29,153 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:39:29,153 INFO L513 BasicCegarLoop]: trace histogram [60, 60, 60, 60, 59, 59, 59, 1, 1] [2021-11-07 07:39:29,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Ended with exit code 0 [2021-11-07 07:39:29,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-11-07 07:39:29,354 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:39:29,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:39:29,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1852317981, now seen corresponding path program 59 times [2021-11-07 07:39:29,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:39:29,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176795190] [2021-11-07 07:39:29,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:39:29,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:39:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:39:30,963 INFO L134 CoverageAnalysis]: Checked inductivity of 12272 backedges. 0 proven. 12272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:30,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:39:30,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176795190] [2021-11-07 07:39:30,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176795190] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:39:30,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737395917] [2021-11-07 07:39:30,963 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:39:30,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:39:30,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:39:30,964 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:39:30,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-11-07 07:39:38,285 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-11-07 07:39:38,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:39:38,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-07 07:39:38,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:39:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 12272 backedges. 0 proven. 12272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:39,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737395917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:39:39,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:39:39,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2021-11-07 07:39:39,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059799661] [2021-11-07 07:39:39,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-07 07:39:39,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:39:39,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-07 07:39:39,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-11-07 07:39:39,349 INFO L87 Difference]: Start difference. First operand 425 states and 425 transitions. Second operand has 62 states, 61 states have (on average 6.868852459016393) internal successors, (419), 61 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:39,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:39:39,503 INFO L93 Difference]: Finished difference Result 429 states and 429 transitions. [2021-11-07 07:39:39,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-07 07:39:39,503 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 6.868852459016393) internal successors, (419), 61 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 419 [2021-11-07 07:39:39,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:39:39,504 INFO L225 Difference]: With dead ends: 429 [2021-11-07 07:39:39,504 INFO L226 Difference]: Without dead ends: 428 [2021-11-07 07:39:39,504 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 418 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-11-07 07:39:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-11-07 07:39:39,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2021-11-07 07:39:39,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 426 states have (on average 1.0046948356807512) internal successors, (428), 427 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:39,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2021-11-07 07:39:39,509 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 419 [2021-11-07 07:39:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:39:39,509 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2021-11-07 07:39:39,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 6.868852459016393) internal successors, (419), 61 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:39,509 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2021-11-07 07:39:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2021-11-07 07:39:39,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:39:39,510 INFO L513 BasicCegarLoop]: trace histogram [61, 60, 60, 60, 60, 60, 60, 1, 1] [2021-11-07 07:39:39,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2021-11-07 07:39:39,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-11-07 07:39:39,711 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:39:39,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:39:39,711 INFO L85 PathProgramCache]: Analyzing trace with hash -853553823, now seen corresponding path program 60 times [2021-11-07 07:39:39,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:39:39,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95078056] [2021-11-07 07:39:39,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:39:39,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:39:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:39:41,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12510 backedges. 0 proven. 12510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:41,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:39:41,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95078056] [2021-11-07 07:39:41,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95078056] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:39:41,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754225704] [2021-11-07 07:39:41,244 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:39:41,244 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:39:41,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:39:41,245 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:39:41,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-11-07 07:39:48,801 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-11-07 07:39:48,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:39:48,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-07 07:39:48,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:39:49,826 INFO L134 CoverageAnalysis]: Checked inductivity of 12510 backedges. 0 proven. 12510 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:49,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754225704] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:39:49,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:39:49,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2021-11-07 07:39:49,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850446828] [2021-11-07 07:39:49,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-07 07:39:49,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:39:49,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-07 07:39:49,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-11-07 07:39:49,828 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand has 63 states, 62 states have (on average 6.82258064516129) internal successors, (423), 62 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:49,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:39:49,978 INFO L93 Difference]: Finished difference Result 434 states and 434 transitions. [2021-11-07 07:39:49,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-07 07:39:49,978 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 6.82258064516129) internal successors, (423), 62 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 423 [2021-11-07 07:39:49,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:39:49,979 INFO L225 Difference]: With dead ends: 434 [2021-11-07 07:39:49,979 INFO L226 Difference]: Without dead ends: 433 [2021-11-07 07:39:49,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 422 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-11-07 07:39:49,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-11-07 07:39:49,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 