./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark13_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/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_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark13_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/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 32bit --witnessprinter.graph.data.programhash cf06395da4b8f86107f4d086333b3a12be01d6e25ea5b5133d532da24fef3f46 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:22:10,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:22:10,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:22:10,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:22:10,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:22:10,775 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:22:10,777 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:22:10,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:22:10,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:22:10,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:22:10,792 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:22:10,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:22:10,794 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:22:10,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:22:10,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:22:10,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:22:10,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:22:10,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:22:10,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:22:10,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:22:10,813 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:22:10,815 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:22:10,816 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:22:10,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:22:10,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:22:10,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:22:10,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:22:10,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:22:10,822 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:22:10,823 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:22:10,824 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:22:10,825 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:22:10,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:22:10,826 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:22:10,827 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:22:10,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:22:10,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:22:10,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:22:10,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:22:10,830 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:22:10,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:22:10,833 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-11-07 07:22:10,885 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:22:10,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:22:10,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:22:10,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:22:10,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:22:10,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:22:10,888 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:22:10,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:22:10,888 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:22:10,889 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:22:10,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:22:10,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:22:10,890 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:22:10,890 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 07:22:10,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:22:10,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 07:22:10,890 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-07 07:22:10,891 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:22:10,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 07:22:10,891 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:22:10,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 07:22:10,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:22:10,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:22:10,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:22:10,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:10,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:22:10,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:22:10,901 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 07:22:10,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:22:10,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:22:10,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 07:22:10,904 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:22:10,905 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_534d23ab-9b07-4249-8a42-0d2515fa3cc1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf06395da4b8f86107f4d086333b3a12be01d6e25ea5b5133d532da24fef3f46 [2021-11-07 07:22:11,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:22:11,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:22:11,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:22:11,183 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:22:11,184 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:22:11,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/loop-zilu/benchmark13_conjunctive.i [2021-11-07 07:22:11,260 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/data/e496d18e0/c39d73f9df744762b2b670a90ce41efc/FLAG776e42463 [2021-11-07 07:22:11,692 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:22:11,692 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/sv-benchmarks/c/loop-zilu/benchmark13_conjunctive.i [2021-11-07 07:22:11,698 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/data/e496d18e0/c39d73f9df744762b2b670a90ce41efc/FLAG776e42463 [2021-11-07 07:22:12,106 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/data/e496d18e0/c39d73f9df744762b2b670a90ce41efc [2021-11-07 07:22:12,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:22:12,110 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 07:22:12,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:12,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:22:12,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:22:12,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@377fcc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12, skipping insertion in model container [2021-11-07 07:22:12,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:22:12,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:22:12,300 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/sv-benchmarks/c/loop-zilu/benchmark13_conjunctive.i[873,886] [2021-11-07 07:22:12,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:12,341 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:22:12,362 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/sv-benchmarks/c/loop-zilu/benchmark13_conjunctive.i[873,886] [2021-11-07 07:22:12,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:22:12,384 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:22:12,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12 WrapperNode [2021-11-07 07:22:12,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:22:12,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:12,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 07:22:12,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 07:22:12,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,405 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,426 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 07:22:12,427 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:22:12,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:22:12,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:22:12,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:22:12,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:22:12,462 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:22:12,462 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:22:12,465 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12" (1/1) ... [2021-11-07 07:22:12,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:22:12,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:12,502 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:22:12,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:22:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 07:22:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:22:12,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:22:12,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:22:12,809 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:22:12,809 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 07:22:12,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:12 BoogieIcfgContainer [2021-11-07 07:22:12,822 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:22:12,834 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:22:12,834 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:22:12,838 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:22:12,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:22:12" (1/3) ... [2021-11-07 07:22:12,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2524ab5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:12, skipping insertion in model container [2021-11-07 07:22:12,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:22:12" (2/3) ... [2021-11-07 07:22:12,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2524ab5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:22:12, skipping insertion in model container [2021-11-07 07:22:12,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:22:12" (3/3) ... [2021-11-07 07:22:12,841 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark13_conjunctive.i [2021-11-07 07:22:12,847 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:22:12,861 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-07 07:22:12,923 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:22:12,939 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 07:22:12,939 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-07 07:22:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:12,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 07:22:12,976 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:12,977 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 07:22:12,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:12,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:12,984 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-11-07 07:22:12,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:12,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551889486] [2021-11-07 07:22:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:12,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:13,223 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 07:22:13,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:13,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551889486] [2021-11-07 07:22:13,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551889486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:13,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:13,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 07:22:13,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912116404] [2021-11-07 07:22:13,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:13,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:13,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:13,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:13,265 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 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 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 07:22:13,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:13,330 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-11-07 07:22:13,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:13,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 07:22:13,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:13,340 INFO L225 Difference]: With dead ends: 35 [2021-11-07 07:22:13,340 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 07:22:13,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:13,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 07:22:13,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 07:22:13,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) 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 07:22:13,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-07 07:22:13,370 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 5 [2021-11-07 07:22:13,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:13,370 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-07 07:22:13,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 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 07:22:13,371 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-07 07:22:13,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:22:13,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:13,372 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:13,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 07:22:13,372 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:13,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:13,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-11-07 07:22:13,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:13,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55918355] [2021-11-07 07:22:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:13,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:13,412 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 07:22:13,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:13,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55918355] [2021-11-07 07:22:13,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55918355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:13,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:13,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:22:13,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900330904] [2021-11-07 07:22:13,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:13,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:13,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:13,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:13,417 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 07:22:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:13,431 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2021-11-07 07:22:13,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:13,431 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 07:22:13,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:13,432 INFO L225 Difference]: With dead ends: 18 [2021-11-07 07:22:13,432 INFO L226 Difference]: Without dead ends: 17 [2021-11-07 07:22:13,433 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 07:22:13,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-07 07:22:13,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-11-07 07:22:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) 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 07:22:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-11-07 07:22:13,437 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2021-11-07 07:22:13,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:13,437 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-11-07 07:22:13,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 07:22:13,438 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-11-07 07:22:13,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 07:22:13,438 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:13,438 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:13,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 07:22:13,439 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:13,440 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-11-07 07:22:13,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:13,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409948972] [2021-11-07 07:22:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:13,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:13,480 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 07:22:13,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:13,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409948972] [2021-11-07 07:22:13,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409948972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:13,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:22:13,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 07:22:13,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527678731] [2021-11-07 07:22:13,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:22:13,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:13,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:22:13,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:22:13,484 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 07:22:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:13,493 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-11-07 07:22:13,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:22:13,494 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 07:22:13,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:13,495 INFO L225 Difference]: With dead ends: 16 [2021-11-07 07:22:13,495 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 07:22:13,495 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 07:22:13,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 07:22:13,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-07 07:22:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) 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 07:22:13,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-07 07:22:13,499 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-11-07 07:22:13,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:13,499 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-07 07:22:13,499 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 07:22:13,500 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-07 07:22:13,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 07:22:13,500 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:13,500 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:13,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 07:22:13,501 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:13,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:13,502 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-11-07 07:22:13,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:13,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734070369] [2021-11-07 07:22:13,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:13,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:13,598 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 07:22:13,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:13,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734070369] [2021-11-07 07:22:13,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734070369] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:13,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885996096] [2021-11-07 07:22:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:13,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:13,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:13,603 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:13,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 07:22:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:13,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:22:13,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:13,771 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 07:22:13,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885996096] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:13,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:13,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-07 07:22:13,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799518340] [2021-11-07 07:22:13,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:22:13,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:13,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:22:13,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:22:13,775 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 07:22:13,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:13,838 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-07 07:22:13,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:22:13,844 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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) Word has length 10 [2021-11-07 07:22:13,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:13,845 INFO L225 Difference]: With dead ends: 21 [2021-11-07 07:22:13,845 INFO L226 Difference]: Without dead ends: 20 [2021-11-07 07:22:13,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:22:13,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-07 07:22:13,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-11-07 07:22:13,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:13,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-07 07:22:13,849 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2021-11-07 07:22:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:13,850 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-07 07:22:13,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 07:22:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-07 07:22:13,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 07:22:13,851 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:13,851 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:13,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:14,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-07 07:22:14,052 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:14,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:14,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1472766433, now seen corresponding path program 1 times [2021-11-07 07:22:14,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:14,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095576301] [2021-11-07 07:22:14,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:14,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:14,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:14,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:14,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095576301] [2021-11-07 07:22:14,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095576301] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:14,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452060244] [2021-11-07 07:22:14,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:14,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:14,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:14,166 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:14,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 07:22:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:14,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:22:14,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:14,332 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:14,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452060244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 07:22:14,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 07:22:14,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-11-07 07:22:14,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851000704] [2021-11-07 07:22:14,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:22:14,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:14,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:22:14,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:22:14,336 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:14,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:14,384 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-07 07:22:14,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:22:14,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2021-11-07 07:22:14,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:14,387 INFO L225 Difference]: With dead ends: 18 [2021-11-07 07:22:14,387 INFO L226 Difference]: Without dead ends: 17 [2021-11-07 07:22:14,388 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:22:14,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-07 07:22:14,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-07 07:22:14,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) 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 07:22:14,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-11-07 07:22:14,401 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2021-11-07 07:22:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:14,405 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-11-07 07:22:14,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:14,406 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-11-07 07:22:14,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:22:14,408 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:14,408 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-07 07:22:14,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:14,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:14,635 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:14,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:14,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2021-11-07 07:22:14,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:14,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929628340] [2021-11-07 07:22:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:14,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:14,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:14,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929628340] [2021-11-07 07:22:14,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929628340] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:14,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193987975] [2021-11-07 07:22:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:14,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:14,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:14,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:14,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 07:22:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:14,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:22:14,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:14,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193987975] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:14,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:14,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-11-07 07:22:14,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708226066] [2021-11-07 07:22:14,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:22:14,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:22:14,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:22:14,787 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:14,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:14,801 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2021-11-07 07:22:14,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:22:14,802 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-11-07 07:22:14,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:14,803 INFO L225 Difference]: With dead ends: 21 [2021-11-07 07:22:14,803 INFO L226 Difference]: Without dead ends: 20 [2021-11-07 07:22:14,804 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 07:22:14,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-07 07:22:14,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-11-07 07:22:14,806 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 07:22:14,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2021-11-07 07:22:14,807 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2021-11-07 07:22:14,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:14,808 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2021-11-07 07:22:14,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:14,808 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2021-11-07 07:22:14,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 07:22:14,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:14,809 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-11-07 07:22:14,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:15,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:15,025 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:15,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:15,026 INFO L85 PathProgramCache]: Analyzing trace with hash 487275813, now seen corresponding path program 2 times [2021-11-07 07:22:15,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:15,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776922745] [2021-11-07 07:22:15,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:15,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:15,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:15,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776922745] [2021-11-07 07:22:15,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776922745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:15,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026061339] [2021-11-07 07:22:15,129 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:15,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:15,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:15,131 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:15,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 07:22:15,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:15,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:15,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:22:15,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:15,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026061339] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:15,285 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:15,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-07 07:22:15,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48149862] [2021-11-07 07:22:15,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:22:15,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:15,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:22:15,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:22:15,288 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 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 07:22:15,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:15,346 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-11-07 07:22:15,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:22:15,347 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 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) Word has length 15 [2021-11-07 07:22:15,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:15,348 INFO L225 Difference]: With dead ends: 24 [2021-11-07 07:22:15,348 INFO L226 Difference]: Without dead ends: 23 [2021-11-07 07:22:15,349 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:22:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-07 07:22:15,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-11-07 07:22:15,352 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 07:22:15,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-11-07 07:22:15,353 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2021-11-07 07:22:15,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:15,353 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-11-07 07:22:15,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 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 07:22:15,354 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-11-07 07:22:15,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 07:22:15,354 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:15,355 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1] [2021-11-07 07:22:15,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:15,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-07 07:22:15,569 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:15,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:15,570 INFO L85 PathProgramCache]: Analyzing trace with hash 120622631, now seen corresponding path program 2 times [2021-11-07 07:22:15,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:15,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440607121] [2021-11-07 07:22:15,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:15,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:15,617 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:15,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:15,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440607121] [2021-11-07 07:22:15,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440607121] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:15,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499419141] [2021-11-07 07:22:15,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:15,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:15,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:15,620 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:15,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 07:22:15,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:15,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:15,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:22:15,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:15,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499419141] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:15,758 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:15,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-11-07 07:22:15,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686820797] [2021-11-07 07:22:15,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:22:15,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:15,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:22:15,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:22:15,763 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), 5 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 07:22:15,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:15,790 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-11-07 07:22:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:22:15,791 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 07:22:15,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:15,794 INFO L225 Difference]: With dead ends: 26 [2021-11-07 07:22:15,794 INFO L226 Difference]: Without dead ends: 25 [2021-11-07 07:22:15,794 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 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 07:22:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-07 07:22:15,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2021-11-07 07:22:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 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 07:22:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2021-11-07 07:22:15,801 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2021-11-07 07:22:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:15,801 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2021-11-07 07:22:15,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 07:22:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2021-11-07 07:22:15,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 07:22:15,803 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:15,804 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1] [2021-11-07 07:22:15,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:16,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:16,025 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:16,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1418773263, now seen corresponding path program 3 times [2021-11-07 07:22:16,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:16,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169764869] [2021-11-07 07:22:16,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:16,026 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:16,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:16,137 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:16,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:16,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169764869] [2021-11-07 07:22:16,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169764869] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:16,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667999508] [2021-11-07 07:22:16,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:16,138 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:16,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:16,139 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:16,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 07:22:16,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 07:22:16,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:16,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:22:16,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:16,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667999508] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:16,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:16,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-11-07 07:22:16,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671104142] [2021-11-07 07:22:16,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:22:16,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:16,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:22:16,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:22:16,342 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 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 07:22:16,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:16,401 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-11-07 07:22:16,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:22:16,401 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 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 20 [2021-11-07 07:22:16,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:16,402 INFO L225 Difference]: With dead ends: 29 [2021-11-07 07:22:16,402 INFO L226 Difference]: Without dead ends: 28 [2021-11-07 07:22:16,402 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:22:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-07 07:22:16,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-11-07 07:22:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.08) internal successors, (27), 26 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 07:22:16,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-11-07 07:22:16,406 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2021-11-07 07:22:16,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:16,406 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-11-07 07:22:16,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 12 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 07:22:16,407 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-11-07 07:22:16,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 07:22:16,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:16,408 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1] [2021-11-07 07:22:16,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:16,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:16,621 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:16,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:16,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1936471309, now seen corresponding path program 3 times [2021-11-07 07:22:16,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:16,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028140205] [2021-11-07 07:22:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:16,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:16,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:16,678 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 07:22:16,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:16,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028140205] [2021-11-07 07:22:16,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028140205] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:16,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059754345] [2021-11-07 07:22:16,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:16,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:16,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:16,680 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:16,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 07:22:16,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-07 07:22:16,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:16,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:22:16,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:16,821 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 07:22:16,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059754345] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:16,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:16,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-11-07 07:22:16,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999180444] [2021-11-07 07:22:16,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:22:16,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:16,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:22:16,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:22:16,828 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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 07:22:16,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:16,859 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-11-07 07:22:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:22:16,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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) Word has length 22 [2021-11-07 07:22:16,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:16,862 INFO L225 Difference]: With dead ends: 31 [2021-11-07 07:22:16,862 INFO L226 Difference]: Without dead ends: 30 [2021-11-07 07:22:16,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 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 07:22:16,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-07 07:22:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2021-11-07 07:22:16,865 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 07:22:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-11-07 07:22:16,866 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 22 [2021-11-07 07:22:16,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:16,867 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-11-07 07:22:16,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 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 07:22:16,867 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-11-07 07:22:16,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 07:22:16,868 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:16,868 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-11-07 07:22:16,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-07 07:22:17,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:17,077 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:17,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:17,078 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 4 times [2021-11-07 07:22:17,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:17,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115692568] [2021-11-07 07:22:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:17,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:17,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:17,189 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:17,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:17,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115692568] [2021-11-07 07:22:17,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115692568] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:17,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765693275] [2021-11-07 07:22:17,190 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:22:17,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:17,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:17,197 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:17,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 07:22:17,277 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:22:17,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:17,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:22:17,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:17,391 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:17,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765693275] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:17,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:17,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-11-07 07:22:17,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679344184] [2021-11-07 07:22:17,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:22:17,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:17,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:22:17,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:22:17,395 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 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 07:22:17,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:17,475 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-11-07 07:22:17,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:22:17,475 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 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) Word has length 25 [2021-11-07 07:22:17,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:17,478 INFO L225 Difference]: With dead ends: 34 [2021-11-07 07:22:17,478 INFO L226 Difference]: Without dead ends: 33 [2021-11-07 07:22:17,478 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:22:17,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-07 07:22:17,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-11-07 07:22:17,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:17,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-11-07 07:22:17,488 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2021-11-07 07:22:17,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:17,488 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-11-07 07:22:17,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.230769230769231) internal successors, (29), 14 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 07:22:17,488 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-11-07 07:22:17,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 07:22:17,489 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:17,489 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-11-07 07:22:17,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:17,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:17,713 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:17,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:17,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1410159193, now seen corresponding path program 4 times [2021-11-07 07:22:17,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:17,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811390020] [2021-11-07 07:22:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:17,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:17,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:17,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811390020] [2021-11-07 07:22:17,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811390020] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:17,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14650795] [2021-11-07 07:22:17,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:22:17,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:17,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:17,771 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:17,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-07 07:22:17,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:22:17,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:17,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 07:22:17,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:17,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14650795] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:17,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:17,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-11-07 07:22:17,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901323211] [2021-11-07 07:22:17,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 07:22:17,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:17,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 07:22:17,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:22:17,949 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 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 07:22:17,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:17,970 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-11-07 07:22:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:22:17,970 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 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 07:22:17,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:17,971 INFO L225 Difference]: With dead ends: 36 [2021-11-07 07:22:17,971 INFO L226 Difference]: Without dead ends: 35 [2021-11-07 07:22:17,972 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 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 07:22:17,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-07 07:22:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2021-11-07 07:22:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.0625) internal successors, (34), 33 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 07:22:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2021-11-07 07:22:17,975 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 27 [2021-11-07 07:22:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:17,976 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2021-11-07 07:22:17,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.5) internal successors, (27), 7 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 07:22:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2021-11-07 07:22:17,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-07 07:22:17,977 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:17,977 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1] [2021-11-07 07:22:18,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:18,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:18,200 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:18,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:18,200 INFO L85 PathProgramCache]: Analyzing trace with hash -977343119, now seen corresponding path program 5 times [2021-11-07 07:22:18,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:18,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743973727] [2021-11-07 07:22:18,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:18,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:18,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:18,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743973727] [2021-11-07 07:22:18,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743973727] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:18,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602759194] [2021-11-07 07:22:18,330 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:22:18,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:18,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:18,333 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:18,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-07 07:22:18,441 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-07 07:22:18,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:18,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:22:18,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:18,598 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:18,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602759194] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:18,599 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:18,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-11-07 07:22:18,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809149684] [2021-11-07 07:22:18,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 07:22:18,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:18,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 07:22:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:22:18,603 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 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 07:22:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:18,726 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-11-07 07:22:18,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 07:22:18,726 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 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 30 [2021-11-07 07:22:18,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:18,730 INFO L225 Difference]: With dead ends: 39 [2021-11-07 07:22:18,730 INFO L226 Difference]: Without dead ends: 38 [2021-11-07 07:22:18,731 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:22:18,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-07 07:22:18,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-11-07 07:22:18,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:18,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-11-07 07:22:18,735 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2021-11-07 07:22:18,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:18,735 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-11-07 07:22:18,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 16 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 07:22:18,735 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-11-07 07:22:18,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-07 07:22:18,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:18,736 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1] [2021-11-07 07:22:18,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:18,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-07 07:22:18,941 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:18,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1371102067, now seen corresponding path program 5 times [2021-11-07 07:22:18,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:18,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512445033] [2021-11-07 07:22:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:18,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:19,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:19,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512445033] [2021-11-07 07:22:19,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512445033] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:19,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984165589] [2021-11-07 07:22:19,028 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:22:19,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:19,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:19,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:19,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-07 07:22:19,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-07 07:22:19,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:19,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:22:19,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:19,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984165589] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:19,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:19,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-11-07 07:22:19,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104721729] [2021-11-07 07:22:19,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:22:19,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:19,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:22:19,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:22:19,300 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:19,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:19,335 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2021-11-07 07:22:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:22:19,335 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2021-11-07 07:22:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:19,337 INFO L225 Difference]: With dead ends: 41 [2021-11-07 07:22:19,338 INFO L226 Difference]: Without dead ends: 40 [2021-11-07 07:22:19,338 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 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 07:22:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-07 07:22:19,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2021-11-07 07:22:19,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-11-07 07:22:19,345 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 32 [2021-11-07 07:22:19,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:19,345 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-11-07 07:22:19,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:19,346 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-11-07 07:22:19,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-07 07:22:19,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:19,351 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1] [2021-11-07 07:22:19,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:19,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:19,553 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:19,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:19,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1362746405, now seen corresponding path program 6 times [2021-11-07 07:22:19,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:19,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059364239] [2021-11-07 07:22:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:19,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:19,713 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:19,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:19,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059364239] [2021-11-07 07:22:19,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059364239] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:19,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120760878] [2021-11-07 07:22:19,714 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:22:19,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:19,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:19,721 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:19,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-07 07:22:19,837 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-07 07:22:19,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:19,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 07:22:19,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:19,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120760878] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:19,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:19,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-11-07 07:22:19,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652973162] [2021-11-07 07:22:19,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 07:22:19,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:19,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 07:22:19,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:22:19,985 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:20,098 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-11-07 07:22:20,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 07:22:20,098 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 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 35 [2021-11-07 07:22:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:20,099 INFO L225 Difference]: With dead ends: 44 [2021-11-07 07:22:20,099 INFO L226 Difference]: Without dead ends: 43 [2021-11-07 07:22:20,100 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=182, Invalid=418, Unknown=0, NotChecked=0, Total=600 [2021-11-07 07:22:20,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-07 07:22:20,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-11-07 07:22:20,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:20,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-11-07 07:22:20,105 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2021-11-07 07:22:20,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:20,105 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-11-07 07:22:20,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.2941176470588234) internal successors, (39), 18 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:20,106 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-11-07 07:22:20,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-07 07:22:20,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:20,107 INFO L513 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1] [2021-11-07 07:22:20,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:20,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 07:22:20,329 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:20,329 INFO L85 PathProgramCache]: Analyzing trace with hash -365728473, now seen corresponding path program 6 times [2021-11-07 07:22:20,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:20,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275005304] [2021-11-07 07:22:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:20,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:20,394 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:20,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:20,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275005304] [2021-11-07 07:22:20,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275005304] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:20,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911654608] [2021-11-07 07:22:20,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:22:20,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:20,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:20,396 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:20,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-07 07:22:20,528 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-07 07:22:20,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:20,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 07:22:20,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:20,638 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:20,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911654608] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:20,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:20,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-11-07 07:22:20,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893489804] [2021-11-07 07:22:20,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 07:22:20,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:20,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 07:22:20,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:22:20,641 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:20,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:20,669 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-11-07 07:22:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 07:22:20,669 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2021-11-07 07:22:20,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:20,670 INFO L225 Difference]: With dead ends: 46 [2021-11-07 07:22:20,670 INFO L226 Difference]: Without dead ends: 45 [2021-11-07 07:22:20,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 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 07:22:20,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-07 07:22:20,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-11-07 07:22:20,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:20,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-11-07 07:22:20,679 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 37 [2021-11-07 07:22:20,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:20,679 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-11-07 07:22:20,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 9 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:20,680 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-11-07 07:22:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-07 07:22:20,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:20,681 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1] [2021-11-07 07:22:20,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:20,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-07 07:22:20,897 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:20,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:20,897 INFO L85 PathProgramCache]: Analyzing trace with hash 915144177, now seen corresponding path program 7 times [2021-11-07 07:22:20,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:20,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424377480] [2021-11-07 07:22:20,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:20,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:21,065 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:21,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:21,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424377480] [2021-11-07 07:22:21,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424377480] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:21,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028260525] [2021-11-07 07:22:21,065 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:22:21,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:21,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:21,069 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:21,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-07 07:22:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:21,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 07:22:21,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:21,390 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:21,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028260525] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:21,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:21,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-11-07 