432. [2021-11-07 07:39:49,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 430 states have (on average 1.0046511627906978) internal successors, (432), 431 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:49,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 432 transitions. [2021-11-07 07:39:49,984 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 432 transitions. Word has length 423 [2021-11-07 07:39:49,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:39:49,984 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 432 transitions. [2021-11-07 07:39:49,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 6.82258064516129) internal successors, (423), 62 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:39:49,984 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 432 transitions. [2021-11-07 07:39:49,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2021-11-07 07:39:49,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:39:49,985 INFO L513 BasicCegarLoop]: trace histogram [61, 61, 61, 61, 60, 60, 60, 1, 1] [2021-11-07 07:39:50,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2021-11-07 07:39:50,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-11-07 07:39:50,186 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:39:50,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:39:50,186 INFO L85 PathProgramCache]: Analyzing trace with hash -2015504915, now seen corresponding path program 60 times [2021-11-07 07:39:50,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:39:50,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025829789] [2021-11-07 07:39:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:39:50,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:39:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:39:51,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12690 backedges. 0 proven. 12690 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:51,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:39:51,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025829789] [2021-11-07 07:39:51,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025829789] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:39:51,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597219860] [2021-11-07 07:39:51,765 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:39:51,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:39:51,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:39:51,766 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:39:51,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-11-07 07:39:59,496 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-11-07 07:39:59,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:39:59,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-07 07:39:59,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:40:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12690 backedges. 0 proven. 12690 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:40:00,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597219860] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:40:00,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:40:00,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2021-11-07 07:40:00,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466411678] [2021-11-07 07:40:00,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-07 07:40:00,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:40:00,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-07 07:40:00,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-11-07 07:40:00,517 INFO L87 Difference]: Start difference. First operand 432 states and 432 transitions. Second operand has 63 states, 62 states have (on average 6.870967741935484) internal successors, (426), 62 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:00,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:40:00,691 INFO L93 Difference]: Finished difference Result 436 states and 436 transitions. [2021-11-07 07:40:00,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-07 07:40:00,692 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 6.870967741935484) internal successors, (426), 62 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 426 [2021-11-07 07:40:00,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:40:00,692 INFO L225 Difference]: With dead ends: 436 [2021-11-07 07:40:00,692 INFO L226 Difference]: Without dead ends: 435 [2021-11-07 07:40:00,693 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-11-07 07:40:00,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-11-07 07:40:00,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 435. [2021-11-07 07:40:00,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 433 states have (on average 1.0046189376443417) internal successors, (435), 434 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 435 transitions. [2021-11-07 07:40:00,697 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 435 transitions. Word has length 426 [2021-11-07 07:40:00,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:40:00,698 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 435 transitions. [2021-11-07 07:40:00,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 6.870967741935484) internal successors, (426), 62 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:00,698 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 435 transitions. [2021-11-07 07:40:00,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2021-11-07 07:40:00,699 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:40:00,699 INFO L513 BasicCegarLoop]: trace histogram [62, 61, 61, 61, 61, 61, 61, 1, 1] [2021-11-07 07:40:00,744 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Ended with exit code 0 [2021-11-07 07:40:00,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-11-07 07:40:00,900 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:40:00,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:40:00,900 INFO L85 PathProgramCache]: Analyzing trace with hash 403610161, now seen corresponding path program 61 times [2021-11-07 07:40:00,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:40:00,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651826195] [2021-11-07 07:40:00,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:40:00,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:40:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:40:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12932 backedges. 0 proven. 12932 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:40:02,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:40:02,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651826195] [2021-11-07 07:40:02,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651826195] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:40:02,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427731198] [2021-11-07 07:40:02,600 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:40:02,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:40:02,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:40:02,602 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:40:02,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-11-07 07:40:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:40:10,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-07 07:40:10,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:40:11,611 INFO L134 CoverageAnalysis]: Checked inductivity of 12932 backedges. 0 proven. 12932 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:40:11,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427731198] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:40:11,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:40:11,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2021-11-07 07:40:11,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705366504] [2021-11-07 07:40:11,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 07:40:11,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:40:11,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 07:40:11,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 07:40:11,613 INFO L87 Difference]: Start difference. First operand 435 states and 435 transitions. Second operand has 64 states, 63 states have (on average 6.825396825396825) internal successors, (430), 63 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:11,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:40:11,768 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2021-11-07 07:40:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 07:40:11,769 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 6.825396825396825) internal successors, (430), 63 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 430 [2021-11-07 07:40:11,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:40:11,769 INFO L225 Difference]: With dead ends: 441 [2021-11-07 07:40:11,769 INFO L226 Difference]: Without dead ends: 440 [2021-11-07 07:40:11,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 07:40:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-11-07 07:40:11,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 439. [2021-11-07 07:40:11,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 437 states have (on average 1.0045766590389016) internal successors, (439), 438 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:11,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 439 transitions. [2021-11-07 07:40:11,775 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 439 transitions. Word has length 430 [2021-11-07 07:40:11,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:40:11,775 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 439 transitions. [2021-11-07 07:40:11,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 6.825396825396825) internal successors, (430), 63 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:11,775 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 439 transitions. [2021-11-07 07:40:11,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2021-11-07 07:40:11,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:40:11,777 INFO L513 BasicCegarLoop]: trace histogram [62, 62, 62, 62, 61, 61, 61, 1, 1] [2021-11-07 07:40:11,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2021-11-07 07:40:11,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:40:11,982 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:40:11,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:40:11,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1958078691, now seen corresponding path program 61 times [2021-11-07 07:40:11,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:40:11,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099146664] [2021-11-07 07:40:11,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:40:11,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:40:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:40:13,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13115 backedges. 0 proven. 13115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:40:13,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:40:13,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099146664] [2021-11-07 07:40:13,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099146664] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:40:13,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020211545] [2021-11-07 07:40:13,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:40:13,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:40:13,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:40:13,689 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:40:13,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-11-07 07:40:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:40:21,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-07 07:40:21,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:40:22,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13115 backedges. 0 proven. 13115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:40:22,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020211545] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:40:22,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:40:22,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2021-11-07 07:40:22,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952985052] [2021-11-07 07:40:22,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 07:40:22,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:40:22,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 07:40:22,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 07:40:22,817 INFO L87 Difference]: Start difference. First operand 439 states and 439 transitions. Second operand has 64 states, 63 states have (on average 6.873015873015873) internal successors, (433), 63 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:23,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:40:23,005 INFO L93 Difference]: Finished difference Result 443 states and 443 transitions. [2021-11-07 07:40:23,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 07:40:23,005 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 6.873015873015873) internal successors, (433), 63 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 433 [2021-11-07 07:40:23,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:40:23,007 INFO L225 Difference]: With dead ends: 443 [2021-11-07 07:40:23,007 INFO L226 Difference]: Without dead ends: 442 [2021-11-07 07:40:23,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 07:40:23,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-11-07 07:40:23,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-11-07 07:40:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 440 states have (on average 1.0045454545454546) internal successors, (442), 441 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:23,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 442 transitions. [2021-11-07 07:40:23,015 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 442 transitions. Word has length 433 [2021-11-07 07:40:23,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:40:23,015 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 442 transitions. [2021-11-07 07:40:23,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 6.873015873015873) internal successors, (433), 63 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:23,016 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 442 transitions. [2021-11-07 07:40:23,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2021-11-07 07:40:23,018 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:40:23,018 INFO L513 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 62, 62, 1, 1] [2021-11-07 07:40:23,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2021-11-07 07:40:23,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:40:23,222 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:40:23,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:40:23,222 INFO L85 PathProgramCache]: Analyzing trace with hash 471253857, now seen corresponding path program 62 times [2021-11-07 07:40:23,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:40:23,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183412313] [2021-11-07 07:40:23,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:40:23,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:40:23,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:40:25,132 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:40:25,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:40:25,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183412313] [2021-11-07 07:40:25,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183412313] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:40:25,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573801808] [2021-11-07 07:40:25,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:40:25,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:40:25,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:40:25,134 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:40:25,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-11-07 07:40:33,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:40:33,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:40:33,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-07 07:40:33,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:40:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13361 backedges. 0 proven. 