07:22:21,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830270643] [2021-11-07 07:22:21,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 07:22:21,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:21,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 07:22:21,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:22:21,393 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:21,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:21,518 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-11-07 07:22:21,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 07:22:21,519 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 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 40 [2021-11-07 07:22:21,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:21,520 INFO L225 Difference]: With dead ends: 49 [2021-11-07 07:22:21,520 INFO L226 Difference]: Without dead ends: 48 [2021-11-07 07:22:21,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:22:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-07 07:22:21,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-11-07 07:22:21,524 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 07:22:21,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-11-07 07:22:21,524 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2021-11-07 07:22:21,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:21,525 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-11-07 07:22:21,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:21,525 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-11-07 07:22:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-07 07:22:21,526 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:21,526 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1] [2021-11-07 07:22:21,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:21,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-07 07:22:21,739 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:21,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:21,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1014739981, now seen corresponding path program 7 times [2021-11-07 07:22:21,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:21,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677371737] [2021-11-07 07:22:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:21,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:21,819 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:21,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:21,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677371737] [2021-11-07 07:22:21,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677371737] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:21,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262877894] [2021-11-07 07:22:21,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:22:21,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:21,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:21,822 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:21,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 07:22:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:21,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:22:21,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:22,079 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:22,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262877894] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:22,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:22,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-11-07 07:22:22,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947913058] [2021-11-07 07:22:22,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:22:22,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:22,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:22:22,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:22:22,082 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:22,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:22,108 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2021-11-07 07:22:22,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 07:22:22,108 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-11-07 07:22:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:22,109 INFO L225 Difference]: With dead ends: 51 [2021-11-07 07:22:22,109 INFO L226 Difference]: Without dead ends: 50 [2021-11-07 07:22:22,110 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 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 07:22:22,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-07 07:22:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-11-07 07:22:22,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-11-07 07:22:22,132 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2021-11-07 07:22:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:22,133 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-11-07 07:22:22,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.666666666666667) internal successors, (42), 10 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-11-07 07:22:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-07 07:22:22,134 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:22,135 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1] [2021-11-07 07:22:22,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:22,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-07 07:22:22,349 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:22,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:22,349 INFO L85 PathProgramCache]: Analyzing trace with hash -2138891355, now seen corresponding path program 8 times [2021-11-07 07:22:22,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:22,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981528639] [2021-11-07 07:22:22,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:22,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:22,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:22,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981528639] [2021-11-07 07:22:22,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981528639] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:22,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133197724] [2021-11-07 07:22:22,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:22,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:22,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:22,575 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:22,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-07 07:22:22,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:22,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:22,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 07:22:22,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:22,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133197724] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:22,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:22,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-11-07 07:22:22,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515393656] [2021-11-07 07:22:22,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 07:22:22,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:22,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 07:22:22,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:22:22,951 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:23,090 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-11-07 07:22:23,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 07:22:23,090 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 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 07:22:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:23,091 INFO L225 Difference]: With dead ends: 54 [2021-11-07 07:22:23,091 INFO L226 Difference]: Without dead ends: 53 [2021-11-07 07:22:23,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=277, Invalid=653, Unknown=0, NotChecked=0, Total=930 [2021-11-07 07:22:23,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-07 07:22:23,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-11-07 07:22:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.04) internal successors, (52), 51 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 07:22:23,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-11-07 07:22:23,095 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2021-11-07 07:22:23,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:23,095 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-11-07 07:22:23,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 22 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-11-07 07:22:23,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-07 07:22:23,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:23,096 INFO L513 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1] [2021-11-07 07:22:23,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:23,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:23,309 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:23,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:23,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1814744231, now seen corresponding path program 8 times [2021-11-07 07:22:23,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:23,310 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49976523] [2021-11-07 07:22:23,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:23,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:23,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:23,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49976523] [2021-11-07 07:22:23,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49976523] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:23,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420850919] [2021-11-07 07:22:23,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:23,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:23,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:23,390 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:23,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-07 07:22:23,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:23,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:23,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 07:22:23,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:23,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420850919] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:23,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:23,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-11-07 07:22:23,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220879145] [2021-11-07 07:22:23,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 07:22:23,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:23,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 07:22:23,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-11-07 07:22:23,707 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 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 07:22:23,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:23,736 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-11-07 07:22:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 07:22:23,737 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 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) Word has length 47 [2021-11-07 07:22:23,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:23,738 INFO L225 Difference]: With dead ends: 56 [2021-11-07 07:22:23,738 INFO L226 Difference]: Without dead ends: 55 [2021-11-07 07:22:23,738 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 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 07:22:23,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-07 07:22:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2021-11-07 07:22:23,752 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 07:22:23,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-11-07 07:22:23,752 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 47 [2021-11-07 07:22:23,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:23,753 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-11-07 07:22:23,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 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 07:22:23,753 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-11-07 07:22:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-07 07:22:23,755 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:23,755 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1] [2021-11-07 07:22:23,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:23,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:23,981 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:23,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:23,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2002882959, now seen corresponding path program 9 times [2021-11-07 07:22:23,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:23,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850416378] [2021-11-07 07:22:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:23,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:24,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:24,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850416378] [2021-11-07 07:22:24,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850416378] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:24,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853310241] [2021-11-07 07:22:24,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:24,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:24,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:24,199 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:24,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 07:22:24,411 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-07 07:22:24,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:24,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 07:22:24,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:24,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853310241] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:24,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:24,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-11-07 07:22:24,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090015812] [2021-11-07 07:22:24,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 07:22:24,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:24,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 07:22:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2021-11-07 07:22:24,604 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 24 states, 23 states have (on average 2.347826086956522) internal successors, (54), 24 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 07:22:24,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:24,766 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-11-07 07:22:24,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 07:22:24,766 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.347826086956522) internal successors, (54), 24 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) Word has length 50 [2021-11-07 07:22:24,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:24,767 INFO L225 Difference]: With dead ends: 59 [2021-11-07 07:22:24,767 INFO L226 Difference]: Without dead ends: 58 [2021-11-07 07:22:24,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=332, Invalid=790, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:22:24,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-07 07:22:24,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-11-07 07:22:24,771 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 07:22:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2021-11-07 07:22:24,772 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2021-11-07 07:22:24,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:24,772 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2021-11-07 07:22:24,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.347826086956522) internal successors, (54), 24 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 07:22:24,772 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2021-11-07 07:22:24,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-07 07:22:24,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:24,776 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1] [2021-11-07 07:22:24,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:24,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-11-07 07:22:24,985 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:24,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:24,986 INFO L85 PathProgramCache]: Analyzing trace with hash -625173389, now seen corresponding path program 9 times [2021-11-07 07:22:24,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:24,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982369474] [2021-11-07 07:22:24,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:24,986 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:24,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:25,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:25,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982369474] [2021-11-07 07:22:25,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982369474] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:25,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778749507] [2021-11-07 07:22:25,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:25,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:25,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:25,112 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:25,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-07 07:22:25,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-07 07:22:25,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:25,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 07:22:25,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:25,489 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:25,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778749507] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:25,489 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:25,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-11-07 07:22:25,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629107374] [2021-11-07 07:22:25,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 07:22:25,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:25,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 07:22:25,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-11-07 07:22:25,491 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 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 07:22:25,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:25,523 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-11-07 07:22:25,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 07:22:25,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 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 07:22:25,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:25,525 INFO L225 Difference]: With dead ends: 61 [2021-11-07 07:22:25,525 INFO L226 Difference]: Without dead ends: 60 [2021-11-07 07:22:25,525 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 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 07:22:25,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-07 07:22:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2021-11-07 07:22:25,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 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 07:22:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-11-07 07:22:25,529 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 52 [2021-11-07 07:22:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:25,529 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-11-07 07:22:25,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 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 07:22:25,530 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-11-07 07:22:25,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-07 07:22:25,531 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:25,531 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-11-07 07:22:25,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:25,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-07 07:22:25,757 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:25,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 10 times [2021-11-07 07:22:25,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:25,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821606983] [2021-11-07 07:22:25,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:25,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:26,008 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:26,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:26,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821606983] [2021-11-07 07:22:26,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821606983] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:26,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323674231] [2021-11-07 07:22:26,009 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:22:26,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:26,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:26,010 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:26,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-07 07:22:26,288 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:22:26,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:26,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 07:22:26,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:26,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323674231] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:26,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:26,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-11-07 07:22:26,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470364517] [2021-11-07 07:22:26,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 07:22:26,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:26,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 07:22:26,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-11-07 07:22:26,506 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 26 states, 25 states have (on average 2.36) internal successors, (59), 26 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 07:22:26,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:26,703 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-11-07 07:22:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 07:22:26,703 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.36) internal successors, (59), 26 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 55 [2021-11-07 07:22:26,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:26,704 INFO L225 Difference]: With dead ends: 64 [2021-11-07 07:22:26,704 INFO L226 Difference]: Without dead ends: 63 [2021-11-07 07:22:26,705 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=392, Invalid=940, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 07:22:26,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-07 07:22:26,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-11-07 07:22:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 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 07:22:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-11-07 07:22:26,708 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2021-11-07 07:22:26,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:26,708 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-11-07 07:22:26,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.36) internal successors, (59), 26 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 07:22:26,709 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-11-07 07:22:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-07 07:22:26,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:26,709 INFO L513 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-11-07 07:22:26,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:26,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-07 07:22:26,930 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:26,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:26,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1980812327, now seen corresponding path program 10 times [2021-11-07 07:22:26,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:26,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280490202] [2021-11-07 07:22:26,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:26,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:27,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:27,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280490202] [2021-11-07 07:22:27,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280490202] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:27,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829582920] [2021-11-07 07:22:27,026 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:22:27,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:27,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:27,030 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:27,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 07:22:27,253 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:22:27,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:27,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-07 07:22:27,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:27,442 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:27,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829582920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:27,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:27,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-11-07 07:22:27,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227971421] [2021-11-07 07:22:27,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 07:22:27,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:27,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 07:22:27,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-11-07 07:22:27,445 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 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 07:22:27,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:27,487 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2021-11-07 07:22:27,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 07:22:27,487 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 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) Word has length 57 [2021-11-07 07:22:27,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:27,488 INFO L225 Difference]: With dead ends: 66 [2021-11-07 07:22:27,488 INFO L226 Difference]: Without dead ends: 65 [2021-11-07 07:22:27,489 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 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 07:22:27,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-07 07:22:27,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2021-11-07 07:22:27,499 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 07:22:27,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-11-07 07:22:27,500 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 57 [2021-11-07 07:22:27,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:27,501 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-11-07 07:22:27,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.75) internal successors, (57), 13 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 07:22:27,501 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-11-07 07:22:27,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 07:22:27,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:27,502 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1] [2021-11-07 07:22:27,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:27,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-07 07:22:27,717 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:27,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:27,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1824407281, now seen corresponding path program 11 times [2021-11-07 07:22:27,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:27,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517166960] [2021-11-07 07:22:27,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:27,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:28,012 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 07:22:28,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:28,012 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517166960] [2021-11-07 07:22:28,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517166960] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:28,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427695481] [2021-11-07 07:22:28,013 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:22:28,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:28,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:28,014 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:28,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-07 07:22:28,270 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-07 07:22:28,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:28,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 07:22:28,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:28,461 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 07:22:28,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427695481] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:28,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:28,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-11-07 07:22:28,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548878924] [2021-11-07 07:22:28,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 07:22:28,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:28,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 07:22:28,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=547, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:22:28,464 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 28 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 28 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 07:22:28,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:28,667 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-11-07 07:22:28,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 07:22:28,668 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 28 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) Word has length 60 [2021-11-07 07:22:28,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:28,668 INFO L225 Difference]: With dead ends: 69 [2021-11-07 07:22:28,668 INFO L226 Difference]: Without dead ends: 68 [2021-11-07 07:22:28,669 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=457, Invalid=1103, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 07:22:28,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-07 07:22:28,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2021-11-07 07:22:28,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-11-07 07:22:28,673 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2021-11-07 07:22:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:28,674 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-11-07 07:22:28,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.3703703703703702) internal successors, (64), 28 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 07:22:28,682 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-11-07 07:22:28,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 07:22:28,684 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:28,684 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1, 1, 1] [2021-11-07 07:22:28,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:28,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-07 07:22:28,909 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash 908741875, now seen corresponding path program 11 times [2021-11-07 07:22:28,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:28,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796288894] [2021-11-07 07:22:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:28,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:29,038 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:29,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:29,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796288894] [2021-11-07 07:22:29,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796288894] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:29,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934587687] [2021-11-07 07:22:29,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:22:29,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:29,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:29,039 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:29,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-07 07:22:29,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-07 07:22:29,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:29,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-07 07:22:29,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:29,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934587687] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:29,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:29,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-11-07 07:22:29,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966946040] [2021-11-07 07:22:29,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 07:22:29,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:29,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 07:22:29,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-11-07 07:22:29,473 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 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 07:22:29,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:29,511 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2021-11-07 07:22:29,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 07:22:29,511 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 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 07:22:29,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:29,512 INFO L225 Difference]: With dead ends: 71 [2021-11-07 07:22:29,512 INFO L226 Difference]: Without dead ends: 70 [2021-11-07 07:22:29,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 62 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 07:22:29,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-11-07 07:22:29,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2021-11-07 07:22:29,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 68 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 07:22:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2021-11-07 07:22:29,516 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 62 [2021-11-07 07:22:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:29,517 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2021-11-07 07:22:29,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 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 07:22:29,517 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2021-11-07 07:22:29,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 07:22:29,518 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:29,518 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1] [2021-11-07 07:22:29,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:29,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-07 07:22:29,733 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:29,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1150384805, now seen corresponding path program 12 times [2021-11-07 07:22:29,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:29,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406634981] [2021-11-07 07:22:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:29,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:30,031 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:30,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:30,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406634981] [2021-11-07 07:22:30,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406634981] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:30,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580762449] [2021-11-07 07:22:30,031 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:22:30,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:30,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:30,032 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:30,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-07 07:22:30,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-07 07:22:30,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:30,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 07:22:30,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:30,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580762449] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:30,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:30,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-11-07 07:22:30,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009883463] [2021-11-07 07:22:30,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 07:22:30,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:30,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 07:22:30,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=631, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:22:30,560 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 30 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 30 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 07:22:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:30,764 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-11-07 07:22:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 07:22:30,765 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 30 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 65 [2021-11-07 07:22:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:30,765 INFO L225 Difference]: With dead ends: 74 [2021-11-07 07:22:30,765 INFO L226 Difference]: Without dead ends: 73 [2021-11-07 07:22:30,766 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=527, Invalid=1279, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 07:22:30,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-11-07 07:22:30,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2021-11-07 07:22:30,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:30,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-11-07 07:22:30,772 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2021-11-07 07:22:30,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:30,773 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-11-07 07:22:30,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.3793103448275863) internal successors, (69), 30 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 07:22:30,773 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-11-07 07:22:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-07 07:22:30,774 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:30,774 INFO L513 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1] [2021-11-07 07:22:30,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-07 07:22:31,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:31,001 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:31,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:31,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1713204135, now seen corresponding path program 12 times [2021-11-07 07:22:31,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:31,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092783219] [2021-11-07 07:22:31,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:31,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:31,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:31,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092783219] [2021-11-07 07:22:31,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092783219] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:31,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298591165] [2021-11-07 07:22:31,136 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:22:31,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:31,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:31,137 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:31,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-07 07:22:31,464 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-07 07:22:31,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:31,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-07 07:22:31,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:31,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298591165] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:31,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:31,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-11-07 07:22:31,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100000733] [2021-11-07 07:22:31,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 07:22:31,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 07:22:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-11-07 07:22:31,639 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 15 states, 14 states have (on average 4.785714285714286) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:31,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:31,685 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2021-11-07 07:22:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 07:22:31,686 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.785714285714286) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-07 07:22:31,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:31,687 INFO L225 Difference]: With dead ends: 76 [2021-11-07 07:22:31,687 INFO L226 Difference]: Without dead ends: 75 [2021-11-07 07:22:31,687 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 67 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 07:22:31,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-11-07 07:22:31,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2021-11-07 07:22:31,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-11-07 07:22:31,690 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 67 [2021-11-07 07:22:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:31,691 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-11-07 07:22:31,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.785714285714286) internal successors, (67), 15 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-11-07 07:22:31,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-07 07:22:31,692 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:31,692 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1] [2021-11-07 07:22:31,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:31,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 07:22:31,905 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:31,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:31,905 INFO L85 PathProgramCache]: Analyzing trace with hash 968060785, now seen corresponding path program 13 times [2021-11-07 07:22:31,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:31,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802352762] [2021-11-07 07:22:31,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:31,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:32,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:32,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802352762] [2021-11-07 07:22:32,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802352762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:32,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244308235] [2021-11-07 07:22:32,221 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:22:32,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:32,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:32,222 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:32,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-07 07:22:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:32,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 07:22:32,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:32,786 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:32,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244308235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:32,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:32,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-11-07 07:22:32,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984797487] [2021-11-07 07:22:32,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 07:22:32,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:32,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 07:22:32,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-11-07 07:22:32,795 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:33,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:33,038 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-11-07 07:22:33,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 07:22:33,039 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 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 70 [2021-11-07 07:22:33,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:33,040 INFO L225 Difference]: With dead ends: 79 [2021-11-07 07:22:33,040 INFO L226 Difference]: Without dead ends: 78 [2021-11-07 07:22:33,041 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=602, Invalid=1468, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 07:22:33,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-07 07:22:33,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-11-07 07:22:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:33,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2021-11-07 07:22:33,044 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2021-11-07 07:22:33,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:33,045 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2021-11-07 07:22:33,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.3870967741935485) internal successors, (74), 32 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:33,045 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2021-11-07 07:22:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 07:22:33,046 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:33,046 INFO L513 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1, 1, 1] [2021-11-07 07:22:33,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-07 07:22:33,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-07 07:22:33,269 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:33,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:33,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1701487245, now seen corresponding path program 13 times [2021-11-07 07:22:33,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:33,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144608378] [2021-11-07 07:22:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:33,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:33,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:33,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144608378] [2021-11-07 07:22:33,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144608378] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:33,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038151796] [2021-11-07 07:22:33,401 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:22:33,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:33,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:33,402 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:33,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-07 07:22:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:33,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-07 07:22:33,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:34,034 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:34,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038151796] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:34,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:34,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-11-07 07:22:34,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425373417] [2021-11-07 07:22:34,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 07:22:34,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:34,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 07:22:34,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-11-07 07:22:34,040 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 16 states, 15 states have (on average 4.8) internal successors, (72), 16 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:34,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:34,072 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2021-11-07 07:22:34,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 07:22:34,073 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.8) internal successors, (72), 16 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-07 07:22:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:34,074 INFO L225 Difference]: With dead ends: 81 [2021-11-07 07:22:34,074 INFO L226 Difference]: Without dead ends: 80 [2021-11-07 07:22:34,075 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 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 07:22:34,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-07 07:22:34,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2021-11-07 07:22:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 77 states have (on average 1.025974025974026) internal successors, (79), 78 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:34,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2021-11-07 07:22:34,078 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 72 [2021-11-07 07:22:34,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:34,079 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2021-11-07 07:22:34,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.8) internal successors, (72), 16 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:34,079 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2021-11-07 07:22:34,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-07 07:22:34,080 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:34,080 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1] [2021-11-07 07:22:34,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:34,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:34,293 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:34,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:34,293 INFO L85 PathProgramCache]: Analyzing trace with hash 197564965, now seen corresponding path program 14 times [2021-11-07 07:22:34,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:34,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102721979] [2021-11-07 07:22:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:34,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:34,652 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:34,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:34,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102721979] [2021-11-07 07:22:34,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102721979] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:34,653 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007414265] [2021-11-07 07:22:34,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:34,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:34,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:34,654 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:34,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-07 07:22:35,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:35,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:35,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 07:22:35,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:35,260 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:35,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007414265] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:35,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:35,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-11-07 07:22:35,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586925293] [2021-11-07 07:22:35,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 07:22:35,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:35,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 07:22:35,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=817, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:22:35,262 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:35,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:35,523 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-11-07 07:22:35,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 07:22:35,524 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 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 75 [2021-11-07 07:22:35,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:35,526 INFO L225 Difference]: With dead ends: 84 [2021-11-07 07:22:35,526 INFO L226 Difference]: Without dead ends: 83 [2021-11-07 07:22:35,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=682, Invalid=1670, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 07:22:35,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-11-07 07:22:35,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-11-07 07:22:35,532 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 07:22:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-11-07 07:22:35,533 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2021-11-07 07:22:35,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:35,533 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-11-07 07:22:35,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:35,534 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-11-07 07:22:35,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 07:22:35,534 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:35,535 INFO L513 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1] [2021-11-07 07:22:35,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:35,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:35,757 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:35,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:35,757 INFO L85 PathProgramCache]: Analyzing trace with hash 881371943, now seen corresponding path program 14 times [2021-11-07 07:22:35,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:35,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063577221] [2021-11-07 07:22:35,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:35,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:35,925 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:35,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:35,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063577221] [2021-11-07 07:22:35,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063577221] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:35,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001199472] [2021-11-07 07:22:35,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:35,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:35,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:35,927 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:35,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-07 07:22:36,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:36,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:36,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-07 07:22:36,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:36,734 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:36,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001199472] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:36,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:36,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-11-07 07:22:36,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763239043] [2021-11-07 07:22:36,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 07:22:36,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:36,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 07:22:36,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-11-07 07:22:36,739 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 17 states, 16 states have (on average 4.8125) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:36,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:36,775 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2021-11-07 07:22:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 07:22:36,776 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.8125) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2021-11-07 07:22:36,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:36,777 INFO L225 Difference]: With dead ends: 86 [2021-11-07 07:22:36,777 INFO L226 Difference]: Without dead ends: 85 [2021-11-07 07:22:36,778 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 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 07:22:36,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-07 07:22:36,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2021-11-07 07:22:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 82 states have (on average 1.024390243902439) internal successors, (84), 83 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:36,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2021-11-07 07:22:36,781 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 77 [2021-11-07 07:22:36,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:36,781 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2021-11-07 07:22:36,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.8125) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:36,781 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2021-11-07 07:22:36,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 07:22:36,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:36,782 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1] [2021-11-07 07:22:36,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:36,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:36,993 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:36,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1816526833, now seen corresponding path program 15 times [2021-11-07 07:22:36,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:36,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910609318] [2021-11-07 07:22:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:36,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:37,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:37,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:37,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910609318] [2021-11-07 07:22:37,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910609318] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:37,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148081752] [2021-11-07 07:22:37,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:37,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:37,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:37,425 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:37,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-07 07:22:37,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-07 07:22:37,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:37,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 07:22:37,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:38,183 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:38,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148081752] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:38,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:38,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-11-07 07:22:38,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221548616] [2021-11-07 07:22:38,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 07:22:38,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:38,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 07:22:38,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=919, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 07:22:38,187 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand has 36 states, 35 states have (on average 2.4) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:38,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:38,552 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2021-11-07 07:22:38,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 07:22:38,552 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 2.4) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 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 07:22:38,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:38,553 INFO L225 Difference]: With dead ends: 89 [2021-11-07 07:22:38,553 INFO L226 Difference]: Without dead ends: 88 [2021-11-07 07:22:38,555 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=767, Invalid=1885, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:22:38,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-07 07:22:38,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2021-11-07 07:22:38,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 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 07:22:38,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2021-11-07 07:22:38,558 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2021-11-07 07:22:38,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:38,559 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2021-11-07 07:22:38,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 2.4) internal successors, (84), 36 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:38,559 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2021-11-07 07:22:38,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 07:22:38,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:38,560 INFO L513 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1, 1, 1] [2021-11-07 07:22:38,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:38,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:38,765 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:38,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:38,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1925565939, now seen corresponding path program 15 times [2021-11-07 07:22:38,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:38,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113075454] [2021-11-07 07:22:38,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:38,766 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:38,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:38,947 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:38,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:38,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113075454] [2021-11-07 07:22:38,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113075454] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:38,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649936745] [2021-11-07 07:22:38,947 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:38,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:38,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:38,949 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:38,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-07 07:22:39,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-07 07:22:39,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:39,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 07:22:39,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:39,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649936745] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:39,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:39,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-11-07 07:22:39,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510485493] [2021-11-07 07:22:39,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 07:22:39,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:39,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 07:22:39,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:22:39,783 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 18 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 07:22:39,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:39,828 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2021-11-07 07:22:39,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 07:22:39,829 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 18 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) Word has length 82 [2021-11-07 07:22:39,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:39,830 INFO L225 Difference]: With dead ends: 91 [2021-11-07 07:22:39,830 INFO L226 Difference]: Without dead ends: 90 [2021-11-07 07:22:39,831 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 82 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 07:22:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-07 07:22:39,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2021-11-07 07:22:39,833 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 07:22:39,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2021-11-07 07:22:39,834 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 82 [2021-11-07 07:22:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:39,835 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2021-11-07 07:22:39,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.823529411764706) internal successors, (82), 18 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 07:22:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2021-11-07 07:22:39,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 07:22:39,836 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:39,836 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1] [2021-11-07 07:22:39,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:40,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:40,049 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:40,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:40,049 INFO L85 PathProgramCache]: Analyzing trace with hash 951736741, now seen corresponding path program 16 times [2021-11-07 07:22:40,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:40,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38234875] [2021-11-07 07:22:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:40,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:40,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:40,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:40,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38234875] [2021-11-07 