13361 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:40:34,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573801808] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:40:34,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:40:34,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2021-11-07 07:40:34,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405121574] [2021-11-07 07:40:34,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-07 07:40:34,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:40:34,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-07 07:40:34,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 07:40:34,570 INFO L87 Difference]: Start difference. First operand 442 states and 442 transitions. Second operand has 65 states, 64 states have (on average 6.828125) internal successors, (437), 64 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:34,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:40:34,739 INFO L93 Difference]: Finished difference Result 448 states and 448 transitions. [2021-11-07 07:40:34,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-07 07:40:34,740 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 6.828125) internal successors, (437), 64 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 437 [2021-11-07 07:40:34,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:40:34,741 INFO L225 Difference]: With dead ends: 448 [2021-11-07 07:40:34,741 INFO L226 Difference]: Without dead ends: 447 [2021-11-07 07:40:34,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 436 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 07:40:34,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-07 07:40:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 446. [2021-11-07 07:40:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 1.0045045045045045) internal successors, (446), 445 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2021-11-07 07:40:34,747 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 437 [2021-11-07 07:40:34,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:40:34,747 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2021-11-07 07:40:34,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 6.828125) internal successors, (437), 64 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:34,747 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2021-11-07 07:40:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2021-11-07 07:40:34,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:40:34,749 INFO L513 BasicCegarLoop]: trace histogram [63, 63, 63, 63, 62, 62, 62, 1, 1] [2021-11-07 07:40:34,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Ended with exit code 0 [2021-11-07 07:40:34,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-11-07 07:40:34,949 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:40:34,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:40:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1124392979, now seen corresponding path program 62 times [2021-11-07 07:40:34,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:40:34,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967651552] [2021-11-07 07:40:34,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:40:34,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:40:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:40:36,823 INFO L134 CoverageAnalysis]: Checked inductivity of 13547 backedges. 0 proven. 13547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:40:36,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:40:36,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967651552] [2021-11-07 07:40:36,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967651552] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:40:36,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993639401] [2021-11-07 07:40:36,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:40:36,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:40:36,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:40:36,824 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:40:36,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-11-07 07:40:45,373 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:40:45,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:40:45,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-07 07:40:45,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:40:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 13547 backedges. 0 proven. 13547 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:40:46,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993639401] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:40:46,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:40:46,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2021-11-07 07:40:46,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015704465] [2021-11-07 07:40:46,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-07 07:40:46,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:40:46,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-07 07:40:46,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 07:40:46,517 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand has 65 states, 64 states have (on average 6.875) internal successors, (440), 64 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:46,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:40:46,710 INFO L93 Difference]: Finished difference Result 450 states and 450 transitions. [2021-11-07 07:40:46,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-07 07:40:46,710 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 6.875) internal successors, (440), 64 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 440 [2021-11-07 07:40:46,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:40:46,711 INFO L225 Difference]: With dead ends: 450 [2021-11-07 07:40:46,711 INFO L226 Difference]: Without dead ends: 449 [2021-11-07 07:40:46,712 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 07:40:46,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-11-07 07:40:46,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2021-11-07 07:40:46,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 447 states have (on average 1.0044742729306488) internal successors, (449), 448 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 449 transitions. [2021-11-07 07:40:46,718 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 449 transitions. Word has length 440 [2021-11-07 07:40:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:40:46,719 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 449 transitions. [2021-11-07 07:40:46,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 6.875) internal successors, (440), 64 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 449 transitions. [2021-11-07 07:40:46,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 445 [2021-11-07 07:40:46,723 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:40:46,723 INFO L513 BasicCegarLoop]: trace histogram [64, 63, 63, 63, 63, 63, 63, 1, 1] [2021-11-07 07:40:46,796 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2021-11-07 07:40:46,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-11-07 07:40:46,950 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:40:46,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:40:46,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1988697039, now seen corresponding path program 63 times [2021-11-07 07:40:46,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:40:46,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142991585] [2021-11-07 07:40:46,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:40:46,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:40:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:40:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 13797 backedges. 0 proven. 13797 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:40:48,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:40:48,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142991585] [2021-11-07 07:40:48,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142991585] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:40:48,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506565999] [2021-11-07 07:40:48,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:40:48,909 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:40:48,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:40:48,917 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:40:48,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-11-07 07:40:57,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-11-07 07:40:57,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:40:57,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-07 07:40:57,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:40:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 13797 backedges. 0 proven. 13797 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:40:58,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506565999] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:40:58,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:40:58,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2021-11-07 07:40:58,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094292289] [2021-11-07 07:40:58,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 07:40:58,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:40:58,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 07:40:58,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 07:40:58,865 INFO L87 Difference]: Start difference. First operand 449 states and 449 transitions. Second operand has 66 states, 65 states have (on average 6.8307692307692305) internal successors, (444), 65 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:59,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:40:59,037 INFO L93 Difference]: Finished difference Result 455 states and 455 transitions. [2021-11-07 07:40:59,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 07:40:59,038 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 6.8307692307692305) internal successors, (444), 65 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 444 [2021-11-07 07:40:59,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:40:59,039 INFO L225 Difference]: With dead ends: 455 [2021-11-07 07:40:59,039 INFO L226 Difference]: Without dead ends: 454 [2021-11-07 07:40:59,039 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 07:40:59,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-11-07 07:40:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 453. [2021-11-07 07:40:59,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 451 states have (on average 1.0044345898004434) internal successors, (453), 452 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:59,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 453 transitions. [2021-11-07 07:40:59,044 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 453 transitions. Word has length 444 [2021-11-07 07:40:59,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:40:59,044 INFO L470 AbstractCegarLoop]: Abstraction has 453 states and 453 transitions. [2021-11-07 07:40:59,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 6.8307692307692305) internal successors, (444), 65 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:40:59,045 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 453 transitions. [2021-11-07 07:40:59,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2021-11-07 07:40:59,046 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:40:59,046 INFO L513 BasicCegarLoop]: trace histogram [64, 64, 64, 64, 63, 63, 63, 1, 1] [2021-11-07 07:40:59,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2021-11-07 07:40:59,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:40:59,250 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:40:59,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:40:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash -494564067, now seen corresponding path program 63 times [2021-11-07 07:40:59,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:40:59,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086227407] [2021-11-07 07:40:59,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:40:59,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:40:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:41:01,167 INFO L134 CoverageAnalysis]: Checked inductivity of 13986 backedges. 0 proven. 13986 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:41:01,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:41:01,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086227407] [2021-11-07 07:41:01,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086227407] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:41:01,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097321628] [2021-11-07 07:41:01,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:41:01,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:41:01,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:41:01,168 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:41:01,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-11-07 07:41:10,018 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-11-07 07:41:10,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:41:10,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-07 07:41:10,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:41:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13986 backedges. 0 proven. 13986 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:41:11,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097321628] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:41:11,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:41:11,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2021-11-07 07:41:11,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043013726] [2021-11-07 07:41:11,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 07:41:11,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:41:11,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 07:41:11,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 07:41:11,095 INFO L87 Difference]: Start difference. First operand 453 states and 453 transitions. Second operand has 66 states, 65 states have (on average 6.876923076923077) internal successors, (447), 65 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:11,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:41:11,287 INFO L93 Difference]: Finished difference Result 457 states and 457 transitions. [2021-11-07 07:41:11,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 07:41:11,287 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 6.876923076923077) internal successors, (447), 65 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 447 [2021-11-07 07:41:11,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:41:11,288 INFO L225 Difference]: With dead ends: 457 [2021-11-07 07:41:11,289 INFO L226 Difference]: Without dead ends: 456 [2021-11-07 07:41:11,289 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 446 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2145, Invalid=2145, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 07:41:11,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-07 07:41:11,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2021-11-07 07:41:11,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 454 states have (on average 1.0044052863436124) internal successors, (456), 455 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:11,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 456 transitions. [2021-11-07 07:41:11,295 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 456 transitions. Word has length 447 [2021-11-07 07:41:11,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:41:11,295 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 456 transitions. [2021-11-07 07:41:11,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 6.876923076923077) internal successors, (447), 65 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:11,296 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 456 transitions. [2021-11-07 07:41:11,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2021-11-07 07:41:11,299 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:41:11,299 INFO L513 BasicCegarLoop]: trace histogram [65, 64, 64, 64, 64, 64, 64, 1, 1] [2021-11-07 07:41:11,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2021-11-07 07:41:11,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131,127 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:41:11,514 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:41:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:41:11,514 INFO L85 PathProgramCache]: Analyzing trace with hash -593020575, now seen corresponding path program 64 times [2021-11-07 07:41:11,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:41:11,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227538792] [2021-11-07 07:41:11,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:41:11,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:41:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:41:13,479 INFO L134 CoverageAnalysis]: Checked inductivity of 14240 backedges. 