07:22:40,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38234875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:40,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237788711] [2021-11-07 07:22:40,526 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:22:40,526 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:40,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:40,527 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:40,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-07 07:22:41,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:22:41,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:41,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-07 07:22:41,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:41,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237788711] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:41,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:41,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-11-07 07:22:41,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111711474] [2021-11-07 07:22:41,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-07 07:22:41,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:41,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-07 07:22:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:22:41,361 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 38 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 07:22:41,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:41,671 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2021-11-07 07:22:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 07:22:41,672 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 38 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) Word has length 85 [2021-11-07 07:22:41,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:41,672 INFO L225 Difference]: With dead ends: 94 [2021-11-07 07:22:41,673 INFO L226 Difference]: Without dead ends: 93 [2021-11-07 07:22:41,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=857, Invalid=2113, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 07:22:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-07 07:22:41,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-11-07 07:22:41,677 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 07:22:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-11-07 07:22:41,677 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2021-11-07 07:22:41,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:41,677 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-11-07 07:22:41,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.4054054054054053) internal successors, (89), 38 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 07:22:41,678 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-11-07 07:22:41,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 07:22:41,678 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:41,678 INFO L513 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1, 1, 1] [2021-11-07 07:22:41,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:41,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:41,889 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:41,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:41,889 INFO L85 PathProgramCache]: Analyzing trace with hash -209024345, now seen corresponding path program 16 times [2021-11-07 07:22:41,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:41,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561603107] [2021-11-07 07:22:41,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:41,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:42,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:42,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561603107] [2021-11-07 07:22:42,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561603107] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:42,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299723145] [2021-11-07 07:22:42,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:22:42,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:42,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:42,094 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:42,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-07 07:22:42,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:22:42,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:42,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:22:42,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:42,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299723145] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:42,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:42,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-11-07 07:22:42,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061784566] [2021-11-07 07:22:42,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-07 07:22:42,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:42,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-07 07:22:42,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-11-07 07:22:42,840 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 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 07:22:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:42,915 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2021-11-07 07:22:42,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 07:22:42,916 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 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 07:22:42,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:42,917 INFO L225 Difference]: With dead ends: 96 [2021-11-07 07:22:42,917 INFO L226 Difference]: Without dead ends: 95 [2021-11-07 07:22:42,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 87 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 07:22:42,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-07 07:22:42,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-11-07 07:22:42,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 92 states have (on average 1.0217391304347827) internal successors, (94), 93 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 07:22:42,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2021-11-07 07:22:42,923 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 87 [2021-11-07 07:22:42,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:42,923 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2021-11-07 07:22:42,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.833333333333333) internal successors, (87), 19 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 07:22:42,924 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2021-11-07 07:22:42,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-11-07 07:22:42,926 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:42,927 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1] [2021-11-07 07:22:42,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:43,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:43,147 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:43,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:43,148 INFO L85 PathProgramCache]: Analyzing trace with hash 658370673, now seen corresponding path program 17 times [2021-11-07 07:22:43,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:43,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571089734] [2021-11-07 07:22:43,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:43,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:43,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:43,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571089734] [2021-11-07 07:22:43,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571089734] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:43,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13708755] [2021-11-07 07:22:43,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:22:43,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:43,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:43,698 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:43,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-07 07:22:44,233 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-07 07:22:44,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:44,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-07 07:22:44,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:44,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13708755] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:44,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:44,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-11-07 07:22:44,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045090013] [2021-11-07 07:22:44,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-07 07:22:44,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:44,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-07 07:22:44,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1141, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 07:22:44,653 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand has 40 states, 39 states have (on average 2.41025641025641) internal successors, (94), 40 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 07:22:44,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:44,984 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2021-11-07 07:22:44,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 07:22:44,984 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 2.41025641025641) internal successors, (94), 40 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 90 [2021-11-07 07:22:44,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:44,985 INFO L225 Difference]: With dead ends: 99 [2021-11-07 07:22:44,985 INFO L226 Difference]: Without dead ends: 98 [2021-11-07 07:22:44,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=952, Invalid=2354, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 07:22:44,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-07 07:22:44,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2021-11-07 07:22:44,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 96 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 07:22:44,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2021-11-07 07:22:44,990 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2021-11-07 07:22:44,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:44,991 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2021-11-07 07:22:44,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 2.41025641025641) internal successors, (94), 40 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 07:22:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2021-11-07 07:22:44,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-07 07:22:44,991 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:44,992 INFO L513 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1, 1] [2021-11-07 07:22:45,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:45,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-07 07:22:45,205 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:45,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:45,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1334025843, now seen corresponding path program 17 times [2021-11-07 07:22:45,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:45,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820183671] [2021-11-07 07:22:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:45,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:45,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:45,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820183671] [2021-11-07 07:22:45,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820183671] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:45,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945550136] [2021-11-07 07:22:45,423 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:22:45,424 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:45,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:45,426 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:45,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-07 07:22:45,969 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-07 07:22:45,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:45,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 07:22:45,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:46,190 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:46,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945550136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:46,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:46,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-11-07 07:22:46,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433122315] [2021-11-07 07:22:46,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-07 07:22:46,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:46,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-07 07:22:46,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-11-07 07:22:46,192 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 20 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 07:22:46,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:46,272 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2021-11-07 07:22:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 07:22:46,272 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 20 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) Word has length 92 [2021-11-07 07:22:46,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:46,273 INFO L225 Difference]: With dead ends: 101 [2021-11-07 07:22:46,274 INFO L226 Difference]: Without dead ends: 100 [2021-11-07 07:22:46,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 92 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 07:22:46,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-07 07:22:46,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2021-11-07 07:22:46,281 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 07:22:46,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2021-11-07 07:22:46,283 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 92 [2021-11-07 07:22:46,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:46,284 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2021-11-07 07:22:46,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.842105263157895) internal successors, (92), 20 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 07:22:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2021-11-07 07:22:46,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 07:22:46,284 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:46,284 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1] [2021-11-07 07:22:46,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:46,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-07 07:22:46,497 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash 631552293, now seen corresponding path program 18 times [2021-11-07 07:22:46,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:46,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803783997] [2021-11-07 07:22:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:46,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:46,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:47,024 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:47,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:47,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803783997] [2021-11-07 07:22:47,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803783997] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:47,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [177855881] [2021-11-07 07:22:47,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:22:47,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:47,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:47,026 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:47,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-07 07:22:47,605 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-07 07:22:47,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:47,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-07 07:22:47,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:47,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [177855881] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:47,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:47,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-11-07 07:22:47,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029175360] [2021-11-07 07:22:47,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-07 07:22:47,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:47,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-07 07:22:47,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=1261, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 07:22:47,951 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand has 42 states, 41 states have (on average 2.4146341463414633) internal successors, (99), 42 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 07:22:48,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:48,289 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2021-11-07 07:22:48,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-07 07:22:48,289 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.4146341463414633) internal successors, (99), 42 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) Word has length 95 [2021-11-07 07:22:48,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:48,290 INFO L225 Difference]: With dead ends: 104 [2021-11-07 07:22:48,290 INFO L226 Difference]: Without dead ends: 103 [2021-11-07 07:22:48,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1052, Invalid=2608, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 07:22:48,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-11-07 07:22:48,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-11-07 07:22:48,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2021-11-07 07:22:48,295 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2021-11-07 07:22:48,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:48,296 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2021-11-07 07:22:48,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.4146341463414633) internal successors, (99), 42 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 07:22:48,296 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2021-11-07 07:22:48,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 07:22:48,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:48,297 INFO L513 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1, 1, 1] [2021-11-07 07:22:48,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:48,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-07 07:22:48,517 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:48,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1331366439, now seen corresponding path program 18 times [2021-11-07 07:22:48,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:48,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351205541] [2021-11-07 07:22:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:48,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:48,737 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:48,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:48,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351205541] [2021-11-07 07:22:48,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351205541] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:48,738 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633242693] [2021-11-07 07:22:48,738 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:22:48,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:48,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:48,739 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:48,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-07 07:22:49,368 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-07 07:22:49,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:49,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-07 07:22:49,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:49,632 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:49,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633242693] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:49,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:49,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-11-07 07:22:49,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404137624] [2021-11-07 07:22:49,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 07:22:49,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:49,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 07:22:49,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-11-07 07:22:49,634 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand has 21 states, 20 states have (on average 4.85) internal successors, (97), 21 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 07:22:49,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:49,698 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2021-11-07 07:22:49,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-07 07:22:49,698 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.85) internal successors, (97), 21 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 07:22:49,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:49,699 INFO L225 Difference]: With dead ends: 106 [2021-11-07 07:22:49,699 INFO L226 Difference]: Without dead ends: 105 [2021-11-07 07:22:49,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 97 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 07:22:49,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-11-07 07:22:49,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2021-11-07 07:22:49,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 102 states have (on average 1.0196078431372548) internal successors, (104), 103 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 07:22:49,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2021-11-07 07:22:49,703 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 97 [2021-11-07 07:22:49,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:49,704 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2021-11-07 07:22:49,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.85) internal successors, (97), 21 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 07:22:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2021-11-07 07:22:49,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-07 07:22:49,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:49,705 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1] [2021-11-07 07:22:49,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-11-07 07:22:49,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-07 07:22:49,909 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:49,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1285340943, now seen corresponding path program 19 times [2021-11-07 07:22:49,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:49,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051840286] [2021-11-07 07:22:49,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:49,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:50,614 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:50,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:50,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051840286] [2021-11-07 07:22:50,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051840286] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:50,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641060244] [2021-11-07 07:22:50,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:22:50,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:50,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:50,617 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:50,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-07 07:22:51,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:51,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 07:22:51,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:51,702 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:51,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641060244] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:51,702 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:51,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-11-07 07:22:51,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937416180] [2021-11-07 07:22:51,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-07 07:22:51,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:51,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-07 07:22:51,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=505, Invalid=1387, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 07:22:51,704 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand has 44 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 44 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 07:22:52,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:52,121 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions. [2021-11-07 07:22:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-07 07:22:52,122 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 44 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 100 [2021-11-07 07:22:52,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:52,123 INFO L225 Difference]: With dead ends: 109 [2021-11-07 07:22:52,123 INFO L226 Difference]: Without dead ends: 108 [2021-11-07 07:22:52,125 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 699 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1157, Invalid=2875, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 07:22:52,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-11-07 07:22:52,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2021-11-07 07:22:52,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 105 states have (on average 1.019047619047619) internal successors, (107), 106 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:52,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 107 transitions. [2021-11-07 07:22:52,129 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 107 transitions. Word has length 100 [2021-11-07 07:22:52,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:52,130 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 107 transitions. [2021-11-07 07:22:52,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 2.4186046511627906) internal successors, (104), 44 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 07:22:52,130 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 107 transitions. [2021-11-07 07:22:52,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-07 07:22:52,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:52,132 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1, 1, 1] [2021-11-07 07:22:52,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:52,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:52,332 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:52,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:52,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1737936627, now seen corresponding path program 19 times [2021-11-07 07:22:52,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:52,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254004225] [2021-11-07 07:22:52,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:52,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:52,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:52,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254004225] [2021-11-07 07:22:52,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254004225] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:52,626 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484902475] [2021-11-07 07:22:52,626 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:22:52,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:52,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:52,627 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:52,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-07 07:22:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:53,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 07:22:53,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 0 proven. 931 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:53,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484902475] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:53,590 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:53,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2021-11-07 07:22:53,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202078524] [2021-11-07 07:22:53,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-07 07:22:53,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:53,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-07 07:22:53,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:22:53,591 INFO L87 Difference]: Start difference. First operand 107 states and 107 transitions. Second operand has 22 states, 21 states have (on average 4.857142857142857) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:53,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:53,648 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2021-11-07 07:22:53,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 07:22:53,648 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.857142857142857) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2021-11-07 07:22:53,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:53,649 INFO L225 Difference]: With dead ends: 111 [2021-11-07 07:22:53,649 INFO L226 Difference]: Without dead ends: 110 [2021-11-07 07:22:53,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-11-07 07:22:53,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-07 07:22:53,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2021-11-07 07:22:53,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 108 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:53,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2021-11-07 07:22:53,653 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 102 [2021-11-07 07:22:53,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:53,653 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2021-11-07 07:22:53,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.857142857142857) internal successors, (102), 22 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:53,654 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2021-11-07 07:22:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-07 07:22:53,655 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:53,655 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 1, 1, 1, 1] [2021-11-07 07:22:53,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-07 07:22:53,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:53,881 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:53,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:53,881 INFO L85 PathProgramCache]: Analyzing trace with hash -960644955, now seen corresponding path program 20 times [2021-11-07 07:22:53,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:53,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414214252] [2021-11-07 07:22:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:53,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:54,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:54,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414214252] [2021-11-07 07:22:54,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414214252] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:54,613 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987247072] [2021-11-07 07:22:54,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:54,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:54,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:54,621 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:54,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-07 07:22:55,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:55,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:55,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-07 07:22:55,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:55,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987247072] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:55,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:55,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 45 [2021-11-07 07:22:55,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260004801] [2021-11-07 07:22:55,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-07 07:22:55,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:55,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-07 07:22:55,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 07:22:55,675 INFO L87 Difference]: Start difference. First operand 109 states and 109 transitions. Second operand has 46 states, 45 states have (on average 2.422222222222222) internal successors, (109), 46 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:56,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:56,135 INFO L93 Difference]: Finished difference Result 114 states and 114 transitions. [2021-11-07 07:22:56,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 07:22:56,135 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.422222222222222) internal successors, (109), 46 states have internal predecessors, (109), 0 states have call successors, (0), 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 105 [2021-11-07 07:22:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:56,136 INFO L225 Difference]: With dead ends: 114 [2021-11-07 07:22:56,136 INFO L226 Difference]: Without dead ends: 113 [2021-11-07 07:22:56,137 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 766 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1267, Invalid=3155, Unknown=0, NotChecked=0, Total=4422 [2021-11-07 07:22:56,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-11-07 07:22:56,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2021-11-07 07:22:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 1.018181818181818) internal successors, (112), 111 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions. [2021-11-07 07:22:56,141 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 105 [2021-11-07 07:22:56,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:56,141 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions. [2021-11-07 07:22:56,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.422222222222222) internal successors, (109), 46 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions. [2021-11-07 07:22:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 07:22:56,142 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:56,142 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 1, 1, 1, 1] [2021-11-07 07:22:56,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2021-11-07 07:22:56,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:56,345 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:56,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:56,345 INFO L85 PathProgramCache]: Analyzing trace with hash 238168487, now seen corresponding path program 20 times [2021-11-07 07:22:56,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:56,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920706852] [2021-11-07 07:22:56,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:56,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:56,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:56,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920706852] [2021-11-07 07:22:56,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920706852] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:56,615 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185180233] [2021-11-07 07:22:56,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:22:56,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:56,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:56,616 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:56,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-07 07:22:57,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:22:57,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:57,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-07 07:22:57,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:22:57,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1030 backedges. 0 proven. 1030 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:57,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185180233] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:57,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:22:57,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2021-11-07 07:22:57,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037121546] [2021-11-07 07:22:57,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-07 07:22:57,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:22:57,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-07 07:22:57,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2021-11-07 07:22:57,692 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand has 23 states, 22 states have (on average 4.863636363636363) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:57,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:22:57,757 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2021-11-07 07:22:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 07:22:57,757 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.863636363636363) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2021-11-07 07:22:57,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:22:57,759 INFO L225 Difference]: With dead ends: 116 [2021-11-07 07:22:57,759 INFO L226 Difference]: Without dead ends: 115 [2021-11-07 07:22:57,759 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 107 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 07:22:57,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-11-07 07:22:57,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2021-11-07 07:22:57,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 112 states have (on average 1.0178571428571428) internal successors, (114), 113 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions. [2021-11-07 07:22:57,764 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 107 [2021-11-07 07:22:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:22:57,764 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions. [2021-11-07 07:22:57,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.863636363636363) internal successors, (107), 23 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:22:57,765 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions. [2021-11-07 07:22:57,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 07:22:57,765 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:22:57,765 INFO L513 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 1, 1, 1, 1] [2021-11-07 07:22:57,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-11-07 07:22:57,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:57,966 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:22:57,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:22:57,966 INFO L85 PathProgramCache]: Analyzing trace with hash -8523407, now seen corresponding path program 21 times [2021-11-07 07:22:57,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:22:57,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597256327] [2021-11-07 07:22:57,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:22:57,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:22:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:22:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:22:58,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:22:58,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597256327] [2021-11-07 07:22:58,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597256327] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:22:58,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185117320] [2021-11-07 07:22:58,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:22:58,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:22:58,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:22:58,820 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:22:58,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-07 07:22:59,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-07 07:22:59,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:22:59,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-07 07:22:59,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 0 proven. 1092 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:00,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185117320] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:00,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:00,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 47 [2021-11-07 07:23:00,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639721692] [2021-11-07 07:23:00,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 07:23:00,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:00,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 07:23:00,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 07:23:00,128 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand has 48 states, 47 states have (on average 2.425531914893617) internal successors, (114), 48 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:00,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:00,673 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions. [2021-11-07 07:23:00,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-07 07:23:00,674 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.425531914893617) internal successors, (114), 48 states have internal predecessors, (114), 0 states have call successors, (0), 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 110 [2021-11-07 07:23:00,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:00,675 INFO L225 Difference]: With dead ends: 119 [2021-11-07 07:23:00,675 INFO L226 Difference]: Without dead ends: 118 [2021-11-07 07:23:00,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1382, Invalid=3448, Unknown=0, NotChecked=0, Total=4830 [2021-11-07 07:23:00,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-11-07 07:23:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2021-11-07 07:23:00,679 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 07:23:00,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 117 transitions. [2021-11-07 07:23:00,680 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 117 transitions. Word has length 110 [2021-11-07 07:23:00,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:00,680 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 117 transitions. [2021-11-07 07:23:00,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.425531914893617) internal successors, (114), 48 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:00,680 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 117 transitions. [2021-11-07 07:23:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 07:23:00,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:00,681 INFO L513 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 1, 1, 1, 1] [2021-11-07 07:23:00,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:00,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-07 07:23:00,882 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:00,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:00,882 INFO L85 PathProgramCache]: Analyzing trace with hash 398942067, now seen corresponding path program 21 times [2021-11-07 07:23:00,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:00,883 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259893228] [2021-11-07 07:23:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:00,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:01,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:01,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259893228] [2021-11-07 07:23:01,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259893228] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:01,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614937765] [2021-11-07 07:23:01,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:23:01,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:01,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:01,259 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:01,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-07 07:23:02,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-11-07 07:23:02,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:02,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-07 07:23:02,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:02,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1134 backedges. 0 proven. 1134 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:02,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614937765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:02,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:02,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2021-11-07 07:23:02,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701157573] [2021-11-07 07:23:02,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-07 07:23:02,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-07 07:23:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-11-07 07:23:02,603 INFO L87 Difference]: Start difference. First operand 117 states and 117 transitions. Second operand has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:02,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:02,682 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2021-11-07 07:23:02,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 07:23:02,683 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 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 112 [2021-11-07 07:23:02,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:02,684 INFO L225 Difference]: With dead ends: 121 [2021-11-07 07:23:02,684 INFO L226 Difference]: Without dead ends: 120 [2021-11-07 07:23:02,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 112 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 07:23:02,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-07 07:23:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2021-11-07 07:23:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2021-11-07 07:23:02,690 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 112 [2021-11-07 07:23:02,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:02,690 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2021-11-07 07:23:02,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:02,690 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2021-11-07 07:23:02,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-07 07:23:02,691 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:02,691 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-11-07 07:23:02,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:02,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-07 07:23:02,917 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:02,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:02,917 INFO L85 PathProgramCache]: Analyzing trace with hash 708663333, now seen corresponding path program 22 times [2021-11-07 07:23:02,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:02,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397297490] [2021-11-07 07:23:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:02,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:03,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:03,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:03,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397297490] [2021-11-07 07:23:03,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397297490] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:03,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920267540] [2021-11-07 07:23:03,814 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:23:03,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:03,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:03,815 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:03,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-07 07:23:04,727 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:23:04,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:04,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-07 07:23:04,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:05,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:05,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920267540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:05,078 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:05,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 49 [2021-11-07 07:23:05,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67662082] [2021-11-07 07:23:05,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-07 07:23:05,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:05,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-07 07:23:05,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=649, Invalid=1801, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 07:23:05,080 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 50 states, 49 states have (on average 2.4285714285714284) internal successors, (119), 50 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:05,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:05,559 INFO L93 Difference]: Finished difference Result 124 states and 124 transitions. [2021-11-07 07:23:05,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 07:23:05,560 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 2.4285714285714284) internal successors, (119), 50 states have internal predecessors, (119), 0 states have call successors, (0), 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 07:23:05,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:05,561 INFO L225 Difference]: With dead ends: 124 [2021-11-07 07:23:05,561 INFO L226 Difference]: Without dead ends: 123 [2021-11-07 07:23:05,562 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1502, Invalid=3754, Unknown=0, NotChecked=0, Total=5256 [2021-11-07 07:23:05,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-07 07:23:05,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2021-11-07 07:23:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 121 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 07:23:05,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2021-11-07 07:23:05,566 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 115 [2021-11-07 07:23:05,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:05,566 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2021-11-07 07:23:05,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 2.4285714285714284) internal successors, (119), 50 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:05,567 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2021-11-07 07:23:05,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-07 07:23:05,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:05,568 INFO L513 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2021-11-07 07:23:05,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:05,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-07 07:23:05,777 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:05,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:05,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1874335449, now seen corresponding path program 22 times [2021-11-07 07:23:05,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:05,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2150947] [2021-11-07 07:23:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:05,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:06,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:06,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:06,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2150947] [2021-11-07 07:23:06,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2150947] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:06,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883890280] [2021-11-07 07:23:06,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:23:06,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:06,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:06,097 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:06,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-07 07:23:07,029 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:23:07,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:07,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 07:23:07,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:07,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883890280] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:07,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:07,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2021-11-07 07:23:07,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523363794] [2021-11-07 07:23:07,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-07 07:23:07,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:07,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-07 07:23:07,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-11-07 07:23:07,341 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 25 states, 24 states have (on average 4.875) internal successors, (117), 25 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 07:23:07,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:07,410 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2021-11-07 07:23:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 07:23:07,410 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.875) internal successors, (117), 25 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) Word has length 117 [2021-11-07 07:23:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:07,411 INFO L225 Difference]: With dead ends: 126 [2021-11-07 07:23:07,411 INFO L226 Difference]: Without dead ends: 125 [2021-11-07 07:23:07,412 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 117 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 07:23:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-07 07:23:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-11-07 07:23:07,415 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 07:23:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions. [2021-11-07 07:23:07,416 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 117 [2021-11-07 07:23:07,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:07,417 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions. [2021-11-07 07:23:07,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.875) internal successors, (117), 25 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 07:23:07,417 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions. [2021-11-07 07:23:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-07 07:23:07,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:07,418 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 23, 1, 1, 1, 1] [2021-11-07 07:23:07,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:07,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-07 07:23:07,633 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:07,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:07,633 INFO L85 PathProgramCache]: Analyzing trace with hash 542507505, now seen corresponding path program 23 times [2021-11-07 07:23:07,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:07,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539586718] [2021-11-07 07:23:07,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:07,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:08,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:08,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539586718] [2021-11-07 07:23:08,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539586718] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:08,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470209952] [2021-11-07 07:23:08,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:23:08,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:08,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:08,639 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:08,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-07 07:23:09,738 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-07 07:23:09,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:09,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-07 07:23:09,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:10,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1311 backedges. 0 proven. 1311 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:10,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470209952] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:10,152 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:10,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 51 [2021-11-07 07:23:10,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951187879] [2021-11-07 07:23:10,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-07 07:23:10,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:10,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-07 07:23:10,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=701, Invalid=1951, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:23:10,154 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand has 52 states, 51 states have (on average 2.4313725490196076) internal successors, (124), 52 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 07:23:10,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:10,743 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions. [2021-11-07 07:23:10,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 07:23:10,744 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.4313725490196076) internal successors, (124), 52 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) Word has length 120 [2021-11-07 07:23:10,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:10,745 INFO L225 Difference]: With dead ends: 129 [2021-11-07 07:23:10,746 INFO L226 Difference]: Without dead ends: 128 [2021-11-07 07:23:10,746 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1627, Invalid=4073, Unknown=0, NotChecked=0, Total=5700 [2021-11-07 07:23:10,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-07 07:23:10,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2021-11-07 07:23:10,750 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 07:23:10,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 127 transitions. [2021-11-07 07:23:10,751 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 127 transitions. Word has length 120 [2021-11-07 07:23:10,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:10,751 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 127 transitions. [2021-11-07 07:23:10,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.4313725490196076) internal successors, (124), 52 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 07:23:10,752 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 127 transitions. [2021-11-07 07:23:10,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 07:23:10,754 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:10,754 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 1, 1, 1, 1] [2021-11-07 07:23:10,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:10,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:10,969 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:10,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:10,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1658671091, now seen corresponding path program 23 times [2021-11-07 07:23:10,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:10,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234773392] [2021-11-07 07:23:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:10,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:10,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:11,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:11,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234773392] [2021-11-07 07:23:11,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234773392] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:11,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652026882] [2021-11-07 07:23:11,326 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:23:11,326 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:11,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:11,327 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:11,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-07 07:23:12,363 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-11-07 07:23:12,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:12,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-07 07:23:12,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:12,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1357 backedges. 0 proven. 1357 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:12,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652026882] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:12,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:12,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2021-11-07 07:23:12,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096390319] [2021-11-07 07:23:12,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 07:23:12,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:12,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 07:23:12,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2021-11-07 07:23:12,684 INFO L87 Difference]: Start difference. First operand 127 states and 127 transitions. Second operand has 26 states, 25 states have (on average 4.88) internal successors, (122), 26 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 07:23:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:12,739 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions. [2021-11-07 07:23:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-07 07:23:12,740 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.88) internal successors, (122), 26 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 07:23:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:12,741 INFO L225 Difference]: With dead ends: 131 [2021-11-07 07:23:12,741 INFO L226 Difference]: Without dead ends: 130 [2021-11-07 07:23:12,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 122 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 07:23:12,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-07 07:23:12,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 129. [2021-11-07 07:23:12,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 127 states have (on average 1.015748031496063) internal successors, (129), 128 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 07:23:12,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 129 transitions. [2021-11-07 07:23:12,747 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 129 transitions. Word has length 122 [2021-11-07 07:23:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:12,747 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 129 transitions. [2021-11-07 07:23:12,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.88) internal successors, (122), 26 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 07:23:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 129 transitions. [2021-11-07 07:23:12,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 07:23:12,749 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:12,749 INFO L513 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 24, 1, 1, 1, 1] [2021-11-07 07:23:12,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:12,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-07 07:23:12,953 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:12,953 INFO L85 PathProgramCache]: Analyzing trace with hash -128215131, now seen corresponding path program 24 times [2021-11-07 07:23:12,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:12,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819647603] [2021-11-07 07:23:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:12,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:13,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:13,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819647603] [2021-11-07 07:23:13,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819647603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:13,818 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009988112] [2021-11-07 07:23:13,818 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:23:13,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:13,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:13,819 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:13,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-07 07:23:14,875 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-07 07:23:14,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:14,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-07 07:23:14,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:15,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:15,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009988112] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:15,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:15,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 53 [2021-11-07 07:23:15,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246695934] [2021-11-07 07:23:15,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-07 07:23:15,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:15,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-07 07:23:15,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=755, Invalid=2107, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 07:23:15,308 INFO L87 Difference]: Start difference. First operand 129 states and 129 transitions. Second operand has 54 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 54 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 07:23:15,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:15,874 INFO L93 Difference]: Finished difference Result 134 states and 134 transitions. [2021-11-07 07:23:15,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-07 07:23:15,875 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 54 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 125 [2021-11-07 07:23:15,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:15,876 INFO L225 Difference]: With dead ends: 134 [2021-11-07 07:23:15,876 INFO L226 Difference]: Without dead ends: 133 [2021-11-07 07:23:15,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1064 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1757, Invalid=4405, Unknown=0, NotChecked=0, Total=6162 [2021-11-07 07:23:15,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-07 07:23:15,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 132. [2021-11-07 07:23:15,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 130 states have (on average 1.0153846153846153) internal successors, (132), 131 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 07:23:15,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions. [2021-11-07 07:23:15,883 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 125 [2021-11-07 07:23:15,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:15,883 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions. [2021-11-07 07:23:15,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.4339622641509435) internal successors, (129), 54 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 07:23:15,884 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions. [2021-11-07 07:23:15,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-07 07:23:15,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:15,885 INFO L513 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 1, 1, 1, 1] [2021-11-07 07:23:15,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:16,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2021-11-07 07:23:16,086 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:16,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:16,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1339312295, now seen corresponding path program 24 times [2021-11-07 07:23:16,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:16,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11532147] [2021-11-07 07:23:16,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:16,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:16,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:16,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:16,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:16,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11532147] [2021-11-07 07:23:16,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11532147] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:16,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721641039] [2021-11-07 07:23:16,477 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:23:16,477 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:16,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:16,479 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:16,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-07 07:23:17,629 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-11-07 07:23:17,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:17,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-07 07:23:17,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1476 backedges. 