0 proven. 14240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:41:13,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:41:13,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227538792] [2021-11-07 07:41:13,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227538792] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:41:13,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179923393] [2021-11-07 07:41:13,480 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:41:13,480 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:41:13,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:41:13,481 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:41:13,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2021-11-07 07:41:22,198 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:41:22,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:41:22,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-07 07:41:22,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:41:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 14240 backedges. 0 proven. 14240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:41:23,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179923393] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:41:23,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:41:23,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2021-11-07 07:41:23,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398829866] [2021-11-07 07:41:23,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-07 07:41:23,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:41:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-07 07:41:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 07:41:23,474 INFO L87 Difference]: Start difference. First operand 456 states and 456 transitions. Second operand has 67 states, 66 states have (on average 6.833333333333333) internal successors, (451), 66 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:41:23,652 INFO L93 Difference]: Finished difference Result 462 states and 462 transitions. [2021-11-07 07:41:23,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-07 07:41:23,653 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 6.833333333333333) internal successors, (451), 66 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 451 [2021-11-07 07:41:23,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:41:23,654 INFO L225 Difference]: With dead ends: 462 [2021-11-07 07:41:23,654 INFO L226 Difference]: Without dead ends: 461 [2021-11-07 07:41:23,654 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 07:41:23,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-07 07:41:23,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 460. [2021-11-07 07:41:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 458 states have (on average 1.0043668122270741) internal successors, (460), 459 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:23,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 460 transitions. [2021-11-07 07:41:23,659 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 460 transitions. Word has length 451 [2021-11-07 07:41:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:41:23,659 INFO L470 AbstractCegarLoop]: Abstraction has 460 states and 460 transitions. [2021-11-07 07:41:23,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 6.833333333333333) internal successors, (451), 66 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:23,660 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 460 transitions. [2021-11-07 07:41:23,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2021-11-07 07:41:23,661 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:41:23,661 INFO L513 BasicCegarLoop]: trace histogram [65, 65, 65, 65, 64, 64, 64, 1, 1] [2021-11-07 07:41:23,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Forceful destruction successful, exit code 0 [2021-11-07 07:41:23,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 128 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable132 [2021-11-07 07:41:23,862 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:41:23,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:41:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1475417619, now seen corresponding path program 64 times [2021-11-07 07:41:23,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:41:23,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77847425] [2021-11-07 07:41:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:41:23,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:41:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:41:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 14432 backedges. 0 proven. 14432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:41:26,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:41:26,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77847425] [2021-11-07 07:41:26,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77847425] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:41:26,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605751206] [2021-11-07 07:41:26,110 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:41:26,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:41:26,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:41:26,111 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:41:26,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2021-11-07 07:41:34,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:41:34,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:41:34,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 66 conjunts are in the unsatisfiable core [2021-11-07 07:41:34,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:41:36,071 INFO L134 CoverageAnalysis]: Checked inductivity of 14432 backedges. 0 proven. 14432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:41:36,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605751206] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:41:36,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:41:36,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 65 [2021-11-07 07:41:36,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245747039] [2021-11-07 07:41:36,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2021-11-07 07:41:36,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:41:36,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-11-07 07:41:36,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 07:41:36,074 INFO L87 Difference]: Start difference. First operand 460 states and 460 transitions. Second operand has 67 states, 66 states have (on average 6.878787878787879) internal successors, (454), 66 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:36,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:41:36,247 INFO L93 Difference]: Finished difference Result 464 states and 464 transitions. [2021-11-07 07:41:36,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-07 07:41:36,247 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 6.878787878787879) internal successors, (454), 66 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 454 [2021-11-07 07:41:36,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:41:36,248 INFO L225 Difference]: With dead ends: 464 [2021-11-07 07:41:36,248 INFO L226 Difference]: Without dead ends: 463 [2021-11-07 07:41:36,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 518 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 07:41:36,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-11-07 07:41:36,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2021-11-07 07:41:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.0043383947939262) internal successors, (463), 462 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 463 transitions. [2021-11-07 07:41:36,254 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 463 transitions. Word has length 454 [2021-11-07 07:41:36,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:41:36,254 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 463 transitions. [2021-11-07 