0 proven. 1476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:17,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721641039] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:17,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:17,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2021-11-07 07:23:17,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431938195] [2021-11-07 07:23:17,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-07 07:23:17,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:17,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-07 07:23:17,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2021-11-07 07:23:17,978 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand has 27 states, 26 states have (on average 4.884615384615385) internal successors, (127), 27 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 07:23:18,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:18,045 INFO L93 Difference]: Finished difference Result 136 states and 136 transitions. [2021-11-07 07:23:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 07:23:18,046 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.884615384615385) internal successors, (127), 27 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) Word has length 127 [2021-11-07 07:23:18,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:18,047 INFO L225 Difference]: With dead ends: 136 [2021-11-07 07:23:18,047 INFO L226 Difference]: Without dead ends: 135 [2021-11-07 07:23:18,048 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 127 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 07:23:18,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-07 07:23:18,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-11-07 07:23:18,053 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 07:23:18,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-11-07 07:23:18,054 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 127 [2021-11-07 07:23:18,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:18,055 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-11-07 07:23:18,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.884615384615385) internal successors, (127), 27 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 07:23:18,056 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-11-07 07:23:18,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 07:23:18,057 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:18,057 INFO L513 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 25, 1, 1, 1, 1] [2021-11-07 07:23:18,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:18,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:18,285 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash -793546127, now seen corresponding path program 25 times [2021-11-07 07:23:18,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:18,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50178054] [2021-11-07 07:23:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:18,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:19,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:19,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:19,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50178054] [2021-11-07 07:23:19,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50178054] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:19,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050735195] [2021-11-07 07:23:19,344 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:23:19,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:19,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:19,347 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:19,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-07 07:23:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:20,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-07 07:23:20,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1550 backedges. 0 proven. 1550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:20,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050735195] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:20,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:20,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 55 [2021-11-07 07:23:20,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789630236] [2021-11-07 07:23:20,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-07 07:23:20,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:20,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-07 07:23:20,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=811, Invalid=2269, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 07:23:20,815 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 56 states, 55 states have (on average 2.4363636363636365) internal successors, (134), 56 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 07:23:21,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:21,480 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions. [2021-11-07 07:23:21,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-07 07:23:21,480 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.4363636363636365) internal successors, (134), 56 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) Word has length 130 [2021-11-07 07:23:21,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:21,485 INFO L225 Difference]: With dead ends: 139 [2021-11-07 07:23:21,485 INFO L226 Difference]: Without dead ends: 138 [2021-11-07 07:23:21,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1146 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1892, Invalid=4750, Unknown=0, NotChecked=0, Total=6642 [2021-11-07 07:23:21,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-07 07:23:21,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 137. [2021-11-07 07:23:21,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 136 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:21,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 137 transitions. [2021-11-07 07:23:21,491 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 137 transitions. Word has length 130 [2021-11-07 07:23:21,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:21,492 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 137 transitions. [2021-11-07 07:23:21,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.4363636363636365) internal successors, (134), 56 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 07:23:21,492 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 137 transitions. [2021-11-07 07:23:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-11-07 07:23:21,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:21,493 INFO L513 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 1, 1, 1, 1] [2021-11-07 07:23:21,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:21,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:21,709 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:21,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:21,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1906352243, now seen corresponding path program 25 times [2021-11-07 07:23:21,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:21,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090851296] [2021-11-07 07:23:21,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:21,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:22,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:22,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090851296] [2021-11-07 07:23:22,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090851296] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:22,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139401602] [2021-11-07 07:23:22,115 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:23:22,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:22,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:22,119 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:22,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-07 07:23:23,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:23,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-07 07:23:23,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 1600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:23,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139401602] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:23,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:23,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2021-11-07 07:23:23,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378931498] [2021-11-07 07:23:23,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 07:23:23,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:23,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 07:23:23,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:23:23,908 INFO L87 Difference]: Start difference. First operand 137 states and 137 transitions. Second operand has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 28 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 07:23:23,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:23,990 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions. [2021-11-07 07:23:23,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-07 07:23:23,991 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 28 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 07:23:23,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:23,992 INFO L225 Difference]: With dead ends: 141 [2021-11-07 07:23:23,992 INFO L226 Difference]: Without dead ends: 140 [2021-11-07 07:23:23,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2021-11-07 07:23:23,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-11-07 07:23:23,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2021-11-07 07:23:23,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 138 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 07:23:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 139 transitions. [2021-11-07 07:23:23,997 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 139 transitions. Word has length 132 [2021-11-07 07:23:23,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:23,998 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 139 transitions. [2021-11-07 07:23:23,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 28 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 07:23:23,998 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 139 transitions. [2021-11-07 07:23:23,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-07 07:23:24,000 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:24,000 INFO L513 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 26, 1, 1, 1, 1] [2021-11-07 07:23:24,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-11-07 07:23:24,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-11-07 07:23:24,225 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:24,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:24,225 INFO L85 PathProgramCache]: Analyzing trace with hash -212830427, now seen corresponding path program 26 times [2021-11-07 07:23:24,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:24,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247995900] [2021-11-07 07:23:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:24,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:25,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:25,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247995900] [2021-11-07 07:23:25,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247995900] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:25,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285077945] [2021-11-07 07:23:25,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:23:25,254 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:25,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:25,255 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:25,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-07 07:23:26,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:23:26,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:26,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-07 07:23:26,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 1677 backedges. 0 proven. 1677 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:26,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285077945] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:26,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:26,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 57 [2021-11-07 07:23:26,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430861937] [2021-11-07 07:23:26,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-07 07:23:26,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:26,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-07 07:23:26,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=869, Invalid=2437, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 07:23:26,951 INFO L87 Difference]: Start difference. First operand 139 states and 139 transitions. Second operand has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 58 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 07:23:27,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:27,535 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2021-11-07 07:23:27,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-07 07:23:27,536 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 58 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 135 [2021-11-07 07:23:27,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:27,537 INFO L225 Difference]: With dead ends: 144 [2021-11-07 07:23:27,537 INFO L226 Difference]: Without dead ends: 143 [2021-11-07 07:23:27,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1231 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2032, Invalid=5108, Unknown=0, NotChecked=0, Total=7140 [2021-11-07 07:23:27,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-11-07 07:23:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 142. [2021-11-07 07:23:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 140 states have (on average 1.0142857142857142) internal successors, (142), 141 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:27,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions. [2021-11-07 07:23:27,543 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 135 [2021-11-07 07:23:27,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:27,543 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions. [2021-11-07 07:23:27,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 58 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 07:23:27,544 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions. [2021-11-07 07:23:27,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-07 07:23:27,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:27,545 INFO L513 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 1, 1, 1, 1] [2021-11-07 07:23:27,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:27,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-11-07 07:23:27,773 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1628391463, now seen corresponding path program 26 times [2021-11-07 07:23:27,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:27,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964678473] [2021-11-07 07:23:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:27,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:28,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:28,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964678473] [2021-11-07 07:23:28,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964678473] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:28,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290509298] [2021-11-07 07:23:28,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:23:28,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:28,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:28,193 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:28,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-07 07:23:29,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:23:29,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:29,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-07 07:23:29,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:29,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1729 backedges. 0 proven. 1729 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:29,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290509298] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:29,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:29,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2021-11-07 07:23:29,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32531366] [2021-11-07 07:23:29,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 07:23:29,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:29,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 07:23:29,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2021-11-07 07:23:29,782 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand has 29 states, 28 states have (on average 4.892857142857143) internal successors, (137), 29 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:29,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:29,848 INFO L93 Difference]: Finished difference Result 146 states and 146 transitions. [2021-11-07 07:23:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-07 07:23:29,849 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 4.892857142857143) internal successors, (137), 29 states have internal predecessors, (137), 0 states have call successors, (0), 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 137 [2021-11-07 07:23:29,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:29,850 INFO L225 Difference]: With dead ends: 146 [2021-11-07 07:23:29,850 INFO L226 Difference]: Without dead ends: 145 [2021-11-07 07:23:29,850 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 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 07:23:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-11-07 07:23:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2021-11-07 07:23:29,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 142 states have (on average 1.0140845070422535) internal successors, (144), 143 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions. [2021-11-07 07:23:29,855 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 137 [2021-11-07 07:23:29,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:29,855 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions. [2021-11-07 07:23:29,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 4.892857142857143) internal successors, (137), 29 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions. [2021-11-07 07:23:29,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-07 07:23:29,857 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:29,857 INFO L513 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 27, 1, 1, 1, 1] [2021-11-07 07:23:29,886 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:30,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:30,074 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:30,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:30,074 INFO L85 PathProgramCache]: Analyzing trace with hash -245480719, now seen corresponding path program 27 times [2021-11-07 07:23:30,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:30,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125271492] [2021-11-07 07:23:30,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:30,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:31,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:31,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:31,087 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125271492] [2021-11-07 07:23:31,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125271492] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:31,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517497542] [2021-11-07 07:23:31,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:23:31,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:31,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:31,098 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:31,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-07 07:23:32,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-07 07:23:32,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:32,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-07 07:23:32,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 0 proven. 1809 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:32,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517497542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:32,843 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:32,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 59 [2021-11-07 07:23:32,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602267064] [2021-11-07 07:23:32,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-07 07:23:32,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:32,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-07 07:23:32,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=929, Invalid=2611, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 07:23:32,846 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand has 60 states, 59 states have (on average 2.440677966101695) internal successors, (144), 60 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:33,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:33,443 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions. [2021-11-07 07:23:33,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-07 07:23:33,443 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 2.440677966101695) internal successors, (144), 60 states have internal predecessors, (144), 0 states have call successors, (0), 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 140 [2021-11-07 07:23:33,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:33,444 INFO L225 Difference]: With dead ends: 149 [2021-11-07 07:23:33,444 INFO L226 Difference]: Without dead ends: 148 [2021-11-07 07:23:33,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2177, Invalid=5479, Unknown=0, NotChecked=0, Total=7656 [2021-11-07 07:23:33,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-07 07:23:33,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 147. [2021-11-07 07:23:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 145 states have (on average 1.013793103448276) internal successors, (147), 146 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 147 transitions. [2021-11-07 07:23:33,449 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 147 transitions. Word has length 140 [2021-11-07 07:23:33,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:33,449 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 147 transitions. [2021-11-07 07:23:33,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 2.440677966101695) internal successors, (144), 60 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:33,450 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 147 transitions. [2021-11-07 07:23:33,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-07 07:23:33,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:33,451 INFO L513 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 1, 1, 1, 1] [2021-11-07 07:23:33,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:33,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:33,661 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:33,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:33,662 INFO L85 PathProgramCache]: Analyzing trace with hash 316231923, now seen corresponding path program 27 times [2021-11-07 07:23:33,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:33,662 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436977186] [2021-11-07 07:23:33,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:33,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:34,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:34,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436977186] [2021-11-07 07:23:34,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436977186] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:34,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9434166] [2021-11-07 07:23:34,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:23:34,094 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:34,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:34,097 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:34,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-07 07:23:35,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-11-07 07:23:35,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:35,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-07 07:23:35,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:35,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 0 proven. 1863 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:35,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9434166] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:35,844 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:35,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2021-11-07 07:23:35,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823136111] [2021-11-07 07:23:35,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 07:23:35,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:35,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 07:23:35,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2021-11-07 07:23:35,845 INFO L87 Difference]: Start difference. First operand 147 states and 147 transitions. Second operand has 30 states, 29 states have (on average 4.896551724137931) internal successors, (142), 30 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:35,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:35,908 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions. [2021-11-07 07:23:35,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 07:23:35,909 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 4.896551724137931) internal successors, (142), 30 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2021-11-07 07:23:35,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:35,910 INFO L225 Difference]: With dead ends: 151 [2021-11-07 07:23:35,910 INFO L226 Difference]: Without dead ends: 150 [2021-11-07 07:23:35,910 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 142 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 07:23:35,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-11-07 07:23:35,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 149. [2021-11-07 07:23:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 148 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2021-11-07 07:23:35,914 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 142 [2021-11-07 07:23:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:35,915 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2021-11-07 07:23:35,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 4.896551724137931) internal successors, (142), 30 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:35,915 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2021-11-07 07:23:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-07 07:23:35,916 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:35,916 INFO L513 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 28, 1, 1, 1, 1] [2021-11-07 07:23:35,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:36,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:36,125 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:36,125 INFO L85 PathProgramCache]: Analyzing trace with hash 2001991333, now seen corresponding path program 28 times [2021-11-07 07:23:36,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:36,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496274015] [2021-11-07 07:23:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:36,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:37,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:37,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:37,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496274015] [2021-11-07 07:23:37,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496274015] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:37,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255858612] [2021-11-07 07:23:37,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:23:37,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:37,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:37,434 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:37,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-07 07:23:38,773 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:23:38,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:38,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 07:23:38,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1946 backedges. 0 proven. 1946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:39,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255858612] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:39,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:39,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 61 [2021-11-07 07:23:39,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727475134] [2021-11-07 07:23:39,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-07 07:23:39,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:39,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-07 07:23:39,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=991, Invalid=2791, Unknown=0, NotChecked=0, Total=3782 [2021-11-07 07:23:39,213 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand has 62 states, 61 states have (on average 2.442622950819672) internal successors, (149), 62 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:39,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:39,889 INFO L93 Difference]: Finished difference Result 154 states and 154 transitions. [2021-11-07 07:23:39,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-07 07:23:39,890 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.442622950819672) internal successors, (149), 62 states have internal predecessors, (149), 0 states have call successors, (0), 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 145 [2021-11-07 07:23:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:39,891 INFO L225 Difference]: With dead ends: 154 [2021-11-07 07:23:39,891 INFO L226 Difference]: Without dead ends: 153 [2021-11-07 07:23:39,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1410 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2327, Invalid=5863, Unknown=0, NotChecked=0, Total=8190 [2021-11-07 07:23:39,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2021-11-07 07:23:39,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2021-11-07 07:23:39,897 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 07:23:39,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions. [2021-11-07 07:23:39,898 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 145 [2021-11-07 07:23:39,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:39,898 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions. [2021-11-07 07:23:39,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.442622950819672) internal successors, (149), 62 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:39,899 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions. [2021-11-07 07:23:39,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-07 07:23:39,900 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:39,900 INFO L513 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 1, 1, 1, 1] [2021-11-07 07:23:39,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-11-07 07:23:40,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-07 07:23:40,113 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:40,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:40,113 INFO L85 PathProgramCache]: Analyzing trace with hash -231675993, now seen corresponding path program 28 times [2021-11-07 07:23:40,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:40,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703020743] [2021-11-07 07:23:40,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:40,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:40,617 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:40,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:40,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703020743] [2021-11-07 07:23:40,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703020743] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:40,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584631885] [2021-11-07 07:23:40,618 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:23:40,618 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:40,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:40,619 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:40,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-07 07:23:42,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:23:42,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:42,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-07 07:23:42,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:42,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2002 backedges. 0 proven. 2002 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:42,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584631885] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:42,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:42,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2021-11-07 07:23:42,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136838034] [2021-11-07 07:23:42,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-07 07:23:42,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:42,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-07 07:23:42,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2021-11-07 07:23:42,591 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand has 31 states, 30 states have (on average 4.9) internal successors, (147), 31 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:42,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:42,680 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2021-11-07 07:23:42,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 07:23:42,681 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.9) internal successors, (147), 31 states have internal predecessors, (147), 0 states have call successors, (0), 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 147 [2021-11-07 07:23:42,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:42,682 INFO L225 Difference]: With dead ends: 156 [2021-11-07 07:23:42,682 INFO L226 Difference]: Without dead ends: 155 [2021-11-07 07:23:42,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 147 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 07:23:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-11-07 07:23:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2021-11-07 07:23:42,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 152 states have (on average 1.013157894736842) internal successors, (154), 153 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions. [2021-11-07 07:23:42,688 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 147 [2021-11-07 07:23:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:42,689 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions. [2021-11-07 07:23:42,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.9) internal successors, (147), 31 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:42,689 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions. [2021-11-07 07:23:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-07 07:23:42,690 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:42,690 INFO L513 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 29, 1, 1, 1, 1] [2021-11-07 07:23:42,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:42,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-07 07:23:42,917 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:42,917 INFO L85 PathProgramCache]: Analyzing trace with hash 152990577, now seen corresponding path program 29 times [2021-11-07 07:23:42,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:42,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131969522] [2021-11-07 07:23:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:42,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:44,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:44,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:44,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131969522] [2021-11-07 07:23:44,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131969522] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:44,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802998063] [2021-11-07 07:23:44,136 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:23:44,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:44,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:44,147 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:44,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-07 07:23:45,644 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-07 07:23:45,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:45,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-07 07:23:45,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:46,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2088 backedges. 0 proven. 2088 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:46,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802998063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:46,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:46,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 63 [2021-11-07 07:23:46,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412544934] [2021-11-07 07:23:46,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 07:23:46,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 07:23:46,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 07:23:46,108 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand has 64 states, 63 states have (on average 2.4444444444444446) internal successors, (154), 64 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:46,827 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions. [2021-11-07 07:23:46,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-07 07:23:46,827 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.4444444444444446) internal successors, (154), 64 states have internal predecessors, (154), 0 states have call successors, (0), 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 07:23:46,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:46,828 INFO L225 Difference]: With dead ends: 159 [2021-11-07 07:23:46,829 INFO L226 Difference]: Without dead ends: 158 [2021-11-07 07:23:46,830 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1504 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2482, Invalid=6260, Unknown=0, NotChecked=0, Total=8742 [2021-11-07 07:23:46,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-07 07:23:46,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 157. [2021-11-07 07:23:46,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 156 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 07:23:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 157 transitions. [2021-11-07 07:23:46,833 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 157 transitions. Word has length 150 [2021-11-07 07:23:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:46,834 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 157 transitions. [2021-11-07 07:23:46,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.4444444444444446) internal successors, (154), 64 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:23:46,834 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 157 transitions. [2021-11-07 07:23:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 07:23:46,835 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:46,835 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 1, 1, 1, 1] [2021-11-07 07:23:46,862 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:47,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2021-11-07 07:23:47,035 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash 995058035, now seen corresponding path program 29 times [2021-11-07 07:23:47,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:47,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435476367] [2021-11-07 07:23:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:47,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:47,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:47,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435476367] [2021-11-07 07:23:47,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435476367] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:47,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367714347] [2021-11-07 07:23:47,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:23:47,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:47,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:47,455 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:47,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-07 07:23:48,989 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-11-07 07:23:48,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:48,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-07 07:23:48,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2146 backedges. 0 proven. 2146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:49,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367714347] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:49,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:49,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2021-11-07 07:23:49,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159364998] [2021-11-07 07:23:49,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 07:23:49,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:49,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 07:23:49,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-11-07 07:23:49,391 INFO L87 Difference]: Start difference. First operand 157 states and 157 transitions. Second operand has 32 states, 31 states have (on average 4.903225806451613) internal successors, (152), 32 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 07:23:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:49,503 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions. [2021-11-07 07:23:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 07:23:49,504 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 4.903225806451613) internal successors, (152), 32 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) Word has length 152 [2021-11-07 07:23:49,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:49,505 INFO L225 Difference]: With dead ends: 161 [2021-11-07 07:23:49,505 INFO L226 Difference]: Without dead ends: 160 [2021-11-07 07:23:49,506 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 152 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 07:23:49,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-07 07:23:49,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2021-11-07 07:23:49,510 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 07:23:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 159 transitions. [2021-11-07 07:23:49,511 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 159 transitions. Word has length 152 [2021-11-07 07:23:49,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:49,512 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 159 transitions. [2021-11-07 07:23:49,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 4.903225806451613) internal successors, (152), 32 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 07:23:49,514 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 159 transitions. [2021-11-07 07:23:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-07 07:23:49,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:49,516 INFO L513 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 30, 1, 1, 1, 1] [2021-11-07 07:23:49,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:49,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:49,741 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:49,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:49,741 INFO L85 PathProgramCache]: Analyzing trace with hash -90302939, now seen corresponding path program 30 times [2021-11-07 07:23:49,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:49,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322289341] [2021-11-07 07:23:49,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:49,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:49,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:51,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:51,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322289341] [2021-11-07 07:23:51,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322289341] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:51,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461016843] [2021-11-07 07:23:51,167 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:23:51,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:51,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:51,168 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:51,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-07 07:23:52,763 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-07 07:23:52,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:52,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-07 07:23:52,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2235 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:53,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461016843] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:53,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:53,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 65 [2021-11-07 07:23:53,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953863294] [2021-11-07 07:23:53,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 07:23:53,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:53,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 07:23:53,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1121, Invalid=3169, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 07:23:53,306 INFO L87 Difference]: Start difference. First operand 159 states and 159 transitions. Second operand has 66 states, 65 states have (on average 2.4461538461538463) internal successors, (159), 66 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 07:23:54,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:54,079 INFO L93 Difference]: Finished difference Result 164 states and 164 transitions. [2021-11-07 07:23:54,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 07:23:54,079 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 2.4461538461538463) internal successors, (159), 66 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) Word has length 155 [2021-11-07 07:23:54,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:54,080 INFO L225 Difference]: With dead ends: 164 [2021-11-07 07:23:54,080 INFO L226 Difference]: Without dead ends: 163 [2021-11-07 07:23:54,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1601 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2642, Invalid=6670, Unknown=0, NotChecked=0, Total=9312 [2021-11-07 07:23:54,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-07 07:23:54,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 162. [2021-11-07 07:23:54,085 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 07:23:54,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions. [2021-11-07 07:23:54,086 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 155 [2021-11-07 07:23:54,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:54,087 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions. [2021-11-07 07:23:54,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 2.4461538461538463) internal successors, (159), 66 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 07:23:54,087 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions. [2021-11-07 07:23:54,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-11-07 07:23:54,088 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:54,088 INFO L513 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 1, 1, 1, 1] [2021-11-07 07:23:54,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-07 07:23:54,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:54,313 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:54,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:54,313 INFO L85 PathProgramCache]: Analyzing trace with hash -881776857, now seen corresponding path program 30 times [2021-11-07 07:23:54,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:54,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649074969] [2021-11-07 07:23:54,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:54,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:54,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:54,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:54,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649074969] [2021-11-07 07:23:54,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649074969] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:54,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174130545] [2021-11-07 07:23:54,766 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:23:54,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:54,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:54,784 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:54,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-07 07:23:56,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-07 07:23:56,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:23:56,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-07 07:23:56,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:23:56,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2295 backedges. 0 proven. 2295 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:56,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174130545] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:56,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:23:56,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2021-11-07 07:23:56,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816568010] [2021-11-07 07:23:56,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-07 07:23:56,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:23:56,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-07 07:23:56,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2021-11-07 07:23:56,911 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand has 33 states, 32 states have (on average 4.90625) internal successors, (157), 33 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 07:23:56,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:23:56,982 INFO L93 Difference]: Finished difference Result 166 states and 166 transitions. [2021-11-07 07:23:56,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 07:23:56,983 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 4.90625) internal successors, (157), 33 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 07:23:56,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:23:56,984 INFO L225 Difference]: With dead ends: 166 [2021-11-07 07:23:56,984 INFO L226 Difference]: Without dead ends: 165 [2021-11-07 07:23:56,985 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 157 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 07:23:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-07 07:23:56,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 164. [2021-11-07 07:23:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 162 states have (on average 1.0123456790123457) internal successors, (164), 163 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 07:23:56,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions. [2021-11-07 07:23:56,990 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 157 [2021-11-07 07:23:56,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:23:56,991 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions. [2021-11-07 07:23:56,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 4.90625) internal successors, (157), 33 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 07:23:56,991 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions. [2021-11-07 07:23:56,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-07 07:23:56,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:23:56,993 INFO L513 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 1, 1, 1, 1] [2021-11-07 07:23:57,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-11-07 07:23:57,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-11-07 07:23:57,197 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:23:57,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:23:57,198 INFO L85 PathProgramCache]: Analyzing trace with hash -994311183, now seen corresponding path program 31 times [2021-11-07 07:23:57,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:23:57,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668278211] [2021-11-07 07:23:57,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:23:57,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:23:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:23:58,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:23:58,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:23:58,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668278211] [2021-11-07 07:23:58,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668278211] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:23:58,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412031766] [2021-11-07 07:23:58,549 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:23:58,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:23:58,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:23:58,551 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:23:58,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-07 07:24:00,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:00,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-07 07:24:00,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:00,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2387 backedges. 0 proven. 2387 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:00,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412031766] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:00,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:00,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 67 [2021-11-07 07:24:00,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580960808] [2021-11-07 07:24:00,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-07 07:24:00,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:00,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-07 07:24:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1189, Invalid=3367, Unknown=0, NotChecked=0, Total=4556 [2021-11-07 07:24:00,655 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand has 68 states, 67 states have (on average 2.4477611940298507) internal successors, (164), 68 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 07:24:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:01,511 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions. [2021-11-07 07:24:01,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 07:24:01,518 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.4477611940298507) internal successors, (164), 68 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 160 [2021-11-07 07:24:01,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:01,519 INFO L225 Difference]: With dead ends: 169 [2021-11-07 07:24:01,519 INFO L226 Difference]: Without dead ends: 168 [2021-11-07 07:24:01,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2807, Invalid=7093, Unknown=0, NotChecked=0, Total=9900 [2021-11-07 07:24:01,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-07 07:24:01,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2021-11-07 07:24:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 165 states have (on average 1.0121212121212122) internal successors, (167), 166 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 07:24:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2021-11-07 07:24:01,526 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 160 [2021-11-07 07:24:01,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:01,526 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2021-11-07 07:24:01,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.4477611940298507) internal successors, (164), 68 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 07:24:01,526 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2021-11-07 07:24:01,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-07 07:24:01,527 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:01,528 INFO L513 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 1, 1, 1, 1] [2021-11-07 07:24:01,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-11-07 07:24:01,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:01,753 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:01,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:01,753 INFO L85 PathProgramCache]: Analyzing trace with hash -2050305549, now seen corresponding path program 31 times [2021-11-07 07:24:01,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:01,754 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650883942] [2021-11-07 07:24:01,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:01,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:02,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 0 proven. 2449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:02,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:02,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650883942] [2021-11-07 07:24:02,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650883942] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:02,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947098313] [2021-11-07 07:24:02,288 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:24:02,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:02,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:02,289 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:02,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-07 07:24:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:03,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 07:24:03,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2449 backedges. 0 proven. 2449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:04,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947098313] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:04,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:04,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2021-11-07 07:24:04,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079101699] [2021-11-07 07:24:04,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 07:24:04,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:04,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 07:24:04,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:24:04,422 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand has 34 states, 33 states have (on average 4.909090909090909) internal successors, (162), 34 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 07:24:04,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:04,500 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2021-11-07 07:24:04,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-07 07:24:04,500 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 4.909090909090909) internal successors, (162), 34 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) Word has length 162 [2021-11-07 07:24:04,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:04,501 INFO L225 Difference]: With dead ends: 171 [2021-11-07 07:24:04,502 INFO L226 Difference]: Without dead ends: 170 [2021-11-07 07:24:04,502 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:24:04,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-07 07:24:04,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 169. [2021-11-07 07:24:04,506 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 07:24:04,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 169 transitions. [2021-11-07 07:24:04,507 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 169 transitions. Word has length 162 [2021-11-07 07:24:04,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:04,507 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 169 transitions. [2021-11-07 07:24:04,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 4.909090909090909) internal successors, (162), 34 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 07:24:04,508 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 169 transitions. [2021-11-07 07:24:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-07 07:24:04,509 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:04,509 INFO L513 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 32, 1, 1, 1, 1] [2021-11-07 07:24:04,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:04,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:04,725 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1922640475, now seen corresponding path program 32 times [2021-11-07 07:24:04,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:04,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447623438] [2021-11-07 07:24:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:04,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:06,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:06,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:06,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447623438] [2021-11-07 07:24:06,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447623438] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:06,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443090222] [2021-11-07 07:24:06,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:24:06,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:06,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:06,149 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:06,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-07 07:24:07,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:24:07,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:08,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-07 07:24:08,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:08,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2544 backedges. 0 proven. 2544 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:08,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443090222] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:08,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:08,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 69 [2021-11-07 07:24:08,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230549007] [2021-11-07 07:24:08,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-11-07 07:24:08,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:08,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-11-07 07:24:08,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1259, Invalid=3571, Unknown=0, NotChecked=0, Total=4830 [2021-11-07 07:24:08,569 INFO L87 Difference]: Start difference. First operand 169 states and 169 transitions. Second operand has 70 states, 69 states have (on average 2.449275362318841) internal successors, (169), 70 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 07:24:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:09,501 INFO L93 Difference]: Finished difference Result 174 states and 174 transitions. [2021-11-07 07:24:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-07 07:24:09,501 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 2.449275362318841) internal successors, (169), 70 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) Word has length 165 [2021-11-07 07:24:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:09,502 INFO L225 Difference]: With dead ends: 174 [2021-11-07 07:24:09,502 INFO L226 Difference]: Without dead ends: 173 [2021-11-07 07:24:09,503 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1804 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2977, Invalid=7529, Unknown=0, NotChecked=0, Total=10506 [2021-11-07 07:24:09,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-07 07:24:09,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 172. [2021-11-07 07:24:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 170 states have (on average 1.011764705882353) internal successors, (172), 171 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:09,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 172 transitions. [2021-11-07 07:24:09,508 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 172 transitions. Word has length 165 [2021-11-07 07:24:09,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:09,509 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 172 transitions. [2021-11-07 07:24:09,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 2.449275362318841) internal successors, (169), 70 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 07:24:09,509 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 172 transitions. [2021-11-07 07:24:09,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-07 07:24:09,511 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:09,511 INFO L513 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 1, 1, 1, 1] [2021-11-07 07:24:09,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-11-07 07:24:09,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-11-07 07:24:09,721 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:09,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:09,721 INFO L85 PathProgramCache]: Analyzing trace with hash -821557593, now seen corresponding path program 32 times [2021-11-07 07:24:09,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:09,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893447478] [2021-11-07 07:24:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:09,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:10,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:10,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893447478] [2021-11-07 07:24:10,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893447478] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:10,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987551455] [2021-11-07 07:24:10,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:24:10,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:10,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:10,239 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:10,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-07 07:24:12,122 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:24:12,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:12,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 07:24:12,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:12,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2608 backedges. 0 proven. 2608 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:12,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987551455] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:12,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:12,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2021-11-07 07:24:12,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266031877] [2021-11-07 07:24:12,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 07:24:12,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:12,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 07:24:12,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2021-11-07 07:24:12,687 INFO L87 Difference]: Start difference. First operand 172 states and 172 transitions. Second operand has 35 states, 34 states have (on average 4.911764705882353) internal successors, (167), 35 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 07:24:12,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:12,761 INFO L93 Difference]: Finished difference Result 176 states and 176 transitions. [2021-11-07 07:24:12,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-07 07:24:12,762 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 4.911764705882353) internal successors, (167), 35 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 07:24:12,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:12,763 INFO L225 Difference]: With dead ends: 176 [2021-11-07 07:24:12,763 INFO L226 Difference]: Without dead ends: 175 [2021-11-07 07:24:12,763 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 167 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 07:24:12,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-07 07:24:12,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2021-11-07 07:24:12,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 172 states have (on average 1.0116279069767442) internal successors, (174), 173 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 07:24:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 174 transitions. [2021-11-07 07:24:12,767 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 174 transitions. Word has length 167 [2021-11-07 07:24:12,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:12,767 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 174 transitions. [2021-11-07 07:24:12,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 4.911764705882353) internal successors, (167), 35 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 07:24:12,767 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 174 transitions. [2021-11-07 07:24:12,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-07 07:24:12,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:12,769 INFO L513 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 33, 1, 1, 1, 1] [2021-11-07 07:24:12,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:12,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-11-07 07:24:12,989 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:12,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:12,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1996420209, now seen corresponding path program 33 times [2021-11-07 07:24:12,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:12,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006292265] [2021-11-07 07:24:12,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:12,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:14,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:14,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006292265] [2021-11-07 07:24:14,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006292265] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:14,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706449485] [2021-11-07 07:24:14,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:24:14,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:14,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:14,345 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:14,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-07 07:24:16,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-07 07:24:16,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:16,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-07 07:24:16,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:16,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2706 backedges. 0 proven. 2706 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:16,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706449485] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:16,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:16,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 71 [2021-11-07 07:24:16,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116475837] [2021-11-07 07:24:16,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2021-11-07 07:24:16,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:16,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-11-07 07:24:16,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1331, Invalid=3781, Unknown=0, NotChecked=0, Total=5112 [2021-11-07 07:24:16,655 INFO L87 Difference]: Start difference. First operand 174 states and 174 transitions. Second operand has 72 states, 71 states have (on average 2.4507042253521125) internal successors, (174), 72 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 07:24:17,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:17,518 INFO L93 Difference]: Finished difference Result 179 states and 179 transitions. [2021-11-07 07:24:17,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-07 07:24:17,518 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 71 states have (on average 2.4507042253521125) internal successors, (174), 72 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 170 [2021-11-07 07:24:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:17,519 INFO L225 Difference]: With dead ends: 179 [2021-11-07 07:24:17,519 INFO L226 Difference]: Without dead ends: 178 [2021-11-07 07:24:17,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1910 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3152, Invalid=7978, Unknown=0, NotChecked=0, Total=11130 [2021-11-07 07:24:17,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-07 07:24:17,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 177. [2021-11-07 07:24:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 1.0114285714285713) internal successors, (177), 176 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:17,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 177 transitions. [2021-11-07 07:24:17,523 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 177 transitions. Word has length 170 [2021-11-07 07:24:17,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:17,523 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 177 transitions. [2021-11-07 07:24:17,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 71 states have (on average 2.4507042253521125) internal successors, (174), 72 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 07:24:17,523 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 177 transitions. [2021-11-07 07:24:17,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-07 07:24:17,524 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:17,524 INFO L513 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 1, 1, 1, 1] [2021-11-07 07:24:17,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-11-07 07:24:17,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-07 07:24:17,729 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:17,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:17,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1290558861, now seen corresponding path program 33 times [2021-11-07 07:24:17,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:17,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331788751] [2021-11-07 07:24:17,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:17,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:18,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 0 proven. 2772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:18,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:18,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331788751] [2021-11-07 07:24:18,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331788751] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:18,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667361930] [2021-11-07 07:24:18,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:24:18,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:18,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:18,257 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:18,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-11-07 07:24:20,109 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-11-07 07:24:20,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:20,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-07 07:24:20,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:20,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2772 backedges. 0 proven. 2772 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:20,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667361930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:20,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:20,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2021-11-07 07:24:20,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36937385] [2021-11-07 07:24:20,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-07 07:24:20,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:20,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-07 07:24:20,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2021-11-07 07:24:20,519 INFO L87 Difference]: Start difference. First operand 177 states and 177 transitions. Second operand has 36 states, 35 states have (on average 4.914285714285715) internal successors, (172), 36 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:20,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:20,591 INFO L93 Difference]: Finished difference Result 181 states and 181 transitions. [2021-11-07 07:24:20,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-07 07:24:20,592 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.914285714285715) internal successors, (172), 36 states have internal predecessors, (172), 0 states have call successors, (0), 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 172 [2021-11-07 07:24:20,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:20,593 INFO L225 Difference]: With dead ends: 181 [2021-11-07 07:24:20,593 INFO L226 Difference]: Without dead ends: 180 [2021-11-07 07:24:20,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 172 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 07:24:20,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2021-11-07 07:24:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2021-11-07 07:24:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 177 states have (on average 1.0112994350282485) internal successors, (179), 178 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:20,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 179 transitions. [2021-11-07 07:24:20,598 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 179 transitions. Word has length 172 [2021-11-07 07:24:20,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:20,599 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 179 transitions. [2021-11-07 07:24:20,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.914285714285715) internal successors, (172), 36 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:20,599 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 179 transitions. [2021-11-07 07:24:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-07 07:24:20,600 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:20,600 INFO L513 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 34, 1, 1, 1, 1] [2021-11-07 07:24:20,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2021-11-07 07:24:20,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-11-07 07:24:20,815 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:20,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1508259109, now seen corresponding path program 34 times [2021-11-07 07:24:20,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:20,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253451263] [2021-11-07 07:24:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:20,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:22,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:22,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253451263] [2021-11-07 07:24:22,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253451263] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:22,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731759307] [2021-11-07 07:24:22,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:24:22,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:22,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:22,326 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:22,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-11-07 07:24:24,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:24:24,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:24,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-07 07:24:24,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:24,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2873 backedges. 0 proven. 2873 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:24,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731759307] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:24,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:24,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 73 [2021-11-07 07:24:24,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611308320] [2021-11-07 07:24:24,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2021-11-07 07:24:24,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:24,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-11-07 07:24:24,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1405, Invalid=3997, Unknown=0, NotChecked=0, Total=5402 [2021-11-07 07:24:24,691 INFO L87 Difference]: Start difference. First operand 179 states and 179 transitions. Second operand has 74 states, 73 states have (on average 2.452054794520548) internal successors, (179), 74 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:25,614 INFO L93 Difference]: Finished difference Result 184 states and 184 transitions. [2021-11-07 07:24:25,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-07 07:24:25,614 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 2.452054794520548) internal successors, (179), 74 states have internal predecessors, (179), 0 states have call successors, (0), 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 175 [2021-11-07 07:24:25,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:25,615 INFO L225 Difference]: With dead ends: 184 [2021-11-07 07:24:25,615 INFO L226 Difference]: Without dead ends: 183 [2021-11-07 07:24:25,616 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2019 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3332, Invalid=8440, Unknown=0, NotChecked=0, Total=11772 [2021-11-07 07:24:25,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-11-07 07:24:25,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 182. [2021-11-07 07:24:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.011111111111111) internal successors, (182), 181 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:25,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2021-11-07 07:24:25,625 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 175 [2021-11-07 07:24:25,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:25,625 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2021-11-07 07:24:25,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 2.452054794520548) internal successors, (179), 74 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:25,626 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2021-11-07 07:24:25,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-07 07:24:25,627 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:25,627 INFO L513 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 1, 1, 1, 1] [2021-11-07 07:24:25,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:25,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:25,837 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:25,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:25,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2033026599, now seen corresponding path program 34 times [2021-11-07 07:24:25,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:25,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533024680] [2021-11-07 07:24:25,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:25,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:26,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 0 proven. 2941 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:26,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:26,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533024680] [2021-11-07 07:24:26,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533024680] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:26,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190492908] [2021-11-07 07:24:26,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:24:26,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:26,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:26,517 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:26,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-11-07 07:24:28,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:24:28,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:28,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-07 07:24:28,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 2941 backedges. 0 proven. 2941 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:28,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190492908] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:28,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:28,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2021-11-07 07:24:28,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109450060] [2021-11-07 07:24:28,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-07 07:24:28,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:28,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-07 07:24:28,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2021-11-07 07:24:28,868 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand has 37 states, 36 states have (on average 4.916666666666667) internal successors, (177), 37 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:28,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:28,936 INFO L93 Difference]: Finished difference Result 186 states and 186 transitions. [2021-11-07 07:24:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-07 07:24:28,936 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.916666666666667) internal successors, (177), 37 states have internal predecessors, (177), 0 states have call successors, (0), 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 177 [2021-11-07 07:24:28,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:28,937 INFO L225 Difference]: With dead ends: 186 [2021-11-07 07:24:28,937 INFO L226 Difference]: Without dead ends: 185 [2021-11-07 07:24:28,937 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 177 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 07:24:28,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-07 07:24:28,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 184. [2021-11-07 07:24:28,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 182 states have (on average 1.010989010989011) internal successors, (184), 183 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 184 transitions. [2021-11-07 07:24:28,940 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 184 transitions. Word has length 177 [2021-11-07 07:24:28,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:28,941 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 184 transitions. [2021-11-07 07:24:28,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.916666666666667) internal successors, (177), 37 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:28,941 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 184 transitions. [2021-11-07 07:24:28,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-07 07:24:28,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:28,942 INFO L513 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 35, 1, 1, 1, 1] [2021-11-07 07:24:28,979 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-11-07 07:24:29,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:29,157 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:29,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:29,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1733344015, now seen corresponding path program 35 times [2021-11-07 07:24:29,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:29,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869180437] [2021-11-07 07:24:29,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:29,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:30,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:30,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:30,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869180437] [2021-11-07 07:24:30,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869180437] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:30,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191374072] [2021-11-07 07:24:30,596 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:24:30,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:30,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:30,597 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:30,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-11-07 07:24:32,637 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-07 07:24:32,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:32,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-07 07:24:32,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3045 backedges. 0 proven. 3045 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:33,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191374072] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:33,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:33,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 75 [2021-11-07 07:24:33,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276256382] [2021-11-07 07:24:33,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2021-11-07 07:24:33,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:33,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-11-07 07:24:33,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1481, Invalid=4219, Unknown=0, NotChecked=0, Total=5700 [2021-11-07 07:24:33,174 INFO L87 Difference]: Start difference. First operand 184 states and 184 transitions. Second operand has 76 states, 75 states have (on average 2.453333333333333) internal successors, (184), 76 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:34,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:34,087 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2021-11-07 07:24:34,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-11-07 07:24:34,088 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 2.453333333333333) internal successors, (184), 76 states have internal predecessors, (184), 0 states have call successors, (0), 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 180 [2021-11-07 07:24:34,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:34,089 INFO L225 Difference]: With dead ends: 189 [2021-11-07 07:24:34,089 INFO L226 Difference]: Without dead ends: 188 [2021-11-07 07:24:34,090 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2131 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3517, Invalid=8915, Unknown=0, NotChecked=0, Total=12432 [2021-11-07 07:24:34,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-07 07:24:34,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 187. [2021-11-07 07:24:34,093 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 07:24:34,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 187 transitions. [2021-11-07 07:24:34,093 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 187 transitions. Word has length 180 [2021-11-07 07:24:34,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:34,093 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 187 transitions. [2021-11-07 07:24:34,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 2.453333333333333) internal successors, (184), 76 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:34,094 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 187 transitions. [2021-11-07 07:24:34,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-11-07 07:24:34,094 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:34,095 INFO L513 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 1, 1, 1, 1] [2021-11-07 07:24:34,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-11-07 07:24:34,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2021-11-07 07:24:34,297 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:34,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:34,297 INFO L85 PathProgramCache]: Analyzing trace with hash 703714035, now seen corresponding path program 35 times [2021-11-07 07:24:34,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:34,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963810492] [2021-11-07 07:24:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:34,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:34,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3115 backedges. 0 proven. 3115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:34,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:34,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963810492] [2021-11-07 07:24:34,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963810492] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:34,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797077615] [2021-11-07 07:24:34,852 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:24:34,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:34,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:34,854 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:34,856 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-11-07 07:24:36,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-11-07 07:24:36,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:36,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-07 07:24:36,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3115 backedges. 0 proven. 3115 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:37,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797077615] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:37,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:37,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2021-11-07 07:24:37,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581461574] [2021-11-07 07:24:37,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-07 07:24:37,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:37,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-07 07:24:37,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:24:37,409 INFO L87 Difference]: Start difference. First operand 187 states and 187 transitions. Second operand has 38 states, 37 states have (on average 4.918918918918919) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:37,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:37,482 INFO L93 Difference]: Finished difference Result 191 states and 191 transitions. [2021-11-07 07:24:37,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-07 07:24:37,483 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 4.918918918918919) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2021-11-07 07:24:37,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:37,485 INFO L225 Difference]: With dead ends: 191 [2021-11-07 07:24:37,485 INFO L226 Difference]: Without dead ends: 190 [2021-11-07 07:24:37,486 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 182 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 07:24:37,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-07 07:24:37,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 189. [2021-11-07 07:24:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 187 states have (on average 1.0106951871657754) internal successors, (189), 188 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:37,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 189 transitions. [2021-11-07 07:24:37,490 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 189 transitions. Word has length 182 [2021-11-07 07:24:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:37,491 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 189 transitions. [2021-11-07 07:24:37,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 4.918918918918919) internal successors, (182), 38 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 189 transitions. [2021-11-07 07:24:37,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-11-07 07:24:37,492 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:37,492 INFO L513 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 36, 1, 1, 1, 1] [2021-11-07 07:24:37,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-11-07 07:24:37,697 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:37,697 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:37,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:37,697 INFO L85 PathProgramCache]: Analyzing trace with hash 609498277, now seen corresponding path program 36 times [2021-11-07 07:24:37,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:37,697 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059838920] [2021-11-07 07:24:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:37,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:39,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:39,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059838920] [2021-11-07 07:24:39,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059838920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:39,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032469547] [2021-11-07 07:24:39,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:24:39,269 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:39,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:39,270 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:39,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-11-07 07:24:41,444 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-07 07:24:41,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:41,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 75 conjunts are in the unsatisfiable core [2021-11-07 07:24:41,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:41,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3222 backedges. 0 proven. 3222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:41,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032469547] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:41,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:41,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 77 [2021-11-07 07:24:41,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328074809] [2021-11-07 07:24:41,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-11-07 07:24:41,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:41,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-11-07 07:24:41,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1559, Invalid=4447, Unknown=0, NotChecked=0, Total=6006 [2021-11-07 07:24:41,931 INFO L87 Difference]: Start difference. First operand 189 states and 189 transitions. Second operand has 78 states, 77 states have (on average 2.4545454545454546) internal successors, (189), 78 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:42,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:42,890 INFO L93 Difference]: Finished difference Result 194 states and 194 transitions. [2021-11-07 07:24:42,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-11-07 07:24:42,890 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 2.4545454545454546) internal successors, (189), 78 states have internal predecessors, (189), 0 states have call successors, (0), 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 07:24:42,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:42,891 INFO L225 Difference]: With dead ends: 194 [2021-11-07 07:24:42,891 INFO L226 Difference]: Without dead ends: 193 [2021-11-07 07:24:42,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2246 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3707, Invalid=9403, Unknown=0, NotChecked=0, Total=13110 [2021-11-07 07:24:42,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-11-07 07:24:42,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 192. [2021-11-07 07:24:42,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 190 states have (on average 1.0105263157894737) internal successors, (192), 191 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 07:24:42,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 192 transitions. [2021-11-07 07:24:42,896 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 192 transitions. Word has length 185 [2021-11-07 07:24:42,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:42,897 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 192 transitions. [2021-11-07 07:24:42,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 2.4545454545454546) internal successors, (189), 78 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:24:42,897 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 192 transitions. [2021-11-07 07:24:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-11-07 07:24:42,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:42,898 INFO L513 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 1, 1, 1, 1] [2021-11-07 07:24:42,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:43,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:43,105 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:43,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:43,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1612293543, now seen corresponding path program 36 times [2021-11-07 07:24:43,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:43,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774621684] [2021-11-07 07:24:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:43,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 0 proven. 3294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:43,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:43,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774621684] [2021-11-07 07:24:43,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774621684] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:43,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001416701] [2021-11-07 07:24:43,662 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:24:43,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:43,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:43,662 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:43,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-11-07 07:24:45,895 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-11-07 07:24:45,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:24:45,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-07 07:24:45,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3294 backedges. 0 proven. 3294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:46,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001416701] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:46,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:46,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2021-11-07 07:24:46,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403812399] [2021-11-07 07:24:46,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-07 07:24:46,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:46,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-07 07:24:46,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2021-11-07 07:24:46,336 INFO L87 Difference]: Start difference. First operand 192 states and 192 transitions. Second operand has 39 states, 38 states have (on average 4.921052631578948) internal successors, (187), 39 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 07:24:46,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:46,414 INFO L93 Difference]: Finished difference Result 196 states and 196 transitions. [2021-11-07 07:24:46,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-07 07:24:46,415 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 4.921052631578948) internal successors, (187), 39 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) Word has length 187 [2021-11-07 07:24:46,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:46,416 INFO L225 Difference]: With dead ends: 196 [2021-11-07 07:24:46,416 INFO L226 Difference]: Without dead ends: 195 [2021-11-07 07:24:46,416 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 187 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 07:24:46,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-07 07:24:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2021-11-07 07:24:46,432 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 07:24:46,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-11-07 07:24:46,433 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 187 [2021-11-07 07:24:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:46,433 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-11-07 07:24:46,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 4.921052631578948) internal successors, (187), 39 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 07:24:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-11-07 07:24:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-07 07:24:46,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:46,435 INFO L513 BasicCegarLoop]: trace histogram [38, 37, 37, 37, 37, 1, 1, 1, 1] [2021-11-07 07:24:46,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-11-07 07:24:46,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-11-07 07:24:46,661 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:46,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:46,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1217721713, now seen corresponding path program 37 times [2021-11-07 07:24:46,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:46,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869000453] [2021-11-07 07:24:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:46,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:48,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:48,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:48,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869000453] [2021-11-07 07:24:48,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869000453] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:48,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648617455] [2021-11-07 07:24:48,320 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:24:48,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:48,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:48,321 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:48,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-11-07 07:24:50,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:50,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-07 07:24:50,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:51,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3404 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:51,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648617455] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:51,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:51,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 79 [2021-11-07 07:24:51,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843736862] [2021-11-07 07:24:51,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-11-07 07:24:51,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:51,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-11-07 07:24:51,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1639, Invalid=4681, Unknown=0, NotChecked=0, Total=6320 [2021-11-07 07:24:51,123 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 80 states, 79 states have (on average 2.4556962025316458) internal successors, (194), 80 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 07:24:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:52,168 INFO L93 Difference]: Finished difference Result 199 states and 199 transitions. [2021-11-07 07:24:52,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-07 07:24:52,169 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 2.4556962025316458) internal successors, (194), 80 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) Word has length 190 [2021-11-07 07:24:52,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:52,170 INFO L225 Difference]: With dead ends: 199 [2021-11-07 07:24:52,170 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 07:24:52,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2364 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3902, Invalid=9904, Unknown=0, NotChecked=0, Total=13806 [2021-11-07 07:24:52,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 07:24:52,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 197. [2021-11-07 07:24:52,177 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 07:24:52,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 197 transitions. [2021-11-07 07:24:52,177 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 197 transitions. Word has length 190 [2021-11-07 07:24:52,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:52,178 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 197 transitions. [2021-11-07 07:24:52,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 2.4556962025316458) internal successors, (194), 80 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 07:24:52,178 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 197 transitions. [2021-11-07 07:24:52,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-11-07 07:24:52,179 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:52,179 INFO L513 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 1, 1, 1, 1] [2021-11-07 07:24:52,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:52,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-11-07 07:24:52,401 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:52,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:52,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1999463283, now seen corresponding path program 37 times [2021-11-07 07:24:52,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:52,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696968917] [2021-11-07 07:24:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:52,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3478 backedges. 0 proven. 3478 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:53,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:53,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696968917] [2021-11-07 07:24:53,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696968917] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:53,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762633198] [2021-11-07 07:24:53,099 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:24:53,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:53,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:53,100 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:53,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-11-07 07:24:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:55,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-07 07:24:55,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:24:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3478 backedges. 0 proven. 3478 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:56,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762633198] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:56,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:24:56,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2021-11-07 07:24:56,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783977579] [2021-11-07 07:24:56,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-07 07:24:56,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:24:56,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-07 07:24:56,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2021-11-07 07:24:56,096 INFO L87 Difference]: Start difference. First operand 197 states and 197 transitions. Second operand has 40 states, 39 states have (on average 4.923076923076923) internal successors, (192), 40 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 07:24:56,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:24:56,197 INFO L93 Difference]: Finished difference Result 201 states and 201 transitions. [2021-11-07 07:24:56,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-07 07:24:56,198 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 4.923076923076923) internal successors, (192), 40 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 07:24:56,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:24:56,199 INFO L225 Difference]: With dead ends: 201 [2021-11-07 07:24:56,199 INFO L226 Difference]: Without dead ends: 200 [2021-11-07 07:24:56,199 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 192 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 07:24:56,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-07 07:24:56,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 199. [2021-11-07 07:24:56,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 197 states have (on average 1.0101522842639594) internal successors, (199), 198 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 07:24:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 199 transitions. [2021-11-07 07:24:56,203 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 199 transitions. Word has length 192 [2021-11-07 07:24:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:24:56,203 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 199 transitions. [2021-11-07 07:24:56,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 4.923076923076923) internal successors, (192), 40 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 07:24:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 199 transitions. [2021-11-07 07:24:56,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-11-07 07:24:56,205 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:24:56,206 INFO L513 BasicCegarLoop]: trace histogram [39, 38, 38, 38, 38, 1, 1, 1, 1] [2021-11-07 07:24:56,262 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Forceful destruction successful, exit code 0 [2021-11-07 07:24:56,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-11-07 07:24:56,425 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:24:56,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:24:56,425 INFO L85 PathProgramCache]: Analyzing trace with hash -890711003, now seen corresponding path program 38 times [2021-11-07 07:24:56,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:24:56,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496704254] [2021-11-07 07:24:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:24:56,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:24:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:24:58,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:24:58,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:24:58,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496704254] [2021-11-07 07:24:58,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496704254] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:24:58,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1106410156] [2021-11-07 07:24:58,717 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:24:58,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:24:58,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:24:58,718 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:24:58,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2021-11-07 07:25:01,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:25:01,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:01,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-07 07:25:01,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:01,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3591 backedges. 0 proven. 3591 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:01,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1106410156] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:01,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:01,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 81 [2021-11-07 07:25:01,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232237558] [2021-11-07 07:25:01,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2021-11-07 07:25:01,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:01,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-11-07 07:25:01,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1721, Invalid=4921, Unknown=0, NotChecked=0, Total=6642 [2021-11-07 07:25:01,718 INFO L87 Difference]: Start difference. First operand 199 states and 199 transitions. Second operand has 82 states, 81 states have (on average 2.45679012345679) internal successors, (199), 82 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 07:25:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:02,800 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2021-11-07 07:25:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-11-07 07:25:02,800 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 81 states have (on average 2.45679012345679) internal successors, (199), 82 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 195 [2021-11-07 07:25:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:02,801 INFO L225 Difference]: With dead ends: 204 [2021-11-07 07:25:02,801 INFO L226 Difference]: Without dead ends: 203 [2021-11-07 07:25:02,803 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2485 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4102, Invalid=10418, Unknown=0, NotChecked=0, Total=14520 [2021-11-07 07:25:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-07 07:25:02,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2021-11-07 07:25:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 200 states have (on average 1.01) internal successors, (202), 201 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 07:25:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 202 transitions. [2021-11-07 07:25:02,809 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 202 transitions. Word has length 195 [2021-11-07 07:25:02,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:02,809 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 202 transitions. [2021-11-07 07:25:02,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 81 states have (on average 2.45679012345679) internal successors, (199), 82 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 07:25:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 202 transitions. [2021-11-07 07:25:02,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-07 07:25:02,811 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:02,846 INFO L513 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 1, 1, 1, 1] [2021-11-07 07:25:02,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:03,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:03,046 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:25:03,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:03,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1274780377, now seen corresponding path program 38 times [2021-11-07 07:25:03,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:03,047 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144767228] [2021-11-07 07:25:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:03,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:03,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3667 backedges. 0 proven. 3667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:03,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:03,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144767228] [2021-11-07 07:25:03,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144767228] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:03,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108229367] [2021-11-07 07:25:03,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:25:03,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:03,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:03,663 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:03,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2021-11-07 07:25:06,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:25:06,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:06,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-07 07:25:06,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 3667 backedges. 0 proven. 3667 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:06,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108229367] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:06,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:06,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2021-11-07 07:25:06,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413181315] [2021-11-07 07:25:06,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-07 07:25:06,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:06,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-07 07:25:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2021-11-07 07:25:06,588 INFO L87 Difference]: Start difference. First operand 202 states and 202 transitions. Second operand has 41 states, 40 states have (on average 4.925) internal successors, (197), 41 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 07:25:06,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:06,674 INFO L93 Difference]: Finished difference Result 206 states and 206 transitions. [2021-11-07 07:25:06,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-07 07:25:06,675 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.925) internal successors, (197), 41 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) Word has length 197 [2021-11-07 07:25:06,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:06,676 INFO L225 Difference]: With dead ends: 206 [2021-11-07 07:25:06,676 INFO L226 Difference]: Without dead ends: 205 [2021-11-07 07:25:06,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 197 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 07:25:06,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-07 07:25:06,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2021-11-07 07:25:06,679 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 07:25:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 204 transitions. [2021-11-07 07:25:06,679 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 204 transitions. Word has length 197 [2021-11-07 07:25:06,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:06,680 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 204 transitions. [2021-11-07 07:25:06,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.925) internal successors, (197), 41 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 07:25:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 204 transitions. [2021-11-07 07:25:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-11-07 07:25:06,681 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:06,681 INFO L513 BasicCegarLoop]: trace histogram [40, 39, 39, 39, 39, 1, 1, 1, 1] [2021-11-07 07:25:06,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2021-11-07 07:25:06,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:06,881 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:25:06,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash -881326607, now seen corresponding path program 39 times [2021-11-07 07:25:06,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:06,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333681395] [2021-11-07 07:25:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:06,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:08,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:08,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333681395] [2021-11-07 07:25:08,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333681395] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:08,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896315148] [2021-11-07 07:25:08,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:25:08,686 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:08,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:08,687 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:08,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2021-11-07 07:25:11,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-07 07:25:11,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:11,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-07 07:25:11,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3783 backedges. 0 proven. 3783 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:11,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896315148] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:11,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:11,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 83 [2021-11-07 07:25:11,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096853468] [2021-11-07 07:25:11,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-11-07 07:25:11,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:11,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-11-07 07:25:11,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1805, Invalid=5167, Unknown=0, NotChecked=0, Total=6972 [2021-11-07 07:25:11,779 INFO L87 Difference]: Start difference. First operand 204 states and 204 transitions. Second operand has 84 states, 83 states have (on average 2.4578313253012047) internal successors, (204), 84 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 07:25:12,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:12,874 INFO L93 Difference]: Finished difference Result 209 states and 209 transitions. [2021-11-07 07:25:12,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-07 07:25:12,875 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 2.4578313253012047) internal successors, (204), 84 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) Word has length 200 [2021-11-07 07:25:12,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:12,876 INFO L225 Difference]: With dead ends: 209 [2021-11-07 07:25:12,876 INFO L226 Difference]: Without dead ends: 208 [2021-11-07 07:25:12,877 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2609 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4307, Invalid=10945, Unknown=0, NotChecked=0, Total=15252 [2021-11-07 07:25:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-11-07 07:25:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 207. [2021-11-07 07:25:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 205 states have (on average 1.0097560975609756) internal successors, (207), 206 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:12,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 207 transitions. [2021-11-07 07:25:12,883 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 207 transitions. Word has length 200 [2021-11-07 07:25:12,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:12,883 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 207 transitions. [2021-11-07 07:25:12,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 2.4578313253012047) internal successors, (204), 84 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 07:25:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 207 transitions. [2021-11-07 07:25:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-11-07 07:25:12,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:12,885 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 1, 1, 1, 1] [2021-11-07 07:25:12,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2021-11-07 07:25:13,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:13,097 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:25:13,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:13,098 INFO L85 PathProgramCache]: Analyzing trace with hash -846310413, now seen corresponding path program 39 times [2021-11-07 07:25:13,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:13,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108801187] [2021-11-07 07:25:13,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:13,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:13,780 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 07:25:13,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:13,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108801187] [2021-11-07 07:25:13,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108801187] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:13,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731071073] [2021-11-07 07:25:13,781 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:25:13,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:13,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:13,801 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:13,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2021-11-07 07:25:16,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-11-07 07:25:16,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:16,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-07 07:25:16,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:17,117 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 07:25:17,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731071073] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:17,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:17,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2021-11-07 07:25:17,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640604771] [2021-11-07 07:25:17,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-07 07:25:17,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:17,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-07 07:25:17,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 07:25:17,119 INFO L87 Difference]: Start difference. First operand 207 states and 207 transitions. Second operand has 42 states, 41 states have (on average 4.926829268292683) internal successors, (202), 42 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 07:25:17,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:17,209 INFO L93 Difference]: Finished difference Result 211 states and 211 transitions. [2021-11-07 07:25:17,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-07 07:25:17,210 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 4.926829268292683) internal successors, (202), 42 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 07:25:17,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:17,211 INFO L225 Difference]: With dead ends: 211 [2021-11-07 07:25:17,211 INFO L226 Difference]: Without dead ends: 210 [2021-11-07 07:25:17,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 202 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 07:25:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-07 07:25:17,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 209. [2021-11-07 07:25:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 207 states have (on average 1.0096618357487923) internal successors, (209), 208 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 07:25:17,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 209 transitions. [2021-11-07 07:25:17,216 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 209 transitions. Word has length 202 [2021-11-07 07:25:17,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:17,217 INFO L470 AbstractCegarLoop]: Abstraction has 209 states and 209 transitions. [2021-11-07 07:25:17,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 4.926829268292683) internal successors, (202), 42 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 07:25:17,217 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 209 transitions. [2021-11-07 07:25:17,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-11-07 07:25:17,219 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:17,219 INFO L513 BasicCegarLoop]: trace histogram [41, 40, 40, 40, 40, 1, 1, 1, 1] [2021-11-07 07:25:17,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:17,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:17,441 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:25:17,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:17,441 INFO L85 PathProgramCache]: Analyzing trace with hash -975432795, now seen corresponding path program 40 times [2021-11-07 07:25:17,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:17,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349292908] [2021-11-07 07:25:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:17,442 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:19,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:19,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:19,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349292908] [2021-11-07 07:25:19,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349292908] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:19,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713233096] [2021-11-07 07:25:19,450 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:25:19,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:19,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:19,451 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:19,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2021-11-07 07:25:22,290 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:25:22,290 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:22,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-07 07:25:22,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:23,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713233096] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:23,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:23,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 85 [2021-11-07 07:25:23,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916873295] [2021-11-07 07:25:23,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-11-07 07:25:23,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:23,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-11-07 07:25:23,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=5419, Unknown=0, NotChecked=0, Total=7310 [2021-11-07 07:25:23,174 INFO L87 Difference]: Start difference. First operand 209 states and 209 transitions. Second operand has 86 states, 85 states have (on average 2.458823529411765) internal successors, (209), 86 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 07:25:24,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:24,542 INFO L93 Difference]: Finished difference Result 214 states and 214 transitions. [2021-11-07 07:25:24,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-07 07:25:24,543 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 2.458823529411765) internal successors, (209), 86 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 205 [2021-11-07 07:25:24,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:24,544 INFO L225 Difference]: With dead ends: 214 [2021-11-07 07:25:24,544 INFO L226 Difference]: Without dead ends: 213 [2021-11-07 07:25:24,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2736 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4517, Invalid=11485, Unknown=0, NotChecked=0, Total=16002 [2021-11-07 07:25:24,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-11-07 07:25:24,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 212. [2021-11-07 07:25:24,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 210 states have (on average 1.0095238095238095) internal successors, (212), 211 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2021-11-07 07:25:24,549 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 205 [2021-11-07 07:25:24,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:24,549 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2021-11-07 07:25:24,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 2.458823529411765) internal successors, (209), 86 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 07:25:24,549 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2021-11-07 07:25:24,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-07 07:25:24,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:24,550 INFO L513 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 1, 1, 1, 1] [2021-11-07 07:25:24,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:24,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:24,757 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:25:24,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1088043865, now seen corresponding path program 40 times [2021-11-07 07:25:24,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:24,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698118591] [2021-11-07 07:25:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:24,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 4060 backedges. 