07:41:36,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 6.878787878787879) internal successors, (454), 66 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:36,254 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 463 transitions. [2021-11-07 07:41:36,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 459 [2021-11-07 07:41:36,256 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:41:36,256 INFO L513 BasicCegarLoop]: trace histogram [66, 65, 65, 65, 65, 65, 65, 1, 1] [2021-11-07 07:41:36,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2021-11-07 07:41:36,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2021-11-07 07:41:36,456 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:41:36,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:41:36,457 INFO L85 PathProgramCache]: Analyzing trace with hash -778719695, now seen corresponding path program 65 times [2021-11-07 07:41:36,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:41:36,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833461067] [2021-11-07 07:41:36,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:41:36,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:41:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:41:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 14690 backedges. 0 proven. 14690 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:41:38,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:41:38,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833461067] [2021-11-07 07:41:38,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833461067] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:41:38,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778716501] [2021-11-07 07:41:38,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:41:38,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:41:38,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:41:38,078 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:41:38,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2021-11-07 07:41:47,537 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-11-07 07:41:47,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:41:47,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-07 07:41:47,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:41:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 14690 backedges. 0 proven. 14690 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:41:48,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778716501] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:41:48,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:41:48,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2021-11-07 07:41:48,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240587473] [2021-11-07 07:41:48,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-07 07:41:48,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:41:48,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-07 07:41:48,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-11-07 07:41:48,629 INFO L87 Difference]: Start difference. First operand 463 states and 463 transitions. Second operand has 68 states, 67 states have (on average 6.835820895522388) internal successors, (458), 67 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:48,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:41:48,843 INFO L93 Difference]: Finished difference Result 469 states and 469 transitions. [2021-11-07 07:41:48,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-07 07:41:48,844 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 6.835820895522388) internal successors, (458), 67 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 458 [2021-11-07 07:41:48,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:41:48,845 INFO L225 Difference]: With dead ends: 469 [2021-11-07 07:41:48,845 INFO L226 Difference]: Without dead ends: 468 [2021-11-07 07:41:48,845 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 457 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-11-07 07:41:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-11-07 07:41:48,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 467. [2021-11-07 07:41:48,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 465 states have (on average 1.0043010752688173) internal successors, (467), 466 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:48,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 467 transitions. [2021-11-07 07:41:48,851 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 467 transitions. Word has length 458 [2021-11-07 07:41:48,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:41:48,851 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 467 transitions. [2021-11-07 07:41:48,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 6.835820895522388) internal successors, (458), 67 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:41:48,851 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 467 transitions. [2021-11-07 07:41:48,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2021-11-07 07:41:48,853 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:41:48,853 INFO L513 BasicCegarLoop]: trace histogram [66, 66, 66, 66, 65, 65, 65, 1, 1] [2021-11-07 07:41:48,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Forceful destruction successful, exit code 0 [2021-11-07 07:41:49,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,130 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:41:49,053 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:41:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:41:49,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1720024291, now seen corresponding path program 65 times [2021-11-07 07:41:49,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:41:49,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104465860] [2021-11-07 07:41:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:41:49,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:41:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:41:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 0 proven. 14885 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:41:51,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:41:51,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104465860] [2021-11-07 07:41:51,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104465860] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:41:51,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595727549] [2021-11-07 07:41:51,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:41:51,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:41:51,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:41:51,221 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:41:51,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2021-11-07 07:42:00,677 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-11-07 07:42:00,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:42:00,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-07 07:42:00,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:42:01,752 INFO L134 CoverageAnalysis]: Checked inductivity of 14885 backedges. 0 proven. 