0 proven. 4060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:25,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:25,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698118591] [2021-11-07 07:25:25,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698118591] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:25,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657964729] [2021-11-07 07:25:25,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:25:25,512 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:25,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:25,513 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:25,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2021-11-07 07:25:28,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:25:28,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:28,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-07 07:25:28,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4060 backedges. 0 proven. 4060 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:28,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657964729] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:28,898 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:28,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2021-11-07 07:25:28,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972027179] [2021-11-07 07:25:28,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-07 07:25:28,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-07 07:25:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 07:25:28,899 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand has 43 states, 42 states have (on average 4.928571428571429) internal successors, (207), 43 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:29,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:29,056 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2021-11-07 07:25:29,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-07 07:25:29,056 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.928571428571429) internal successors, (207), 43 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2021-11-07 07:25:29,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:29,057 INFO L225 Difference]: With dead ends: 216 [2021-11-07 07:25:29,057 INFO L226 Difference]: Without dead ends: 215 [2021-11-07 07:25:29,058 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2021-11-07 07:25:29,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-07 07:25:29,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 214. [2021-11-07 07:25:29,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 212 states have (on average 1.009433962264151) internal successors, (214), 213 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:29,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 214 transitions. [2021-11-07 07:25:29,061 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 214 transitions. Word has length 207 [2021-11-07 07:25:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:29,062 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 214 transitions. [2021-11-07 07:25:29,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.928571428571429) internal successors, (207), 43 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:29,062 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 214 transitions. [2021-11-07 07:25:29,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-07 07:25:29,063 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:29,064 INFO L513 BasicCegarLoop]: trace histogram [42, 41, 41, 41, 41, 1, 1, 1, 1] [2021-11-07 07:25:29,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:29,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:29,269 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:25:29,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:29,270 INFO L85 PathProgramCache]: Analyzing trace with hash 203454065, now seen corresponding path program 41 times [2021-11-07 07:25:29,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:29,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423464709] [2021-11-07 07:25:29,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:29,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:31,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:31,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423464709] [2021-11-07 07:25:31,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423464709] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:31,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229296088] [2021-11-07 07:25:31,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:25:31,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:31,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:31,273 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:31,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2021-11-07 07:25:34,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-07 07:25:34,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:34,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 85 conjunts are in the unsatisfiable core [2021-11-07 07:25:34,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:34,820 INFO L134 CoverageAnalysis]: Checked inductivity of 4182 backedges. 0 proven. 4182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:34,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229296088] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:34,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:34,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 85] total 87 [2021-11-07 07:25:34,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476659577] [2021-11-07 07:25:34,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2021-11-07 07:25:34,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:34,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-11-07 07:25:34,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1979, Invalid=5677, Unknown=0, NotChecked=0, Total=7656 [2021-11-07 07:25:34,822 INFO L87 Difference]: Start difference. First operand 214 states and 214 transitions. Second operand has 88 states, 87 states have (on average 2.4597701149425286) internal successors, (214), 88 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:36,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:36,121 INFO L93 Difference]: Finished difference Result 219 states and 219 transitions. [2021-11-07 07:25:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-11-07 07:25:36,121 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 2.4597701149425286) internal successors, (214), 88 states have internal predecessors, (214), 0 states have call successors, (0), 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 210 [2021-11-07 07:25:36,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:36,123 INFO L225 Difference]: With dead ends: 219 [2021-11-07 07:25:36,123 INFO L226 Difference]: Without dead ends: 218 [2021-11-07 07:25:36,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2866 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4732, Invalid=12038, Unknown=0, NotChecked=0, Total=16770 [2021-11-07 07:25:36,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-07 07:25:36,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2021-11-07 07:25:36,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 215 states have (on average 1.0093023255813953) internal successors, (217), 216 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:36,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 217 transitions. [2021-11-07 07:25:36,128 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 217 transitions. Word has length 210 [2021-11-07 07:25:36,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:36,128 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 217 transitions. [2021-11-07 07:25:36,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 2.4597701149425286) internal successors, (214), 88 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:36,129 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 217 transitions. [2021-11-07 07:25:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-11-07 07:25:36,130 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:36,130 INFO L513 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 1, 1, 1, 1] [2021-11-07 07:25:36,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:36,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:36,345 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:25:36,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:36,345 INFO L85 PathProgramCache]: Analyzing trace with hash -2049137549, now seen corresponding path program 41 times [2021-11-07 07:25:36,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:36,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706799752] [2021-11-07 07:25:36,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:36,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:36,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:37,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4264 backedges. 0 proven. 4264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:37,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:37,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706799752] [2021-11-07 07:25:37,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706799752] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:37,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841091590] [2021-11-07 07:25:37,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:25:37,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:37,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:37,321 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:37,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2021-11-07 07:25:40,479 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-11-07 07:25:40,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:40,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-07 07:25:40,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 4264 backedges. 0 proven. 4264 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:41,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841091590] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:41,004 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:41,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2021-11-07 07:25:41,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80095460] [2021-11-07 07:25:41,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-07 07:25:41,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:41,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-07 07:25:41,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 07:25:41,006 INFO L87 Difference]: Start difference. First operand 217 states and 217 transitions. Second operand has 44 states, 43 states have (on average 4.930232558139535) internal successors, (212), 44 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:41,100 INFO L93 Difference]: Finished difference Result 221 states and 221 transitions. [2021-11-07 07:25:41,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-07 07:25:41,101 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 4.930232558139535) internal successors, (212), 44 states have internal predecessors, (212), 0 states have call successors, (0), 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 212 [2021-11-07 07:25:41,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:41,102 INFO L225 Difference]: With dead ends: 221 [2021-11-07 07:25:41,102 INFO L226 Difference]: Without dead ends: 220 [2021-11-07 07:25:41,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2021-11-07 07:25:41,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-07 07:25:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 219. [2021-11-07 07:25:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 217 states have (on average 1.0092165898617511) internal successors, (219), 218 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:41,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 219 transitions. [2021-11-07 07:25:41,108 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 219 transitions. Word has length 212 [2021-11-07 07:25:41,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:41,108 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 219 transitions. [2021-11-07 07:25:41,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 4.930232558139535) internal successors, (212), 44 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:41,109 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 219 transitions. [2021-11-07 07:25:41,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-11-07 07:25:41,110 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:41,110 INFO L513 BasicCegarLoop]: trace histogram [43, 42, 42, 42, 42, 1, 1, 1, 1] [2021-11-07 07:25:41,164 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:41,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-11-07 07:25:41,330 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:25:41,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:41,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1486490843, now seen corresponding path program 42 times [2021-11-07 07:25:41,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:41,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547502405] [2021-11-07 07:25:41,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:41,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:43,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:43,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:43,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547502405] [2021-11-07 07:25:43,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547502405] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:43,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036865032] [2021-11-07 07:25:43,494 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:25:43,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:43,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:43,496 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:43,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2021-11-07 07:25:46,851 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-07 07:25:46,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:46,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 87 conjunts are in the unsatisfiable core [2021-11-07 07:25:46,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4389 backedges. 0 proven. 4389 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:47,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036865032] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:47,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:47,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 89 [2021-11-07 07:25:47,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695007971] [2021-11-07 07:25:47,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2021-11-07 07:25:47,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:47,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2021-11-07 07:25:47,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2069, Invalid=5941, Unknown=0, NotChecked=0, Total=8010 [2021-11-07 07:25:47,563 INFO L87 Difference]: Start difference. First operand 219 states and 219 transitions. Second operand has 90 states, 89 states have (on average 2.460674157303371) internal successors, (219), 90 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:49,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:49,106 INFO L93 Difference]: Finished difference Result 224 states and 224 transitions. [2021-11-07 07:25:49,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-11-07 07:25:49,106 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 89 states have (on average 2.460674157303371) internal successors, (219), 90 states have internal predecessors, (219), 0 states have call successors, (0), 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 215 [2021-11-07 07:25:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:49,108 INFO L225 Difference]: With dead ends: 224 [2021-11-07 07:25:49,108 INFO L226 Difference]: Without dead ends: 223 [2021-11-07 07:25:49,109 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2999 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4952, Invalid=12604, Unknown=0, NotChecked=0, Total=17556 [2021-11-07 07:25:49,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2021-11-07 07:25:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 222. [2021-11-07 07:25:49,112 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 07:25:49,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 222 transitions. [2021-11-07 07:25:49,112 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 222 transitions. Word has length 215 [2021-11-07 07:25:49,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:49,113 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 222 transitions. [2021-11-07 07:25:49,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 89 states have (on average 2.460674157303371) internal successors, (219), 90 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:49,113 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 222 transitions. [2021-11-07 07:25:49,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-11-07 07:25:49,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:49,115 INFO L513 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 1, 1, 1, 1] [2021-11-07 07:25:49,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Ended with exit code 0 [2021-11-07 07:25:49,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:49,336 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:25:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1706411047, now seen corresponding path program 42 times [2021-11-07 07:25:49,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:49,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44326250] [2021-11-07 07:25:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:49,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 4473 backedges. 0 proven. 4473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:50,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:50,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44326250] [2021-11-07 07:25:50,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44326250] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:50,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394428441] [2021-11-07 07:25:50,143 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:25:50,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:50,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:50,144 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:50,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2021-11-07 07:25:53,676 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-07 07:25:53,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:25:53,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-07 07:25:53,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:25:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 4473 backedges. 0 proven. 4473 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:54,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1394428441] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:54,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:25:54,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 44 [2021-11-07 07:25:54,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316357155] [2021-11-07 07:25:54,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-07 07:25:54,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:25:54,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-07 07:25:54,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2021-11-07 07:25:54,350 INFO L87 Difference]: Start difference. First operand 222 states and 222 transitions. Second operand has 45 states, 44 states have (on average 4.931818181818182) internal successors, (217), 45 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:54,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:25:54,463 INFO L93 Difference]: Finished difference Result 226 states and 226 transitions. [2021-11-07 07:25:54,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-07 07:25:54,463 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 4.931818181818182) internal successors, (217), 45 states have internal predecessors, (217), 0 states have call successors, (0), 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 217 [2021-11-07 07:25:54,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:25:54,464 INFO L225 Difference]: With dead ends: 226 [2021-11-07 07:25:54,464 INFO L226 Difference]: Without dead ends: 225 [2021-11-07 07:25:54,465 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 217 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 07:25:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-11-07 07:25:54,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 224. [2021-11-07 07:25:54,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 1.009009009009009) internal successors, (224), 223 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:54,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 224 transitions. [2021-11-07 07:25:54,469 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 224 transitions. Word has length 217 [2021-11-07 07:25:54,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:25:54,469 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 224 transitions. [2021-11-07 07:25:54,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 4.931818181818182) internal successors, (217), 45 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:25:54,469 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 224 transitions. [2021-11-07 07:25:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-11-07 07:25:54,470 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:25:54,470 INFO L513 BasicCegarLoop]: trace histogram [44, 43, 43, 43, 43, 1, 1, 1, 1] [2021-11-07 07:25:54,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Forceful destruction successful, exit code 0 [2021-11-07 07:25:54,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:54,671 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:25:54,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:25:54,672 INFO L85 PathProgramCache]: Analyzing trace with hash 458639089, now seen corresponding path program 43 times [2021-11-07 07:25:54,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:25:54,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937647652] [2021-11-07 07:25:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:25:54,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:25:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:25:56,959 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:25:56,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:25:56,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937647652] [2021-11-07 07:25:56,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937647652] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:25:56,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103788778] [2021-11-07 07:25:56,960 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:25:56,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:25:56,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:25:56,961 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:25:56,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2021-11-07 07:26:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:00,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-07 07:26:00,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:26:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4601 backedges. 0 proven. 4601 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:01,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103788778] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:01,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:26:01,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 89] total 91 [2021-11-07 07:26:01,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116498925] [2021-11-07 07:26:01,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2021-11-07 07:26:01,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:01,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-11-07 07:26:01,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2161, Invalid=6211, Unknown=0, NotChecked=0, Total=8372 [2021-11-07 07:26:01,143 INFO L87 Difference]: Start difference. First operand 224 states and 224 transitions. Second operand has 92 states, 91 states have (on average 2.4615384615384617) internal successors, (224), 92 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:02,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:02,646 INFO L93 Difference]: Finished difference Result 229 states and 229 transitions. [2021-11-07 07:26:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-07 07:26:02,647 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 2.4615384615384617) internal successors, (224), 92 states have internal predecessors, (224), 0 states have call successors, (0), 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 07:26:02,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:02,648 INFO L225 Difference]: With dead ends: 229 [2021-11-07 07:26:02,648 INFO L226 Difference]: Without dead ends: 228 [2021-11-07 07:26:02,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3135 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5177, Invalid=13183, Unknown=0, NotChecked=0, Total=18360 [2021-11-07 07:26:02,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-07 07:26:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 227. [2021-11-07 07:26:02,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 225 states have (on average 1.008888888888889) internal successors, (227), 226 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 07:26:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 227 transitions. [2021-11-07 07:26:02,653 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 227 transitions. Word has length 220 [2021-11-07 07:26:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:02,653 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 227 transitions. [2021-11-07 07:26:02,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 2.4615384615384617) internal successors, (224), 92 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 227 transitions. [2021-11-07 07:26:02,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-11-07 07:26:02,654 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:02,655 INFO L513 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 1, 1, 1, 1] [2021-11-07 07:26:02,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Ended with exit code 0 [2021-11-07 07:26:02,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-11-07 07:26:02,857 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:26:02,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:02,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1629465357, now seen corresponding path program 43 times [2021-11-07 07:26:02,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:02,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008607005] [2021-11-07 07:26:02,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:02,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:02,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:03,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4687 backedges. 0 proven. 4687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:03,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:03,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008607005] [2021-11-07 07:26:03,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008607005] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:03,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918786895] [2021-11-07 07:26:03,764 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:26:03,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:03,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:26:03,765 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:26:03,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2021-11-07 07:26:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:07,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-07 07:26:07,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:26:08,174 INFO L134 CoverageAnalysis]: Checked inductivity of 4687 backedges. 0 proven. 4687 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:08,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918786895] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:08,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:26:08,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 45 [2021-11-07 07:26:08,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656883171] [2021-11-07 07:26:08,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-07 07:26:08,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:08,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-07 07:26:08,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 07:26:08,176 INFO L87 Difference]: Start difference. First operand 227 states and 227 transitions. Second operand has 46 states, 45 states have (on average 4.933333333333334) internal successors, (222), 46 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 07:26:08,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:08,303 INFO L93 Difference]: Finished difference Result 231 states and 231 transitions. [2021-11-07 07:26:08,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-07 07:26:08,304 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 4.933333333333334) internal successors, (222), 46 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) Word has length 222 [2021-11-07 07:26:08,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:08,305 INFO L225 Difference]: With dead ends: 231 [2021-11-07 07:26:08,305 INFO L226 Difference]: Without dead ends: 230 [2021-11-07 07:26:08,306 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1035, Invalid=1035, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 07:26:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-11-07 07:26:08,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2021-11-07 07:26:08,309 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 07:26:08,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 229 transitions. [2021-11-07 07:26:08,309 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 229 transitions. Word has length 222 [2021-11-07 07:26:08,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:08,309 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 229 transitions. [2021-11-07 07:26:08,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 4.933333333333334) internal successors, (222), 46 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 07:26:08,310 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 229 transitions. [2021-11-07 07:26:08,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-07 07:26:08,311 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:08,311 INFO L513 BasicCegarLoop]: trace histogram [45, 44, 44, 44, 44, 1, 1, 1, 1] [2021-11-07 07:26:08,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2021-11-07 07:26:08,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-11-07 07:26:08,511 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:26:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1682017627, now seen corresponding path program 44 times [2021-11-07 07:26:08,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:08,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525478202] [2021-11-07 07:26:08,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:08,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:11,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:11,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:11,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525478202] [2021-11-07 07:26:11,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525478202] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:11,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396213944] [2021-11-07 07:26:11,103 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:26:11,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:11,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:26:11,104 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:26:11,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2021-11-07 07:26:14,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:26:14,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:26:14,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-07 07:26:14,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:26:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4818 backedges. 0 proven. 4818 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:15,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396213944] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:15,552 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:26:15,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 91] total 93 [2021-11-07 07:26:15,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725771886] [2021-11-07 07:26:15,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-11-07 07:26:15,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:15,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-11-07 07:26:15,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-11-07 07:26:15,555 INFO L87 Difference]: Start difference. First operand 229 states and 229 transitions. Second operand has 94 states, 93 states have (on average 2.4623655913978495) internal successors, (229), 94 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 07:26:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:17,167 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2021-11-07 07:26:17,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-11-07 07:26:17,168 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4623655913978495) internal successors, (229), 94 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) Word has length 225 [2021-11-07 07:26:17,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:17,169 INFO L225 Difference]: With dead ends: 234 [2021-11-07 07:26:17,169 INFO L226 Difference]: Without dead ends: 233 [2021-11-07 07:26:17,171 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3274 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5407, Invalid=13775, Unknown=0, NotChecked=0, Total=19182 [2021-11-07 07:26:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-07 07:26:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 232. [2021-11-07 07:26:17,180 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 07:26:17,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 232 transitions. [2021-11-07 07:26:17,181 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 232 transitions. Word has length 225 [2021-11-07 07:26:17,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:17,182 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 232 transitions. [2021-11-07 07:26:17,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4623655913978495) internal successors, (229), 94 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 07:26:17,182 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 232 transitions. [2021-11-07 07:26:17,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-07 07:26:17,184 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:17,185 INFO L513 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 1, 1, 1, 1] [2021-11-07 07:26:17,239 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Forceful destruction successful, exit code 0 [2021-11-07 07:26:17,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:17,403 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:26:17,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:17,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1511234649, now seen corresponding path program 44 times [2021-11-07 07:26:17,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:17,403 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203697065] [2021-11-07 07:26:17,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:17,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:18,351 INFO L134 CoverageAnalysis]: Checked inductivity of 4906 backedges. 0 proven. 4906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:18,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:18,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203697065] [2021-11-07 07:26:18,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203697065] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:18,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203254814] [2021-11-07 07:26:18,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:26:18,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:18,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:26:18,355 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:26:18,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2021-11-07 07:26:22,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:26:22,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:26:22,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 46 conjunts are in the unsatisfiable core [2021-11-07 07:26:22,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:26:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4906 backedges. 0 proven. 4906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:22,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203254814] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:22,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:26:22,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 46 [2021-11-07 07:26:22,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286403385] [2021-11-07 07:26:22,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-07 07:26:22,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:22,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-07 07:26:22,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2021-11-07 07:26:22,964 INFO L87 Difference]: Start difference. First operand 232 states and 232 transitions. Second operand has 47 states, 46 states have (on average 4.934782608695652) internal successors, (227), 47 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 07:26:23,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:23,125 INFO L93 Difference]: Finished difference Result 236 states and 236 transitions. [2021-11-07 07:26:23,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-07 07:26:23,126 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 4.934782608695652) internal successors, (227), 47 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 07:26:23,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:23,128 INFO L225 Difference]: With dead ends: 236 [2021-11-07 07:26:23,128 INFO L226 Difference]: Without dead ends: 235 [2021-11-07 07:26:23,129 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 227 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 07:26:23,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-11-07 07:26:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2021-11-07 07:26:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 232 states have (on average 1.0086206896551724) internal successors, (234), 233 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 07:26:23,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 234 transitions. [2021-11-07 07:26:23,135 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 234 transitions. Word has length 227 [2021-11-07 07:26:23,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:23,136 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 234 transitions. [2021-11-07 07:26:23,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 4.934782608695652) internal successors, (227), 47 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 07:26:23,136 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 234 transitions. [2021-11-07 07:26:23,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-07 07:26:23,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:23,138 INFO L513 BasicCegarLoop]: trace histogram [46, 45, 45, 45, 45, 1, 1, 1, 1] [2021-11-07 07:26:23,188 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Ended with exit code 0 [2021-11-07 07:26:23,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:23,345 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:26:23,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:23,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1344178319, now seen corresponding path program 45 times [2021-11-07 07:26:23,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:23,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535735365] [2021-11-07 07:26:23,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:23,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:23,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:26,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:26,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535735365] [2021-11-07 07:26:26,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535735365] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:26,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519686097] [2021-11-07 07:26:26,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:26:26,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:26,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:26:26,167 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:26:26,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2021-11-07 07:26:30,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-07 07:26:30,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:26:30,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-07 07:26:30,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:26:30,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5040 backedges. 0 proven. 5040 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:30,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519686097] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:30,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:26:30,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 95 [2021-11-07 07:26:30,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109989392] [2021-11-07 07:26:30,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-07 07:26:30,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:30,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-07 07:26:30,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2021-11-07 07:26:30,890 INFO L87 Difference]: Start difference. First operand 234 states and 234 transitions. Second operand has 96 states, 95 states have (on average 2.463157894736842) internal successors, (234), 96 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 07:26:32,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:32,572 INFO L93 Difference]: Finished difference Result 239 states and 239 transitions. [2021-11-07 07:26:32,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-11-07 07:26:32,572 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 2.463157894736842) internal successors, (234), 96 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 230 [2021-11-07 07:26:32,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:32,574 INFO L225 Difference]: With dead ends: 239 [2021-11-07 07:26:32,574 INFO L226 Difference]: Without dead ends: 238 [2021-11-07 07:26:32,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3416 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=5642, Invalid=14380, Unknown=0, NotChecked=0, Total=20022 [2021-11-07 07:26:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-07 07:26:32,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2021-11-07 07:26:32,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 235 states have (on average 1.0085106382978724) internal successors, (237), 236 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 07:26:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 237 transitions. [2021-11-07 07:26:32,579 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 237 transitions. Word has length 230 [2021-11-07 07:26:32,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:32,579 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 237 transitions. [2021-11-07 07:26:32,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 2.463157894736842) internal successors, (234), 96 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 07:26:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 237 transitions. [2021-11-07 07:26:32,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-07 07:26:32,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:32,580 INFO L513 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 1, 1, 1, 1] [2021-11-07 07:26:32,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Forceful destruction successful, exit code 0 [2021-11-07 07:26:32,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:32,781 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:26:32,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:32,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1029793139, now seen corresponding path program 45 times [2021-11-07 07:26:32,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:32,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029485233] [2021-11-07 07:26:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:32,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:33,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:33,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:33,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029485233] [2021-11-07 07:26:33,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029485233] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:33,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760581344] [2021-11-07 07:26:33,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:26:33,708 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:33,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:26:33,709 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:26:33,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2021-11-07 07:26:37,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-11-07 07:26:37,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:26:37,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-07 07:26:37,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:26:38,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5130 backedges. 0 proven. 5130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:38,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760581344] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:38,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:26:38,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 47 [2021-11-07 07:26:38,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023879656] [2021-11-07 07:26:38,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-11-07 07:26:38,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:38,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-11-07 07:26:38,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 07:26:38,391 INFO L87 Difference]: Start difference. First operand 237 states and 237 transitions. Second operand has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 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 07:26:38,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:38,540 INFO L93 Difference]: Finished difference Result 241 states and 241 transitions. [2021-11-07 07:26:38,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-07 07:26:38,540 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 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) Word has length 232 [2021-11-07 07:26:38,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:38,542 INFO L225 Difference]: With dead ends: 241 [2021-11-07 07:26:38,542 INFO L226 Difference]: Without dead ends: 240 [2021-11-07 07:26:38,542 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 232 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 07:26:38,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-11-07 07:26:38,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2021-11-07 07:26:38,547 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 07:26:38,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2021-11-07 07:26:38,548 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 232 [2021-11-07 07:26:38,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:38,548 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2021-11-07 07:26:38,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 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 07:26:38,549 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2021-11-07 07:26:38,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-07 07:26:38,550 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:38,550 INFO L513 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-11-07 07:26:38,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2021-11-07 07:26:38,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:38,751 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:26:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash -383938011, now seen corresponding path program 46 times [2021-11-07 07:26:38,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:38,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805175556] [2021-11-07 07:26:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:38,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:38,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:41,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:41,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805175556] [2021-11-07 07:26:41,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805175556] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:41,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728549440] [2021-11-07 07:26:41,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:26:41,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:41,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:26:41,809 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:26:41,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2021-11-07 07:26:45,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:26:45,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:26:45,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-07 07:26:45,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:26:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:46,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728549440] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:46,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:26:46,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95] total 97 [2021-11-07 07:26:46,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346578052] [2021-11-07 07:26:46,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-11-07 07:26:46,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:46,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-11-07 07:26:46,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2449, Invalid=7057, Unknown=0, NotChecked=0, Total=9506 [2021-11-07 07:26:46,677 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand has 98 states, 97 states have (on average 2.463917525773196) internal successors, (239), 98 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 07:26:48,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:48,557 INFO L93 Difference]: Finished difference Result 244 states and 244 transitions. [2021-11-07 07:26:48,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-07 07:26:48,557 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 97 states have (on average 2.463917525773196) internal successors, (239), 98 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) Word has length 235 [2021-11-07 07:26:48,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:48,559 INFO L225 Difference]: With dead ends: 244 [2021-11-07 07:26:48,559 INFO L226 Difference]: Without dead ends: 243 [2021-11-07 07:26:48,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3561 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=5882, Invalid=14998, Unknown=0, NotChecked=0, Total=20880 [2021-11-07 07:26:48,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-07 07:26:48,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 242. [2021-11-07 07:26:48,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 241 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:26:48,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2021-11-07 07:26:48,565 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 235 [2021-11-07 07:26:48,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:48,566 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2021-11-07 07:26:48,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 97 states have (on average 2.463917525773196) internal successors, (239), 98 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 07:26:48,566 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2021-11-07 07:26:48,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-11-07 07:26:48,568 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:48,568 INFO L513 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2021-11-07 07:26:48,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Forceful destruction successful, exit code 0 [2021-11-07 07:26:48,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-11-07 07:26:48,777 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:26:48,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash 402760487, now seen corresponding path program 46 times [2021-11-07 07:26:48,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:48,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313872698] [2021-11-07 07:26:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:48,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:49,839 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:49,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:49,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313872698] [2021-11-07 07:26:49,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313872698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:49,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830336778] [2021-11-07 07:26:49,839 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:26:49,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:49,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:26:49,840 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:26:49,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2021-11-07 07:26:53,878 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:26:53,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:26:53,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-07 07:26:53,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:26:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:54,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830336778] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:54,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:26:54,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 48 [2021-11-07 07:26:54,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232923922] [2021-11-07 07:26:54,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-11-07 07:26:54,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:26:54,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-11-07 07:26:54,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-11-07 07:26:54,557 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand has 49 states, 48 states have (on average 4.9375) internal successors, (237), 49 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 07:26:54,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:26:54,677 INFO L93 Difference]: Finished difference Result 246 states and 246 transitions. [2021-11-07 07:26:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-11-07 07:26:54,678 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 4.9375) internal successors, (237), 49 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 07:26:54,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:26:54,679 INFO L225 Difference]: With dead ends: 246 [2021-11-07 07:26:54,680 INFO L226 Difference]: Without dead ends: 245 [2021-11-07 07:26:54,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 237 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 07:26:54,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-11-07 07:26:54,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 244. [2021-11-07 07:26:54,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 242 states have (on average 1.0082644628099173) internal successors, (244), 243 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 07:26:54,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 244 transitions. [2021-11-07 07:26:54,684 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 244 transitions. Word has length 237 [2021-11-07 07:26:54,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:26:54,684 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 244 transitions. [2021-11-07 07:26:54,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 4.9375) internal successors, (237), 49 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 07:26:54,685 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 244 transitions. [2021-11-07 07:26:54,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-11-07 07:26:54,686 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:26:54,686 INFO L513 BasicCegarLoop]: trace histogram [48, 47, 47, 47, 47, 1, 1, 1, 1] [2021-11-07 07:26:54,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Forceful destruction successful, exit code 0 [2021-11-07 07:26:54,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:54,886 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:26:54,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:26:54,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1500903439, now seen corresponding path program 47 times [2021-11-07 07:26:54,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:26:54,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467884991] [2021-11-07 07:26:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:26:54,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:26:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:26:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:26:57,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:26:57,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467884991] [2021-11-07 07:26:57,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467884991] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:26:57,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336507465] [2021-11-07 07:26:57,914 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:26:57,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:26:57,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:26:57,917 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:26:57,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2021-11-07 07:27:01,923 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-07 07:27:01,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:27:01,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-07 07:27:01,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:27:02,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5499 backedges. 0 proven. 5499 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:02,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336507465] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:02,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:27:02,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97] total 99 [2021-11-07 07:27:02,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420402366] [2021-11-07 07:27:02,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-07 07:27:02,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:27:02,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-07 07:27:02,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2549, Invalid=7351, Unknown=0, NotChecked=0, Total=9900 [2021-11-07 07:27:02,691 INFO L87 Difference]: Start difference. First operand 244 states and 244 transitions. Second operand has 100 states, 99 states have (on average 2.4646464646464645) internal successors, (244), 100 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 07:27:04,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:27:04,558 INFO L93 Difference]: Finished difference Result 249 states and 249 transitions. [2021-11-07 07:27:04,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-11-07 07:27:04,559 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 99 states have (on average 2.4646464646464645) internal successors, (244), 100 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 240 [2021-11-07 07:27:04,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:27:04,560 INFO L225 Difference]: With dead ends: 249 [2021-11-07 07:27:04,560 INFO L226 Difference]: Without dead ends: 248 [2021-11-07 07:27:04,562 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3709 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6127, Invalid=15629, Unknown=0, NotChecked=0, Total=21756 [2021-11-07 07:27:04,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-07 07:27:04,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 247. [2021-11-07 07:27:04,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 245 states have (on average 1.0081632653061225) internal successors, (247), 246 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:04,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 247 transitions. [2021-11-07 07:27:04,569 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 247 transitions. Word has length 240 [2021-11-07 07:27:04,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:27:04,569 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 247 transitions. [2021-11-07 07:27:04,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 99 states have (on average 2.4646464646464645) internal successors, (244), 100 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 07:27:04,570 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 247 transitions. [2021-11-07 07:27:04,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-11-07 07:27:04,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:27:04,572 INFO L513 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 1, 1, 1, 1] [2021-11-07 07:27:04,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2021-11-07 07:27:04,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:27:04,785 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:27:04,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:27:04,785 INFO L85 PathProgramCache]: Analyzing trace with hash 740808179, now seen corresponding path program 47 times [2021-11-07 07:27:04,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:27:04,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181095442] [2021-11-07 07:27:04,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:27:04,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:27:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:27:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 5593 backedges. 