14885 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:42:01,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595727549] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:42:01,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:42:01,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 66 [2021-11-07 07:42:01,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116434280] [2021-11-07 07:42:01,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-07 07:42:01,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:42:01,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-07 07:42:01,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-11-07 07:42:01,754 INFO L87 Difference]: Start difference. First operand 467 states and 467 transitions. Second operand has 68 states, 67 states have (on average 6.880597014925373) internal successors, (461), 67 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:42:01,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:42:01,976 INFO L93 Difference]: Finished difference Result 471 states and 471 transitions. [2021-11-07 07:42:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-07 07:42:01,977 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 6.880597014925373) internal successors, (461), 67 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 461 [2021-11-07 07:42:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:42:01,977 INFO L225 Difference]: With dead ends: 471 [2021-11-07 07:42:01,977 INFO L226 Difference]: Without dead ends: 470 [2021-11-07 07:42:01,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 460 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2278, Invalid=2278, Unknown=0, NotChecked=0, Total=4556 [2021-11-07 07:42:01,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-07 07:42:01,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2021-11-07 07:42:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 468 states have (on average 1.0042735042735043) internal successors, (470), 469 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:42:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 470 transitions. [2021-11-07 07:42:01,982 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 470 transitions. Word has length 461 [2021-11-07 07:42:01,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:42:01,982 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 470 transitions. [2021-11-07 07:42:01,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 6.880597014925373) internal successors, (461), 67 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:42:01,983 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 470 transitions. [2021-11-07 07:42:01,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2021-11-07 07:42:01,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:42:01,984 INFO L513 BasicCegarLoop]: trace histogram [67, 66, 66, 66, 66, 66, 66, 1, 1] [2021-11-07 07:42:02,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Forceful destruction successful, exit code 0 [2021-11-07 07:42:02,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 131 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable135 [2021-11-07 07:42:02,185 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:42:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:42:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash -2077151391, now seen corresponding path program 66 times [2021-11-07 07:42:02,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:42:02,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313972809] [2021-11-07 07:42:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:42:02,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:42:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:42:04,028 INFO L134 CoverageAnalysis]: Checked inductivity of 15147 backedges. 0 proven. 15147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:42:04,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:42:04,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313972809] [2021-11-07 07:42:04,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313972809] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:42:04,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094268341] [2021-11-07 07:42:04,028 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:42:04,029 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:42:04,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:42:04,029 INFO L229 MonitoredProcess]: Starting monitored process 132 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:42:04,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2021-11-07 07:42:14,198 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2021-11-07 07:42:14,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:42:14,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 68 conjunts are in the unsatisfiable core [2021-11-07 07:42:14,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:42:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 15147 backedges. 0 proven. 15147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:42:15,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094268341] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:42:15,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:42:15,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 67 [2021-11-07 07:42:15,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681996249] [2021-11-07 07:42:15,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2021-11-07 07:42:15,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:42:15,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-11-07 07:42:15,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-11-07 07:42:15,309 INFO L87 Difference]: Start difference. First operand 470 states and 470 transitions. Second operand has 69 states, 68 states have (on average 6.838235294117647) internal successors, (465), 68 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:42:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:42:15,479 INFO L93 Difference]: Finished difference Result 476 states and 476 transitions. [2021-11-07 07:42:15,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-07 07:42:15,480 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 6.838235294117647) internal successors, (465), 68 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 465 [2021-11-07 07:42:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:42:15,480 INFO L225 Difference]: With dead ends: 476 [2021-11-07 07:42:15,480 INFO L226 Difference]: Without dead ends: 475 [2021-11-07 07:42:15,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 464 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2021-11-07 07:42:15,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2021-11-07 07:42:15,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 474. [2021-11-07 07:42:15,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 472 states have (on average 1.0042372881355932) internal successors, (474), 473 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:42:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 474 transitions. [2021-11-07 07:42:15,486 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 474 transitions. Word has length 465 [2021-11-07 07:42:15,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:42:15,486 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 474 transitions. [2021-11-07 07:42:15,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 6.838235294117647) internal successors, (465), 68 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:42:15,486 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 474 transitions. [2021-11-07 07:42:15,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2021-11-07 07:42:15,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:42:15,488 INFO L513 BasicCegarLoop]: trace histogram [67, 67, 67, 67, 66, 66, 66, 1, 1] [2021-11-07 07:42:15,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Forceful destruction successful, exit code 0 [2021-11-07 07:42:15,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2021-11-07 07:42:15,688 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-11-07 07:42:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:42:15,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1471755245, now seen corresponding path program 66 times [2021-11-07 07:42:15,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:42:15,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363380868] [2021-11-07 07:42:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:42:15,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:42:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:42:17,568 INFO L134 CoverageAnalysis]: Checked inductivity of 15345 backedges. 0 proven. 15345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:42:17,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:42:17,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363380868] [2021-11-07 07:42:17,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363380868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:42:17,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348425736] [2021-11-07 07:42:17,568 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:42:17,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:42:17,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:42:17,569 INFO L229 MonitoredProcess]: Starting monitored process 133 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:42:17,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0581eb9e-d9c8-4c0f-9bb5-6915db593814/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process