0 proven. 5593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:06,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:27:06,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181095442] [2021-11-07 07:27:06,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181095442] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:06,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808592819] [2021-11-07 07:27:06,151 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:27:06,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:27:06,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:27:06,152 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:27:06,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2021-11-07 07:27:10,646 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-11-07 07:27:10,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:27:10,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 566 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-07 07:27:10,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:27:11,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5593 backedges. 0 proven. 5593 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:11,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808592819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:11,376 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:27:11,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 49 [2021-11-07 07:27:11,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288226691] [2021-11-07 07:27:11,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-07 07:27:11,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:27:11,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-07 07:27:11,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 07:27:11,378 INFO L87 Difference]: Start difference. First operand 247 states and 247 transitions. Second operand has 50 states, 49 states have (on average 4.938775510204081) internal successors, (242), 50 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:27:11,502 INFO L93 Difference]: Finished difference Result 251 states and 251 transitions. [2021-11-07 07:27:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 07:27:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 4.938775510204081) internal successors, (242), 50 states have internal predecessors, (242), 0 states have call successors, (0), 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 242 [2021-11-07 07:27:11,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:27:11,504 INFO L225 Difference]: With dead ends: 251 [2021-11-07 07:27:11,504 INFO L226 Difference]: Without dead ends: 250 [2021-11-07 07:27:11,505 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1225, Invalid=1225, Unknown=0, NotChecked=0, Total=2450 [2021-11-07 07:27:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-11-07 07:27:11,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 249. [2021-11-07 07:27:11,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 247 states have (on average 1.008097165991903) internal successors, (249), 248 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:11,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 249 transitions. [2021-11-07 07:27:11,509 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 249 transitions. Word has length 242 [2021-11-07 07:27:11,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:27:11,509 INFO L470 AbstractCegarLoop]: Abstraction has 249 states and 249 transitions. [2021-11-07 07:27:11,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 4.938775510204081) internal successors, (242), 50 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:11,509 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 249 transitions. [2021-11-07 07:27:11,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-11-07 07:27:11,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:27:11,511 INFO L513 BasicCegarLoop]: trace histogram [49, 48, 48, 48, 48, 1, 1, 1, 1] [2021-11-07 07:27:11,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2021-11-07 07:27:11,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-11-07 07:27:11,711 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:27:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:27:11,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1874547109, now seen corresponding path program 48 times [2021-11-07 07:27:11,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:27:11,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211779548] [2021-11-07 07:27:11,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:27:11,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:27:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:27:14,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:14,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:27:14,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211779548] [2021-11-07 07:27:14,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211779548] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:14,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549401640] [2021-11-07 07:27:14,864 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:27:14,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:27:14,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:27:14,865 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:27:14,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2021-11-07 07:27:19,201 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-07 07:27:19,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:27:19,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 573 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-07 07:27:19,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:27:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 5736 backedges. 0 proven. 5736 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:19,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549401640] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:19,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:27:19,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 99] total 101 [2021-11-07 07:27:19,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501096958] [2021-11-07 07:27:19,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2021-11-07 07:27:19,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:27:19,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-11-07 07:27:19,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2651, Invalid=7651, Unknown=0, NotChecked=0, Total=10302 [2021-11-07 07:27:19,922 INFO L87 Difference]: Start difference. First operand 249 states and 249 transitions. Second operand has 102 states, 101 states have (on average 2.4653465346534653) internal successors, (249), 102 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:21,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:27:21,792 INFO L93 Difference]: Finished difference Result 254 states and 254 transitions. [2021-11-07 07:27:21,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-11-07 07:27:21,793 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 101 states have (on average 2.4653465346534653) internal successors, (249), 102 states have internal predecessors, (249), 0 states have call successors, (0), 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 245 [2021-11-07 07:27:21,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:27:21,794 INFO L225 Difference]: With dead ends: 254 [2021-11-07 07:27:21,794 INFO L226 Difference]: Without dead ends: 253 [2021-11-07 07:27:21,796 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3860 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=6377, Invalid=16273, Unknown=0, NotChecked=0, Total=22650 [2021-11-07 07:27:21,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-07 07:27:21,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2021-11-07 07:27:21,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 250 states have (on average 1.008) internal successors, (252), 251 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 252 transitions. [2021-11-07 07:27:21,800 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 252 transitions. Word has length 245 [2021-11-07 07:27:21,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:27:21,800 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 252 transitions. [2021-11-07 07:27:21,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 101 states have (on average 2.4653465346534653) internal successors, (249), 102 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:21,801 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 252 transitions. [2021-11-07 07:27:21,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-11-07 07:27:21,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:27:21,808 INFO L513 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 1, 1, 1, 1] [2021-11-07 07:27:21,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2021-11-07 07:27:22,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable98 [2021-11-07 07:27:22,021 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:27:22,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:27:22,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1848476327, now seen corresponding path program 48 times [2021-11-07 07:27:22,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:27:22,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480377263] [2021-11-07 07:27:22,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:27:22,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:27:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:27:23,203 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:23,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:27:23,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480377263] [2021-11-07 07:27:23,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480377263] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:23,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656487827] [2021-11-07 07:27:23,204 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:27:23,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:27:23,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:27:23,205 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:27:23,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2021-11-07 07:27:27,581 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-11-07 07:27:27,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:27:27,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 50 conjunts are in the unsatisfiable core [2021-11-07 07:27:27,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:27:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5832 backedges. 0 proven. 5832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:28,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656487827] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:28,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:27:28,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 50 [2021-11-07 07:27:28,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868696944] [2021-11-07 07:27:28,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-07 07:27:28,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:27:28,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-07 07:27:28,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 07:27:28,277 INFO L87 Difference]: Start difference. First operand 252 states and 252 transitions. Second operand has 51 states, 50 states have (on average 4.94) internal successors, (247), 51 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:28,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:27:28,408 INFO L93 Difference]: Finished difference Result 256 states and 256 transitions. [2021-11-07 07:27:28,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-07 07:27:28,409 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 4.94) internal successors, (247), 51 states have internal predecessors, (247), 0 states have call successors, (0), 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 247 [2021-11-07 07:27:28,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:27:28,410 INFO L225 Difference]: With dead ends: 256 [2021-11-07 07:27:28,410 INFO L226 Difference]: Without dead ends: 255 [2021-11-07 07:27:28,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 07:27:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-11-07 07:27:28,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2021-11-07 07:27:28,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 252 states have (on average 1.007936507936508) internal successors, (254), 253 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:28,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2021-11-07 07:27:28,415 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 247 [2021-11-07 07:27:28,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:27:28,415 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2021-11-07 07:27:28,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 4.94) internal successors, (247), 51 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:28,416 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2021-11-07 07:27:28,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2021-11-07 07:27:28,417 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:27:28,417 INFO L513 BasicCegarLoop]: trace histogram [50, 49, 49, 49, 49, 1, 1, 1, 1] [2021-11-07 07:27:28,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2021-11-07 07:27:28,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:27:28,617 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:27:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:27:28,618 INFO L85 PathProgramCache]: Analyzing trace with hash -2112358287, now seen corresponding path program 49 times [2021-11-07 07:27:28,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:27:28,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979026192] [2021-11-07 07:27:28,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:27:28,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:27:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:27:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:31,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:27:31,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979026192] [2021-11-07 07:27:31,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979026192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:31,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645600169] [2021-11-07 07:27:31,946 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:27:31,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:27:31,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:27:31,952 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:27:31,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2021-11-07 07:27:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:27:36,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 584 conjuncts, 101 conjunts are in the unsatisfiable core [2021-11-07 07:27:36,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:27:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5978 backedges. 0 proven. 5978 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:37,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645600169] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:37,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:27:37,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101] total 103 [2021-11-07 07:27:37,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072998104] [2021-11-07 07:27:37,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-11-07 07:27:37,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:27:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-11-07 07:27:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2755, Invalid=7957, Unknown=0, NotChecked=0, Total=10712 [2021-11-07 07:27:37,373 INFO L87 Difference]: Start difference. First operand 254 states and 254 transitions. Second operand has 104 states, 103 states have (on average 2.466019417475728) internal successors, (254), 104 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:39,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:27:39,330 INFO L93 Difference]: Finished difference Result 259 states and 259 transitions. [2021-11-07 07:27:39,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-07 07:27:39,331 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 103 states have (on average 2.466019417475728) internal successors, (254), 104 states have internal predecessors, (254), 0 states have call successors, (0), 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 250 [2021-11-07 07:27:39,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:27:39,333 INFO L225 Difference]: With dead ends: 259 [2021-11-07 07:27:39,333 INFO L226 Difference]: Without dead ends: 258 [2021-11-07 07:27:39,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4014 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=6632, Invalid=16930, Unknown=0, NotChecked=0, Total=23562 [2021-11-07 07:27:39,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-07 07:27:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2021-11-07 07:27:39,342 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 07:27:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2021-11-07 07:27:39,343 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 250 [2021-11-07 07:27:39,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:27:39,343 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2021-11-07 07:27:39,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 103 states have (on average 2.466019417475728) internal successors, (254), 104 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:39,344 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2021-11-07 07:27:39,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-11-07 07:27:39,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:27:39,346 INFO L513 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 1, 1, 1, 1] [2021-11-07 07:27:39,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2021-11-07 07:27:39,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100,99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:27:39,549 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:27:39,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:27:39,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1543218803, now seen corresponding path program 49 times [2021-11-07 07:27:39,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:27:39,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460171797] [2021-11-07 07:27:39,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:27:39,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:27:39,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:27:40,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6076 backedges. 0 proven. 6076 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:40,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:27:40,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460171797] [2021-11-07 07:27:40,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460171797] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:40,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501984174] [2021-11-07 07:27:40,652 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:27:40,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:27:40,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:27:40,653 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:27:40,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2021-11-07 07:27:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:27:45,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-07 07:27:45,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:27:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6076 backedges. 0 proven. 6076 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:45,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501984174] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:45,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:27:45,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 51 [2021-11-07 07:27:45,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687932543] [2021-11-07 07:27:45,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-07 07:27:45,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:27:45,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-07 07:27:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:27:45,774 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand has 52 states, 51 states have (on average 4.9411764705882355) internal successors, (252), 52 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:27:45,913 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2021-11-07 07:27:45,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-07 07:27:45,914 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 4.9411764705882355) internal successors, (252), 52 states have internal predecessors, (252), 0 states have call successors, (0), 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 252 [2021-11-07 07:27:45,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:27:45,915 INFO L225 Difference]: With dead ends: 261 [2021-11-07 07:27:45,915 INFO L226 Difference]: Without dead ends: 260 [2021-11-07 07:27:45,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2021-11-07 07:27:45,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-11-07 07:27:45,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 259. [2021-11-07 07:27:45,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 257 states have (on average 1.0077821011673151) internal successors, (259), 258 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:45,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 259 transitions. [2021-11-07 07:27:45,920 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 259 transitions. Word has length 252 [2021-11-07 07:27:45,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:27:45,920 INFO L470 AbstractCegarLoop]: Abstraction has 259 states and 259 transitions. [2021-11-07 07:27:45,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 4.9411764705882355) internal successors, (252), 52 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:45,920 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 259 transitions. [2021-11-07 07:27:45,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2021-11-07 07:27:45,921 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:27:45,922 INFO L513 BasicCegarLoop]: trace histogram [51, 50, 50, 50, 50, 1, 1, 1, 1] [2021-11-07 07:27:45,960 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2021-11-07 07:27:46,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-11-07 07:27:46,125 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:27:46,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:27:46,125 INFO L85 PathProgramCache]: Analyzing trace with hash 701477157, now seen corresponding path program 50 times [2021-11-07 07:27:46,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:27:46,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276335784] [2021-11-07 07:27:46,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:27:46,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:27:46,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:27:49,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:49,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:27:49,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276335784] [2021-11-07 07:27:49,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276335784] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:49,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137472483] [2021-11-07 07:27:49,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:27:49,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:27:49,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:27:49,392 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:27:49,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2021-11-07 07:27:54,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:27:54,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:27:54,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 595 conjuncts, 103 conjunts are in the unsatisfiable core [2021-11-07 07:27:54,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:27:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 6225 backedges. 0 proven. 6225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:54,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137472483] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:54,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:27:54,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 103] total 105 [2021-11-07 07:27:54,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840326201] [2021-11-07 07:27:54,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2021-11-07 07:27:54,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:27:54,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-11-07 07:27:54,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2861, Invalid=8269, Unknown=0, NotChecked=0, Total=11130 [2021-11-07 07:27:54,853 INFO L87 Difference]: Start difference. First operand 259 states and 259 transitions. Second operand has 106 states, 105 states have (on average 2.466666666666667) internal successors, (259), 106 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:56,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:27:56,963 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2021-11-07 07:27:56,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-11-07 07:27:56,964 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 2.466666666666667) internal successors, (259), 106 states have internal predecessors, (259), 0 states have call successors, (0), 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 07:27:56,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:27:56,964 INFO L225 Difference]: With dead ends: 264 [2021-11-07 07:27:56,964 INFO L226 Difference]: Without dead ends: 263 [2021-11-07 07:27:56,966 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4171 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=6892, Invalid=17600, Unknown=0, NotChecked=0, Total=24492 [2021-11-07 07:27:56,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-11-07 07:27:56,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 262. [2021-11-07 07:27:56,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 260 states have (on average 1.0076923076923077) internal successors, (262), 261 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 07:27:56,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 262 transitions. [2021-11-07 07:27:56,971 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 262 transitions. Word has length 255 [2021-11-07 07:27:56,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:27:56,972 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 262 transitions. [2021-11-07 07:27:56,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 2.466666666666667) internal successors, (259), 106 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:27:56,972 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 262 transitions. [2021-11-07 07:27:56,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-11-07 07:27:56,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:27:56,973 INFO L513 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 1, 1, 1, 1] [2021-11-07 07:27:57,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2021-11-07 07:27:57,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-11-07 07:27:57,173 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:27:57,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:27:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash -190315993, now seen corresponding path program 50 times [2021-11-07 07:27:57,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:27:57,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087228938] [2021-11-07 07:27:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:27:57,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:27:57,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:27:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 6325 backedges. 0 proven. 6325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:27:58,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:27:58,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087228938] [2021-11-07 07:27:58,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087228938] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:27:58,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334626883] [2021-11-07 07:27:58,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:27:58,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:27:58,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:27:58,349 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:27:58,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2021-11-07 07:28:03,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:28:03,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:28:03,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 599 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-07 07:28:03,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:28:04,055 INFO L134 CoverageAnalysis]: Checked inductivity of 6325 backedges. 0 proven. 6325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:04,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334626883] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:04,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:28:04,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 52 [2021-11-07 07:28:04,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511551013] [2021-11-07 07:28:04,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-07 07:28:04,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:28:04,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-07 07:28:04,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 07:28:04,057 INFO L87 Difference]: Start difference. First operand 262 states and 262 transitions. Second operand has 53 states, 52 states have (on average 4.9423076923076925) internal successors, (257), 53 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 07:28:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:28:04,187 INFO L93 Difference]: Finished difference Result 266 states and 266 transitions. [2021-11-07 07:28:04,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-07 07:28:04,187 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 4.9423076923076925) internal successors, (257), 53 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) Word has length 257 [2021-11-07 07:28:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:28:04,188 INFO L225 Difference]: With dead ends: 266 [2021-11-07 07:28:04,188 INFO L226 Difference]: Without dead ends: 265 [2021-11-07 07:28:04,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2021-11-07 07:28:04,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-07 07:28:04,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 264. [2021-11-07 07:28:04,192 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 07:28:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 264 transitions. [2021-11-07 07:28:04,192 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 264 transitions. Word has length 257 [2021-11-07 07:28:04,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:28:04,193 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 264 transitions. [2021-11-07 07:28:04,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 4.9423076923076925) internal successors, (257), 53 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 07:28:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 264 transitions. [2021-11-07 07:28:04,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2021-11-07 07:28:04,194 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:28:04,194 INFO L513 BasicCegarLoop]: trace histogram [52, 51, 51, 51, 51, 1, 1, 1, 1] [2021-11-07 07:28:04,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Forceful destruction successful, exit code 0 [2021-11-07 07:28:04,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-11-07 07:28:04,394 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:28:04,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:28:04,395 INFO L85 PathProgramCache]: Analyzing trace with hash -346863375, now seen corresponding path program 51 times [2021-11-07 07:28:04,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:28:04,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410119395] [2021-11-07 07:28:04,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:28:04,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:28:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:28:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:07,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:28:07,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410119395] [2021-11-07 07:28:07,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410119395] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:07,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057498988] [2021-11-07 07:28:07,913 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:28:07,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:28:07,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:28:07,914 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:28:07,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2021-11-07 07:28:12,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-07 07:28:12,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:28:12,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 105 conjunts are in the unsatisfiable core [2021-11-07 07:28:12,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:28:13,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6477 backedges. 0 proven. 6477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:13,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057498988] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:13,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:28:13,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 107 [2021-11-07 07:28:13,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308227075] [2021-11-07 07:28:13,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2021-11-07 07:28:13,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:28:13,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2021-11-07 07:28:13,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2969, Invalid=8587, Unknown=0, NotChecked=0, Total=11556 [2021-11-07 07:28:13,572 INFO L87 Difference]: Start difference. First operand 264 states and 264 transitions. Second operand has 108 states, 107 states have (on average 2.467289719626168) internal successors, (264), 108 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 07:28:15,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:28:15,725 INFO L93 Difference]: Finished difference Result 269 states and 269 transitions. [2021-11-07 07:28:15,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-11-07 07:28:15,726 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 107 states have (on average 2.467289719626168) internal successors, (264), 108 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) Word has length 260 [2021-11-07 07:28:15,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:28:15,727 INFO L225 Difference]: With dead ends: 269 [2021-11-07 07:28:15,727 INFO L226 Difference]: Without dead ends: 268 [2021-11-07 07:28:15,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4331 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7157, Invalid=18283, Unknown=0, NotChecked=0, Total=25440 [2021-11-07 07:28:15,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-07 07:28:15,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 267. [2021-11-07 07:28:15,734 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 07:28:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 267 transitions. [2021-11-07 07:28:15,735 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 267 transitions. Word has length 260 [2021-11-07 07:28:15,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:28:15,735 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 267 transitions. [2021-11-07 07:28:15,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 107 states have (on average 2.467289719626168) internal successors, (264), 108 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 07:28:15,735 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 267 transitions. [2021-11-07 07:28:15,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2021-11-07 07:28:15,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:28:15,736 INFO L513 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 1, 1, 1, 1] [2021-11-07 07:28:15,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Forceful destruction successful, exit code 0 [2021-11-07 07:28:15,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:28:15,937 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:28:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:28:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1671747315, now seen corresponding path program 51 times [2021-11-07 07:28:15,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:28:15,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471278595] [2021-11-07 07:28:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:28:15,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:28:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:28:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6579 backedges. 0 proven. 6579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:17,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:28:17,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471278595] [2021-11-07 07:28:17,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471278595] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:17,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716406729] [2021-11-07 07:28:17,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:28:17,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:28:17,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:28:17,108 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:28:17,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2021-11-07 07:28:21,942 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-11-07 07:28:21,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:28:21,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-07 07:28:21,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:28:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6579 backedges. 0 proven. 6579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:22,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716406729] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:22,695 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:28:22,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 53 [2021-11-07 07:28:22,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507896518] [2021-11-07 07:28:22,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-11-07 07:28:22,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:28:22,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-11-07 07:28:22,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1431, Invalid=1431, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 07:28:22,697 INFO L87 Difference]: Start difference. First operand 267 states and 267 transitions. Second operand has 54 states, 53 states have (on average 4.943396226415095) internal successors, (262), 54 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 07:28:22,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:28:22,834 INFO L93 Difference]: Finished difference Result 271 states and 271 transitions. [2021-11-07 07:28:22,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-07 07:28:22,835 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 4.943396226415095) internal successors, (262), 54 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 07:28:22,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:28:22,835 INFO L225 Difference]: With dead ends: 271 [2021-11-07 07:28:22,835 INFO L226 Difference]: Without dead ends: 270 [2021-11-07 07:28:22,836 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 262 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 07:28:22,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-07 07:28:22,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 269. [2021-11-07 07:28:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 267 states have (on average 1.0074906367041199) internal successors, (269), 268 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 07:28:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 269 transitions. [2021-11-07 07:28:22,839 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 269 transitions. Word has length 262 [2021-11-07 07:28:22,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:28:22,840 INFO L470 AbstractCegarLoop]: Abstraction has 269 states and 269 transitions. [2021-11-07 07:28:22,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 4.943396226415095) internal successors, (262), 54 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 07:28:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 269 transitions. [2021-11-07 07:28:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-07 07:28:22,841 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:28:22,841 INFO L513 BasicCegarLoop]: trace histogram [53, 52, 52, 52, 52, 1, 1, 1, 1] [2021-11-07 07:28:22,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2021-11-07 07:28:23,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-11-07 07:28:23,041 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:28:23,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:28:23,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1416449883, now seen corresponding path program 52 times [2021-11-07 07:28:23,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:28:23,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530265548] [2021-11-07 07:28:23,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:28:23,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:28:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:28:26,395 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:26,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:28:26,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530265548] [2021-11-07 07:28:26,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530265548] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:26,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910442157] [2021-11-07 07:28:26,396 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:28:26,396 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:28:26,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:28:26,397 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:28:26,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2021-11-07 07:28:31,441 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:28:31,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:28:31,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 107 conjunts are in the unsatisfiable core [2021-11-07 07:28:31,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:28:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 6734 backedges. 0 proven. 6734 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:32,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910442157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:32,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:28:32,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107] total 109 [2021-11-07 07:28:32,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485145703] [2021-11-07 07:28:32,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 110 states [2021-11-07 07:28:32,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:28:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-11-07 07:28:32,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3079, Invalid=8911, Unknown=0, NotChecked=0, Total=11990 [2021-11-07 07:28:32,339 INFO L87 Difference]: Start difference. First operand 269 states and 269 transitions. Second operand has 110 states, 109 states have (on average 2.467889908256881) internal successors, (269), 110 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 07:28:34,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:28:34,670 INFO L93 Difference]: Finished difference Result 274 states and 274 transitions. [2021-11-07 07:28:34,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-07 07:28:34,671 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 109 states have (on average 2.467889908256881) internal successors, (269), 110 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 265 [2021-11-07 07:28:34,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:28:34,672 INFO L225 Difference]: With dead ends: 274 [2021-11-07 07:28:34,672 INFO L226 Difference]: Without dead ends: 273 [2021-11-07 07:28:34,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 263 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4494 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7427, Invalid=18979, Unknown=0, NotChecked=0, Total=26406 [2021-11-07 07:28:34,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-11-07 07:28:34,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 272. [2021-11-07 07:28:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 270 states have (on average 1.0074074074074073) internal successors, (272), 271 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 07:28:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 272 transitions. [2021-11-07 07:28:34,678 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 272 transitions. Word has length 265 [2021-11-07 07:28:34,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:28:34,679 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 272 transitions. [2021-11-07 07:28:34,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 110 states, 109 states have (on average 2.467889908256881) internal successors, (269), 110 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 07:28:34,679 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 272 transitions. [2021-11-07 07:28:34,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-11-07 07:28:34,680 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:28:34,680 INFO L513 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 1, 1, 1, 1] [2021-11-07 07:28:34,721 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2021-11-07 07:28:34,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-11-07 07:28:34,881 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:28:34,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:28:34,881 INFO L85 PathProgramCache]: Analyzing trace with hash 296296871, now seen corresponding path program 52 times [2021-11-07 07:28:34,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:28:34,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928560659] [2021-11-07 07:28:34,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:28:34,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:28:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:28:36,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6838 backedges. 0 proven. 6838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:36,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:28:36,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928560659] [2021-11-07 07:28:36,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928560659] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:36,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790246858] [2021-11-07 07:28:36,171 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:28:36,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:28:36,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:28:36,172 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:28:36,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2021-11-07 07:28:41,322 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:28:41,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:28:41,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 07:28:41,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:28:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6838 backedges. 0 proven. 6838 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:42,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790246858] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:42,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:28:42,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 54 [2021-11-07 07:28:42,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861477463] [2021-11-07 07:28:42,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-07 07:28:42,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:28:42,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-07 07:28:42,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 07:28:42,105 INFO L87 Difference]: Start difference. First operand 272 states and 272 transitions. Second operand has 55 states, 54 states have (on average 4.944444444444445) internal successors, (267), 55 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 07:28:42,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:28:42,256 INFO L93 Difference]: Finished difference Result 276 states and 276 transitions. [2021-11-07 07:28:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-11-07 07:28:42,256 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 4.944444444444445) internal successors, (267), 55 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) Word has length 267 [2021-11-07 07:28:42,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:28:42,257 INFO L225 Difference]: With dead ends: 276 [2021-11-07 07:28:42,257 INFO L226 Difference]: Without dead ends: 275 [2021-11-07 07:28:42,257 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2021-11-07 07:28:42,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-07 07:28:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 274. [2021-11-07 07:28:42,261 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 07:28:42,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 274 transitions. [2021-11-07 07:28:42,261 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 274 transitions. Word has length 267 [2021-11-07 07:28:42,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:28:42,262 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 274 transitions. [2021-11-07 07:28:42,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 4.944444444444445) internal successors, (267), 55 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 07:28:42,262 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 274 transitions. [2021-11-07 07:28:42,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2021-11-07 07:28:42,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:28:42,263 INFO L513 BasicCegarLoop]: trace histogram [54, 53, 53, 53, 53, 1, 1, 1, 1] [2021-11-07 07:28:42,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2021-11-07 07:28:42,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable107 [2021-11-07 07:28:42,464 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:28:42,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:28:42,464 INFO L85 PathProgramCache]: Analyzing trace with hash 822344049, now seen corresponding path program 53 times [2021-11-07 07:28:42,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:28:42,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218571046] [2021-11-07 07:28:42,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:28:42,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:28:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:28:45,916 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:45,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:28:45,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218571046] [2021-11-07 07:28:45,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218571046] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:45,917 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844279382] [2021-11-07 07:28:45,917 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:28:45,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:28:45,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:28:45,918 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:28:45,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2021-11-07 07:28:51,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-07 07:28:51,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:28:51,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 109 conjunts are in the unsatisfiable core [2021-11-07 07:28:51,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:28:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6996 backedges. 0 proven. 6996 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:51,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844279382] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:51,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:28:51,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 109] total 111 [2021-11-07 07:28:51,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912782971] [2021-11-07 07:28:51,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 112 states [2021-11-07 07:28:51,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:28:51,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-11-07 07:28:51,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3191, Invalid=9241, Unknown=0, NotChecked=0, Total=12432 [2021-11-07 07:28:51,850 INFO L87 Difference]: Start difference. First operand 274 states and 274 transitions. Second operand has 112 states, 111 states have (on average 2.4684684684684686) internal successors, (274), 112 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 07:28:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:28:54,178 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2021-11-07 07:28:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-11-07 07:28:54,178 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 111 states have (on average 2.4684684684684686) internal successors, (274), 112 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) Word has length 270 [2021-11-07 07:28:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:28:54,179 INFO L225 Difference]: With dead ends: 279 [2021-11-07 07:28:54,179 INFO L226 Difference]: Without dead ends: 278 [2021-11-07 07:28:54,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4660 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=7702, Invalid=19688, Unknown=0, NotChecked=0, Total=27390 [2021-11-07 07:28:54,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-07 07:28:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 277. [2021-11-07 07:28:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 275 states have (on average 1.0072727272727273) internal successors, (277), 276 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:28:54,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 277 transitions. [2021-11-07 07:28:54,186 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 277 transitions. Word has length 270 [2021-11-07 07:28:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:28:54,186 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 277 transitions. [2021-11-07 07:28:54,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 112 states, 111 states have (on average 2.4684684684684686) internal successors, (274), 112 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 07:28:54,186 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 277 transitions. [2021-11-07 07:28:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2021-11-07 07:28:54,187 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:28:54,187 INFO L513 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 1, 1, 1, 1] [2021-11-07 07:28:54,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Ended with exit code 0 [2021-11-07 07:28:54,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:28:54,388 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:28:54,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:28:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1349773, now seen corresponding path program 53 times [2021-11-07 07:28:54,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:28:54,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918148209] [2021-11-07 07:28:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:28:54,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:28:54,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:28:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 0 proven. 7102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:28:55,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:28:55,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918148209] [2021-11-07 07:28:55,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918148209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:28:55,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835921067] [2021-11-07 07:28:55,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:28:55,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:28:55,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:28:55,779 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:28:55,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2021-11-07 07:29:00,995 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-11-07 07:29:00,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:29:00,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-07 07:29:01,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:29:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7102 backedges. 0 proven. 7102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:01,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835921067] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:01,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:29:01,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 55 [2021-11-07 07:29:01,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821598676] [2021-11-07 07:29:01,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-07 07:29:01,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:29:01,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-07 07:29:01,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 07:29:01,753 INFO L87 Difference]: Start difference. First operand 277 states and 277 transitions. Second operand has 56 states, 55 states have (on average 4.945454545454545) internal successors, (272), 56 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 07:29:01,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:29:01,901 INFO L93 Difference]: Finished difference Result 281 states and 281 transitions. [2021-11-07 07:29:01,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-07 07:29:01,901 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 4.945454545454545) internal successors, (272), 56 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 07:29:01,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:29:01,902 INFO L225 Difference]: With dead ends: 281 [2021-11-07 07:29:01,902 INFO L226 Difference]: Without dead ends: 280 [2021-11-07 07:29:01,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1540, Invalid=1540, Unknown=0, NotChecked=0, Total=3080 [2021-11-07 07:29:01,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-11-07 07:29:01,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 279. [2021-11-07 07:29:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 277 states have (on average 1.0072202166064983) internal successors, (279), 278 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 07:29:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 279 transitions. [2021-11-07 07:29:01,906 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 279 transitions. Word has length 272 [2021-11-07 07:29:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:29:01,906 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 279 transitions. [2021-11-07 07:29:01,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 4.945454545454545) internal successors, (272), 56 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 07:29:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 279 transitions. [2021-11-07 07:29:01,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2021-11-07 07:29:01,908 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:29:01,908 INFO L513 BasicCegarLoop]: trace histogram [55, 54, 54, 54, 54, 1, 1, 1, 1] [2021-11-07 07:29:01,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2021-11-07 07:29:02,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:29:02,108 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:29:02,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:29:02,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1556328411, now seen corresponding path program 54 times [2021-11-07 07:29:02,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:29:02,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246813485] [2021-11-07 07:29:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:29:02,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:29:02,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:29:05,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:05,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:29:05,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246813485] [2021-11-07 07:29:05,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246813485] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:05,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87577076] [2021-11-07 07:29:05,448 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:29:05,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:29:05,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:29:05,449 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:29:05,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2021-11-07 07:29:10,692 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-07 07:29:10,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:29:10,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 111 conjunts are in the unsatisfiable core [2021-11-07 07:29:10,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:29:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 7263 backedges. 0 proven. 7263 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:11,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87577076] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:11,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:29:11,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 111] total 113 [2021-11-07 07:29:11,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478030956] [2021-11-07 07:29:11,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2021-11-07 07:29:11,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:29:11,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-11-07 07:29:11,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3305, Invalid=9577, Unknown=0, NotChecked=0, Total=12882 [2021-11-07 07:29:11,522 INFO L87 Difference]: Start difference. First operand 279 states and 279 transitions. Second operand has 114 states, 113 states have (on average 2.4690265486725664) internal successors, (279), 114 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 07:29:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:29:13,800 INFO L93 Difference]: Finished difference Result 284 states and 284 transitions. [2021-11-07 07:29:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-11-07 07:29:13,801 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 113 states have (on average 2.4690265486725664) internal successors, (279), 114 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 275 [2021-11-07 07:29:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:29:13,802 INFO L225 Difference]: With dead ends: 284 [2021-11-07 07:29:13,802 INFO L226 Difference]: Without dead ends: 283 [2021-11-07 07:29:13,804 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4829 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=7982, Invalid=20410, Unknown=0, NotChecked=0, Total=28392 [2021-11-07 07:29:13,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-11-07 07:29:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 282. [2021-11-07 07:29:13,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 280 states have (on average 1.0071428571428571) internal successors, (282), 281 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:13,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 282 transitions. [2021-11-07 07:29:13,808 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 282 transitions. Word has length 275 [2021-11-07 07:29:13,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:29:13,808 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 282 transitions. [2021-11-07 07:29:13,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 113 states have (on average 2.4690265486725664) internal successors, (279), 114 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 07:29:13,808 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 282 transitions. [2021-11-07 07:29:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-11-07 07:29:13,809 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:29:13,809 INFO L513 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 1, 1, 1, 1] [2021-11-07 07:29:13,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Ended with exit code 0 [2021-11-07 07:29:14,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:29:14,010 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:29:14,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:29:14,010 INFO L85 PathProgramCache]: Analyzing trace with hash -982982361, now seen corresponding path program 54 times [2021-11-07 07:29:14,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:29:14,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713517292] [2021-11-07 07:29:14,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:29:14,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:29:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:29:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7371 backedges. 0 proven. 7371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:15,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:29:15,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713517292] [2021-11-07 07:29:15,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713517292] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:15,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232903562] [2021-11-07 07:29:15,249 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:29:15,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:29:15,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:29:15,251 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:29:15,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2021-11-07 07:29:20,329 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-11-07 07:29:20,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:29:20,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 56 conjunts are in the unsatisfiable core [2021-11-07 07:29:20,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:29:21,036 INFO L134 CoverageAnalysis]: Checked inductivity of 7371 backedges. 0 proven. 7371 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:21,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232903562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:21,036 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:29:21,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 56 [2021-11-07 07:29:21,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637253218] [2021-11-07 07:29:21,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-07 07:29:21,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:29:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-07 07:29:21,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2021-11-07 07:29:21,038 INFO L87 Difference]: Start difference. First operand 282 states and 282 transitions. Second operand has 57 states, 56 states have (on average 4.946428571428571) internal successors, (277), 57 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:21,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:29:21,177 INFO L93 Difference]: Finished difference Result 286 states and 286 transitions. [2021-11-07 07:29:21,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-11-07 07:29:21,177 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 4.946428571428571) internal successors, (277), 57 states have internal predecessors, (277), 0 states have call successors, (0), 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 277 [2021-11-07 07:29:21,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:29:21,178 INFO L225 Difference]: With dead ends: 286 [2021-11-07 07:29:21,178 INFO L226 Difference]: Without dead ends: 285 [2021-11-07 07:29:21,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 277 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 07:29:21,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-11-07 07:29:21,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 284. [2021-11-07 07:29:21,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 1.0070921985815602) internal successors, (284), 283 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:21,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2021-11-07 07:29:21,182 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 277 [2021-11-07 07:29:21,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:29:21,182 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2021-11-07 07:29:21,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 4.946428571428571) internal successors, (277), 57 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2021-11-07 07:29:21,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-11-07 07:29:21,183 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:29:21,183 INFO L513 BasicCegarLoop]: trace histogram [56, 55, 55, 55, 55, 1, 1, 1, 1] [2021-11-07 07:29:21,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2021-11-07 07:29:21,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111,110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:29:21,384 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:29:21,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:29:21,384 INFO L85 PathProgramCache]: Analyzing trace with hash -940439055, now seen corresponding path program 55 times [2021-11-07 07:29:21,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:29:21,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019035403] [2021-11-07 07:29:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:29:21,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:29:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:29:24,957 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:24,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:29:24,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019035403] [2021-11-07 07:29:24,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019035403] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:24,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78722107] [2021-11-07 07:29:24,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:29:24,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:29:24,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:29:24,959 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:29:24,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2021-11-07 07:29:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:29:29,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 113 conjunts are in the unsatisfiable core [2021-11-07 07:29:29,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:29:30,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7535 backedges. 0 proven. 7535 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:30,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78722107] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:30,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:29:30,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 113] total 115 [2021-11-07 07:29:30,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093222199] [2021-11-07 07:29:30,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2021-11-07 07:29:30,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:29:30,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-11-07 07:29:30,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3421, Invalid=9919, Unknown=0, NotChecked=0, Total=13340 [2021-11-07 07:29:30,649 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand has 116 states, 115 states have (on average 2.4695652173913043) internal successors, (284), 116 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:32,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:29:32,937 INFO L93 Difference]: Finished difference Result 289 states and 289 transitions. [2021-11-07 07:29:32,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-11-07 07:29:32,938 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 2.4695652173913043) internal successors, (284), 116 states have internal predecessors, (284), 0 states have call successors, (0), 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 280 [2021-11-07 07:29:32,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:29:32,938 INFO L225 Difference]: With dead ends: 289 [2021-11-07 07:29:32,938 INFO L226 Difference]: Without dead ends: 288 [2021-11-07 07:29:32,940 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5001 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8267, Invalid=21145, Unknown=0, NotChecked=0, Total=29412 [2021-11-07 07:29:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-11-07 07:29:32,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 287. [2021-11-07 07:29:32,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 285 states have (on average 1.0070175438596491) internal successors, (287), 286 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:32,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 287 transitions. [2021-11-07 07:29:32,943 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 287 transitions. Word has length 280 [2021-11-07 07:29:32,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:29:32,944 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 287 transitions. [2021-11-07 07:29:32,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 2.4695652173913043) internal successors, (284), 116 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:32,944 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 287 transitions. [2021-11-07 07:29:32,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-11-07 07:29:32,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:29:32,945 INFO L513 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 1, 1, 1, 1] [2021-11-07 07:29:32,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Forceful destruction successful, exit code 0 [2021-11-07 07:29:33,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable112 [2021-11-07 07:29:33,149 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:29:33,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:29:33,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1818798093, now seen corresponding path program 55 times [2021-11-07 07:29:33,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:29:33,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69465786] [2021-11-07 07:29:33,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:29:33,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:29:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:29:34,335 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 0 proven. 7645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:34,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:29:34,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69465786] [2021-11-07 07:29:34,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69465786] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:34,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726987466] [2021-11-07 07:29:34,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:29:34,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:29:34,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:29:34,336 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:29:34,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2021-11-07 07:29:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:29:39,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-07 07:29:39,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:29:40,182 INFO L134 CoverageAnalysis]: Checked inductivity of 7645 backedges. 0 proven. 7645 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:40,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726987466] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:40,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:29:40,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 57 [2021-11-07 07:29:40,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438818647] [2021-11-07 07:29:40,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2021-11-07 07:29:40,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:29:40,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-11-07 07:29:40,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1653, Invalid=1653, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 07:29:40,184 INFO L87 Difference]: Start difference. First operand 287 states and 287 transitions. Second operand has 58 states, 57 states have (on average 4.947368421052632) internal successors, (282), 58 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:29:40,329 INFO L93 Difference]: Finished difference Result 291 states and 291 transitions. [2021-11-07 07:29:40,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-07 07:29:40,329 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 4.947368421052632) internal successors, (282), 58 states have internal predecessors, (282), 0 states have call successors, (0), 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 282 [2021-11-07 07:29:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:29:40,330 INFO L225 Difference]: With dead ends: 291 [2021-11-07 07:29:40,330 INFO L226 Difference]: Without dead ends: 290 [2021-11-07 07:29:40,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 282 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 07:29:40,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-07 07:29:40,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 289. [2021-11-07 07:29:40,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 287 states have (on average 1.0069686411149825) internal successors, (289), 288 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:40,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 289 transitions. [2021-11-07 07:29:40,334 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 289 transitions. Word has length 282 [2021-11-07 07:29:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:29:40,335 INFO L470 AbstractCegarLoop]: Abstraction has 289 states and 289 transitions. [2021-11-07 07:29:40,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 4.947368421052632) internal successors, (282), 58 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:40,335 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 289 transitions. [2021-11-07 07:29:40,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-07 07:29:40,336 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:29:40,336 INFO L513 BasicCegarLoop]: trace histogram [57, 56, 56, 56, 56, 1, 1, 1, 1] [2021-11-07 07:29:40,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2021-11-07 07:29:40,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2021-11-07 07:29:40,537 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:29:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:29:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1493471141, now seen corresponding path program 56 times [2021-11-07 07:29:40,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:29:40,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057932095] [2021-11-07 07:29:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:29:40,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:29:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:29:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:44,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:29:44,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057932095] [2021-11-07 07:29:44,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057932095] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:44,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816876271] [2021-11-07 07:29:44,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:29:44,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:29:44,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:29:44,129 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:29:44,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2021-11-07 07:29:49,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:29:49,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:29:49,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 115 conjunts are in the unsatisfiable core [2021-11-07 07:29:49,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:29:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7812 backedges. 0 proven. 7812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:50,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816876271] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:50,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:29:50,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [115, 115] total 117 [2021-11-07 07:29:50,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119688249] [2021-11-07 07:29:50,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 118 states [2021-11-07 07:29:50,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:29:50,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-11-07 07:29:50,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3539, Invalid=10267, Unknown=0, NotChecked=0, Total=13806 [2021-11-07 07:29:50,144 INFO L87 Difference]: Start difference. First operand 289 states and 289 transitions. Second operand has 118 states, 117 states have (on average 2.47008547008547) internal successors, (289), 118 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:52,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:29:52,496 INFO L93 Difference]: Finished difference Result 294 states and 294 transitions. [2021-11-07 07:29:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-11-07 07:29:52,497 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 117 states have (on average 2.47008547008547) internal successors, (289), 118 states have internal predecessors, (289), 0 states have call successors, (0), 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 285 [2021-11-07 07:29:52,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:29:52,497 INFO L225 Difference]: With dead ends: 294 [2021-11-07 07:29:52,497 INFO L226 Difference]: Without dead ends: 293 [2021-11-07 07:29:52,499 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5176 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8557, Invalid=21893, Unknown=0, NotChecked=0, Total=30450 [2021-11-07 07:29:52,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-11-07 07:29:52,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 292. [2021-11-07 07:29:52,502 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 07:29:52,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 292 transitions. [2021-11-07 07:29:52,503 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 292 transitions. Word has length 285 [2021-11-07 07:29:52,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:29:52,504 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 292 transitions. [2021-11-07 07:29:52,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 118 states, 117 states have (on average 2.47008547008547) internal successors, (289), 118 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:29:52,504 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 292 transitions. [2021-11-07 07:29:52,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-11-07 07:29:52,505 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:29:52,505 INFO L513 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 1, 1, 1, 1] [2021-11-07 07:29:52,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Forceful destruction successful, exit code 0 [2021-11-07 07:29:52,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable114 [2021-11-07 07:29:52,706 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:29:52,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:29:52,706 INFO L85 PathProgramCache]: Analyzing trace with hash 706691239, now seen corresponding path program 56 times [2021-11-07 07:29:52,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:29:52,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130224834] [2021-11-07 07:29:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:29:52,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:29:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:29:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7924 backedges. 0 proven. 7924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:29:53,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:29:53,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130224834] [2021-11-07 07:29:53,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130224834] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:29:53,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289727282] [2021-11-07 07:29:53,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:29:53,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:29:53,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:29:53,999 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:29:53,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2021-11-07 07:29:59,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:29:59,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:29:59,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 58 conjunts are in the unsatisfiable core [2021-11-07 07:29:59,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 7924 backedges. 0 proven. 7924 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:00,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289727282] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:00,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:30:00,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 58 [2021-11-07 07:30:00,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427647566] [2021-11-07 07:30:00,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-07 07:30:00,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:30:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-07 07:30:00,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 07:30:00,110 INFO L87 Difference]: Start difference. First operand 292 states and 292 transitions. Second operand has 59 states, 58 states have (on average 4.948275862068965) internal successors, (287), 59 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:30:00,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:00,243 INFO L93 Difference]: Finished difference Result 296 states and 296 transitions. [2021-11-07 07:30:00,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-07 07:30:00,244 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 4.948275862068965) internal successors, (287), 59 states have internal predecessors, (287), 0 states have call successors, (0), 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 287 [2021-11-07 07:30:00,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:00,244 INFO L225 Difference]: With dead ends: 296 [2021-11-07 07:30:00,244 INFO L226 Difference]: Without dead ends: 295 [2021-11-07 07:30:00,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2021-11-07 07:30:00,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2021-11-07 07:30:00,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 294. [2021-11-07 07:30:00,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 292 states have (on average 1.0068493150684932) internal successors, (294), 293 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:30:00,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 294 transitions. [2021-11-07 07:30:00,248 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 294 transitions. Word has length 287 [2021-11-07 07:30:00,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:00,248 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 294 transitions. [2021-11-07 07:30:00,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 4.948275862068965) internal successors, (287), 59 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:30:00,248 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 294 transitions. [2021-11-07 07:30:00,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-11-07 07:30:00,249 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:00,249 INFO L513 BasicCegarLoop]: trace histogram [58, 57, 57, 57, 57, 1, 1, 1, 1] [2021-11-07 07:30:00,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:00,450 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable115 [2021-11-07 07:30:00,450 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:30:00,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:00,450 INFO L85 PathProgramCache]: Analyzing trace with hash -890930575, now seen corresponding path program 57 times [2021-11-07 07:30:00,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:30:00,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459457124] [2021-11-07 07:30:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:00,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:30:00,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:03,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:03,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:30:03,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459457124] [2021-11-07 07:30:03,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459457124] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:03,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638066414] [2021-11-07 07:30:03,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:30:03,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:30:03,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:30:03,976 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:30:03,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2021-11-07 07:30:09,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-07 07:30:09,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:30:09,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 672 conjuncts, 117 conjunts are in the unsatisfiable core [2021-11-07 07:30:09,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 8094 backedges. 0 proven. 8094 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:10,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638066414] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:10,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:30:10,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [117, 117] total 119 [2021-11-07 07:30:10,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514123139] [2021-11-07 07:30:10,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 120 states [2021-11-07 07:30:10,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:30:10,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants. [2021-11-07 07:30:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3659, Invalid=10621, Unknown=0, NotChecked=0, Total=14280 [2021-11-07 07:30:10,729 INFO L87 Difference]: Start difference. First operand 294 states and 294 transitions. Second operand has 120 states, 119 states have (on average 2.4705882352941178) internal successors, (294), 120 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:30:13,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:13,025 INFO L93 Difference]: Finished difference Result 299 states and 299 transitions. [2021-11-07 07:30:13,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2021-11-07 07:30:13,026 INFO L78 Accepts]: Start accepts. Automaton has has 120 states, 119 states have (on average 2.4705882352941178) internal successors, (294), 120 states have internal predecessors, (294), 0 states have call successors, (0), 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 07:30:13,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:13,027 INFO L225 Difference]: With dead ends: 299 [2021-11-07 07:30:13,027 INFO L226 Difference]: Without dead ends: 298 [2021-11-07 07:30:13,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5354 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=8852, Invalid=22654, Unknown=0, NotChecked=0, Total=31506 [2021-11-07 07:30:13,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-07 07:30:13,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 297. [2021-11-07 07:30:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 295 states have (on average 1.006779661016949) internal successors, (297), 296 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 07:30:13,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 297 transitions. [2021-11-07 07:30:13,032 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 297 transitions. Word has length 290 [2021-11-07 07:30:13,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:13,032 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 297 transitions. [2021-11-07 07:30:13,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 120 states, 119 states have (on average 2.4705882352941178) internal successors, (294), 120 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:30:13,033 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 297 transitions. [2021-11-07 07:30:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-07 07:30:13,033 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:13,034 INFO L513 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 1, 1, 1, 1] [2021-11-07 07:30:13,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2021-11-07 07:30:13,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116,115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:30:13,234 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:30:13,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:13,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1485789069, now seen corresponding path program 57 times [2021-11-07 07:30:13,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:30:13,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759441056] [2021-11-07 07:30:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:13,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:30:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:14,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:14,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:30:14,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759441056] [2021-11-07 07:30:14,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759441056] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:14,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006588496] [2021-11-07 07:30:14,504 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:30:14,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:30:14,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:30:14,505 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:30:14,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2021-11-07 07:30:19,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-11-07 07:30:19,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:30:19,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 676 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-07 07:30:19,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8208 backedges. 0 proven. 8208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:20,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006588496] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:20,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:30:20,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 59 [2021-11-07 07:30:20,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781626419] [2021-11-07 07:30:20,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2021-11-07 07:30:20,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:30:20,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-11-07 07:30:20,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1770, Invalid=1770, Unknown=0, NotChecked=0, Total=3540 [2021-11-07 07:30:20,576 INFO L87 Difference]: Start difference. First operand 297 states and 297 transitions. Second operand has 60 states, 59 states have (on average 4.9491525423728815) internal successors, (292), 60 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 07:30:20,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:20,720 INFO L93 Difference]: Finished difference Result 301 states and 301 transitions. [2021-11-07 07:30:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-07 07:30:20,720 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 4.9491525423728815) internal successors, (292), 60 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) Word has length 292 [2021-11-07 07:30:20,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:20,721 INFO L225 Difference]: With dead ends: 301 [2021-11-07 07:30:20,721 INFO L226 Difference]: Without dead ends: 300 [2021-11-07 07:30:20,722 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 292 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 07:30:20,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2021-11-07 07:30:20,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 299. [2021-11-07 07:30:20,725 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 07:30:20,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 299 transitions. [2021-11-07 07:30:20,725 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 299 transitions. Word has length 292 [2021-11-07 07:30:20,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:20,726 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 299 transitions. [2021-11-07 07:30:20,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 4.9491525423728815) internal successors, (292), 60 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 07:30:20,726 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 299 transitions. [2021-11-07 07:30:20,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2021-11-07 07:30:20,727 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:20,727 INFO L513 BasicCegarLoop]: trace histogram [59, 58, 58, 58, 58, 1, 1, 1, 1] [2021-11-07 07:30:20,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:20,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117,116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:30:20,929 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:30:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:20,929 INFO L85 PathProgramCache]: Analyzing trace with hash 790851365, now seen corresponding path program 58 times [2021-11-07 07:30:20,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:30:20,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620018540] [2021-11-07 07:30:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:20,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:30:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:25,077 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:25,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:30:25,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620018540] [2021-11-07 07:30:25,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620018540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:25,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162802090] [2021-11-07 07:30:25,077 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:30:25,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:30:25,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:30:25,078 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:30:25,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2021-11-07 07:30:30,829 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:30:30,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:30:30,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 683 conjuncts, 119 conjunts are in the unsatisfiable core [2021-11-07 07:30:30,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 8381 backedges. 0 proven. 8381 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:31,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162802090] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:31,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:30:31,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [119, 119] total 121 [2021-11-07 07:30:31,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968975314] [2021-11-07 07:30:31,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 122 states [2021-11-07 07:30:31,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:30:31,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2021-11-07 07:30:31,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3781, Invalid=10981, Unknown=0, NotChecked=0, Total=14762 [2021-11-07 07:30:31,591 INFO L87 Difference]: Start difference. First operand 299 states and 299 transitions. Second operand has 122 states, 121 states have (on average 2.4710743801652892) internal successors, (299), 122 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 07:30:34,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:34,236 INFO L93 Difference]: Finished difference Result 304 states and 304 transitions. [2021-11-07 07:30:34,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-11-07 07:30:34,236 INFO L78 Accepts]: Start accepts. Automaton has has 122 states, 121 states have (on average 2.4710743801652892) internal successors, (299), 122 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) Word has length 295 [2021-11-07 07:30:34,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:34,237 INFO L225 Difference]: With dead ends: 304 [2021-11-07 07:30:34,237 INFO L226 Difference]: Without dead ends: 303 [2021-11-07 07:30:34,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 472 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5535 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9152, Invalid=23428, Unknown=0, NotChecked=0, Total=32580 [2021-11-07 07:30:34,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-11-07 07:30:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 302. [2021-11-07 07:30:34,243 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 07:30:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2021-11-07 07:30:34,244 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 295 [2021-11-07 07:30:34,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:34,245 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2021-11-07 07:30:34,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 122 states, 121 states have (on average 2.4710743801652892) internal successors, (299), 122 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 07:30:34,245 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2021-11-07 07:30:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2021-11-07 07:30:34,246 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:34,247 INFO L513 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 1, 1, 1, 1] [2021-11-07 07:30:34,290 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:34,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable118 [2021-11-07 07:30:34,447 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:30:34,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:34,448 INFO L85 PathProgramCache]: Analyzing trace with hash -201048025, now seen corresponding path program 58 times [2021-11-07 07:30:34,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:30:34,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991426769] [2021-11-07 07:30:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:34,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:30:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:35,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8497 backedges. 0 proven. 8497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:35,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:30:35,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991426769] [2021-11-07 07:30:35,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991426769] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:35,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007210577] [2021-11-07 07:30:35,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:30:35,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:30:35,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:30:35,881 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:30:35,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2021-11-07 07:30:41,743 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:30:41,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:30:41,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 60 conjunts are in the unsatisfiable core [2021-11-07 07:30:41,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8497 backedges. 0 proven. 8497 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:42,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007210577] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:42,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:30:42,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 60 [2021-11-07 07:30:42,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944094392] [2021-11-07 07:30:42,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-11-07 07:30:42,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:30:42,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-11-07 07:30:42,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 07:30:42,702 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand has 61 states, 60 states have (on average 4.95) internal successors, (297), 61 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 07:30:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:42,862 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2021-11-07 07:30:42,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-07 07:30:42,862 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 4.95) internal successors, (297), 61 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 07:30:42,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:42,863 INFO L225 Difference]: With dead ends: 306 [2021-11-07 07:30:42,863 INFO L226 Difference]: Without dead ends: 305 [2021-11-07 07:30:42,864 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2021-11-07 07:30:42,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-11-07 07:30:42,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2021-11-07 07:30:42,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 302 states have (on average 1.0066225165562914) internal successors, (304), 303 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 07:30:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 304 transitions. [2021-11-07 07:30:42,868 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 304 transitions. Word has length 297 [2021-11-07 07:30:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:42,868 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 304 transitions. [2021-11-07 07:30:42,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 4.95) internal successors, (297), 61 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 07:30:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 304 transitions. [2021-11-07 07:30:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2021-11-07 07:30:42,869 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:42,869 INFO L513 BasicCegarLoop]: trace histogram [60, 59, 59, 59, 59, 1, 1, 1, 1] [2021-11-07 07:30:42,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:43,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119,118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:30:43,070 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:30:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash 2057718513, now seen corresponding path program 59 times [2021-11-07 07:30:43,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:30:43,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377713358] [2021-11-07 07:30:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:43,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:30:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8673 backedges. 0 proven. 8673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:47,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:30:47,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377713358] [2021-11-07 07:30:47,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377713358] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:47,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413420486] [2021-11-07 07:30:47,286 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:30:47,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:30:47,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:30:47,287 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:30:47,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2021-11-07 07:30:53,426 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-11-07 07:30:53,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:30:53,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 121 conjunts are in the unsatisfiable core [2021-11-07 07:30:53,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:30:54,383 INFO L134 CoverageAnalysis]: Checked inductivity of 8673 backedges. 0 proven. 8673 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:54,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413420486] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:54,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:30:54,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [121, 121] total 123 [2021-11-07 07:30:54,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251117384] [2021-11-07 07:30:54,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2021-11-07 07:30:54,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:30:54,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2021-11-07 07:30:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3905, Invalid=11347, Unknown=0, NotChecked=0, Total=15252 [2021-11-07 07:30:54,387 INFO L87 Difference]: Start difference. First operand 304 states and 304 transitions. Second operand has 124 states, 123 states have (on average 2.4715447154471546) internal successors, (304), 124 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 07:30:57,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:30:57,208 INFO L93 Difference]: Finished difference Result 309 states and 309 transitions. [2021-11-07 07:30:57,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2021-11-07 07:30:57,208 INFO L78 Accepts]: Start accepts. Automaton has has 124 states, 123 states have (on average 2.4715447154471546) internal successors, (304), 124 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 300 [2021-11-07 07:30:57,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:30:57,209 INFO L225 Difference]: With dead ends: 309 [2021-11-07 07:30:57,209 INFO L226 Difference]: Without dead ends: 308 [2021-11-07 07:30:57,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5719 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=9457, Invalid=24215, Unknown=0, NotChecked=0, Total=33672 [2021-11-07 07:30:57,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-07 07:30:57,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 307. [2021-11-07 07:30:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 305 states have (on average 1.0065573770491802) internal successors, (307), 306 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 07:30:57,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 307 transitions. [2021-11-07 07:30:57,215 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 307 transitions. Word has length 300 [2021-11-07 07:30:57,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:30:57,216 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 307 transitions. [2021-11-07 07:30:57,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 124 states, 123 states have (on average 2.4715447154471546) internal successors, (304), 124 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 07:30:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 307 transitions. [2021-11-07 07:30:57,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2021-11-07 07:30:57,217 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:30:57,217 INFO L513 BasicCegarLoop]: trace histogram [60, 60, 60, 59, 59, 1, 1, 1, 1] [2021-11-07 07:30:57,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Forceful destruction successful, exit code 0 [2021-11-07 07:30:57,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:30:57,418 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:30:57,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:30:57,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1782536435, now seen corresponding path program 59 times [2021-11-07 07:30:57,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:30:57,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374424129] [2021-11-07 07:30:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:30:57,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:30:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:30:59,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8791 backedges. 0 proven. 8791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:30:59,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:30:59,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374424129] [2021-11-07 07:30:59,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374424129] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:30:59,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271013715] [2021-11-07 07:30:59,060 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:30:59,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:30:59,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:30:59,061 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:30:59,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2021-11-07 07:31:05,212 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-11-07 07:31:05,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:05,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-07 07:31:05,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:05,925 INFO L134 CoverageAnalysis]: Checked inductivity of 8791 backedges. 0 proven. 8791 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:05,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271013715] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:05,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:05,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2021-11-07 07:31:05,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416989673] [2021-11-07 07:31:05,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2021-11-07 07:31:05,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:05,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-11-07 07:31:05,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=1891, Unknown=0, NotChecked=0, Total=3782 [2021-11-07 07:31:05,927 INFO L87 Difference]: Start difference. First operand 307 states and 307 transitions. Second operand has 62 states, 61 states have (on average 4.950819672131147) internal successors, (302), 62 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 07:31:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:06,071 INFO L93 Difference]: Finished difference Result 311 states and 311 transitions. [2021-11-07 07:31:06,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-07 07:31:06,071 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 4.950819672131147) internal successors, (302), 62 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) Word has length 302 [2021-11-07 07:31:06,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:06,072 INFO L225 Difference]: With dead ends: 311 [2021-11-07 07:31:06,072 INFO L226 Difference]: Without dead ends: 310 [2021-11-07 07:31:06,073 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 302 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 07:31:06,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-07 07:31:06,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 309. [2021-11-07 07:31:06,076 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 07:31:06,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 309 transitions. [2021-11-07 07:31:06,076 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 309 transitions. Word has length 302 [2021-11-07 07:31:06,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:06,076 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 309 transitions. [2021-11-07 07:31:06,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 4.950819672131147) internal successors, (302), 62 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 07:31:06,077 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 309 transitions. [2021-11-07 07:31:06,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-07 07:31:06,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:06,078 INFO L513 BasicCegarLoop]: trace histogram [61, 60, 60, 60, 60, 1, 1, 1, 1] [2021-11-07 07:31:06,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2021-11-07 07:31:06,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable121 [2021-11-07 07:31:06,278 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:31:06,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:06,278 INFO L85 PathProgramCache]: Analyzing trace with hash 567340709, now seen corresponding path program 60 times [2021-11-07 07:31:06,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:06,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611852137] [2021-11-07 07:31:06,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:06,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:10,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:10,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611852137] [2021-11-07 07:31:10,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611852137] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:10,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261606316] [2021-11-07 07:31:10,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:31:10,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:10,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:10,252 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:10,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2021-11-07 07:31:16,562 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-11-07 07:31:16,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:16,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 123 conjunts are in the unsatisfiable core [2021-11-07 07:31:16,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8970 backedges. 0 proven. 8970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:17,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261606316] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:17,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:17,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [123, 123] total 125 [2021-11-07 07:31:17,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202817348] [2021-11-07 07:31:17,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2021-11-07 07:31:17,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:17,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2021-11-07 07:31:17,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4031, Invalid=11719, Unknown=0, NotChecked=0, Total=15750 [2021-11-07 07:31:17,381 INFO L87 Difference]: Start difference. First operand 309 states and 309 transitions. Second operand has 126 states, 125 states have (on average 2.472) internal successors, (309), 126 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 07:31:19,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:19,844 INFO L93 Difference]: Finished difference Result 314 states and 314 transitions. [2021-11-07 07:31:19,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-11-07 07:31:19,845 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 2.472) internal successors, (309), 126 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) Word has length 305 [2021-11-07 07:31:19,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:19,846 INFO L225 Difference]: With dead ends: 314 [2021-11-07 07:31:19,846 INFO L226 Difference]: Without dead ends: 313 [2021-11-07 07:31:19,848 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 185 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5906 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9767, Invalid=25015, Unknown=0, NotChecked=0, Total=34782 [2021-11-07 07:31:19,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-11-07 07:31:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 312. [2021-11-07 07:31:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 310 states have (on average 1.0064516129032257) internal successors, (312), 311 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:19,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 312 transitions. [2021-11-07 07:31:19,852 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 312 transitions. Word has length 305 [2021-11-07 07:31:19,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:19,853 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 312 transitions. [2021-11-07 07:31:19,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 2.472) internal successors, (309), 126 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 07:31:19,853 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 312 transitions. [2021-11-07 07:31:19,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-07 07:31:19,854 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:19,854 INFO L513 BasicCegarLoop]: trace histogram [61, 61, 61, 60, 60, 1, 1, 1, 1] [2021-11-07 07:31:19,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:20,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-11-07 07:31:20,055 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:31:20,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:20,055 INFO L85 PathProgramCache]: Analyzing trace with hash -246423641, now seen corresponding path program 60 times [2021-11-07 07:31:20,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:20,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798270995] [2021-11-07 07:31:20,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:20,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 9090 backedges. 0 proven. 9090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:21,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:21,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798270995] [2021-11-07 07:31:21,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798270995] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:21,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059762868] [2021-11-07 07:31:21,706 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 07:31:21,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:21,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:21,707 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:21,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2021-11-07 07:31:28,512 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-11-07 07:31:28,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:31:28,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-07 07:31:28,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 9090 backedges. 0 proven. 9090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:29,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059762868] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:29,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:29,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 62 [2021-11-07 07:31:29,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049426519] [2021-11-07 07:31:29,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-07 07:31:29,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:29,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-07 07:31:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-11-07 07:31:29,385 INFO L87 Difference]: Start difference. First operand 312 states and 312 transitions. Second operand has 63 states, 62 states have (on average 4.951612903225806) internal successors, (307), 63 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 07:31:29,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:29,542 INFO L93 Difference]: Finished difference Result 316 states and 316 transitions. [2021-11-07 07:31:29,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-07 07:31:29,542 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 4.951612903225806) internal successors, (307), 63 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 07:31:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:29,543 INFO L225 Difference]: With dead ends: 316 [2021-11-07 07:31:29,543 INFO L226 Difference]: Without dead ends: 315 [2021-11-07 07:31:29,543 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 307 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2021-11-07 07:31:29,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-11-07 07:31:29,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 314. [2021-11-07 07:31:29,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 312 states have (on average 1.0064102564102564) internal successors, (314), 313 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 07:31:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 314 transitions. [2021-11-07 07:31:29,547 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 314 transitions. Word has length 307 [2021-11-07 07:31:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:29,548 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 314 transitions. [2021-11-07 07:31:29,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 4.951612903225806) internal successors, (307), 63 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 07:31:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 314 transitions. [2021-11-07 07:31:29,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2021-11-07 07:31:29,549 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:29,549 INFO L513 BasicCegarLoop]: trace histogram [62, 61, 61, 61, 61, 1, 1, 1, 1] [2021-11-07 07:31:29,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:29,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2021-11-07 07:31:29,750 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:31:29,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:29,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1107526799, now seen corresponding path program 61 times [2021-11-07 07:31:29,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:29,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963314765] [2021-11-07 07:31:29,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:29,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 9272 backedges. 0 proven. 9272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:34,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:34,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963314765] [2021-11-07 07:31:34,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963314765] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:34,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205642945] [2021-11-07 07:31:34,591 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:31:34,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:34,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:34,592 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:34,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2021-11-07 07:31:41,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:41,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 716 conjuncts, 125 conjunts are in the unsatisfiable core [2021-11-07 07:31:41,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:41,960 INFO L134 CoverageAnalysis]: Checked inductivity of 9272 backedges. 0 proven. 9272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:41,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205642945] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:41,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:41,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [125, 125] total 127 [2021-11-07 07:31:41,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563289063] [2021-11-07 07:31:41,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 128 states [2021-11-07 07:31:41,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:41,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants. [2021-11-07 07:31:41,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4159, Invalid=12097, Unknown=0, NotChecked=0, Total=16256 [2021-11-07 07:31:41,964 INFO L87 Difference]: Start difference. First operand 314 states and 314 transitions. Second operand has 128 states, 127 states have (on average 2.47244094488189) internal successors, (314), 128 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 07:31:44,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:44,867 INFO L93 Difference]: Finished difference Result 319 states and 319 transitions. [2021-11-07 07:31:44,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-11-07 07:31:44,867 INFO L78 Accepts]: Start accepts. Automaton has has 128 states, 127 states have (on average 2.47244094488189) internal successors, (314), 128 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 310 [2021-11-07 07:31:44,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:44,868 INFO L225 Difference]: With dead ends: 319 [2021-11-07 07:31:44,868 INFO L226 Difference]: Without dead ends: 318 [2021-11-07 07:31:44,871 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6096 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=10082, Invalid=25828, Unknown=0, NotChecked=0, Total=35910 [2021-11-07 07:31:44,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-07 07:31:44,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2021-11-07 07:31:44,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 315 states have (on average 1.0063492063492063) internal successors, (317), 316 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:44,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 317 transitions. [2021-11-07 07:31:44,875 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 317 transitions. Word has length 310 [2021-11-07 07:31:44,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:44,876 INFO L470 AbstractCegarLoop]: Abstraction has 317 states and 317 transitions. [2021-11-07 07:31:44,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 128 states, 127 states have (on average 2.47244094488189) internal successors, (314), 128 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 07:31:44,876 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 317 transitions. [2021-11-07 07:31:44,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2021-11-07 07:31:44,877 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:44,877 INFO L513 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 1, 1, 1, 1] [2021-11-07 07:31:44,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2021-11-07 07:31:45,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable124 [2021-11-07 07:31:45,078 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:31:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:45,078 INFO L85 PathProgramCache]: Analyzing trace with hash 818637171, now seen corresponding path program 61 times [2021-11-07 07:31:45,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:45,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761040908] [2021-11-07 07:31:45,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:45,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9394 backedges. 0 proven. 9394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:46,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:46,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761040908] [2021-11-07 07:31:46,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761040908] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:46,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986107992] [2021-11-07 07:31:46,685 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-07 07:31:46,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:46,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:46,686 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:46,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2021-11-07 07:31:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:53,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-07 07:31:53,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:31:54,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9394 backedges. 0 proven. 9394 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:54,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [986107992] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:54,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:31:54,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 63 [2021-11-07 07:31:54,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943929230] [2021-11-07 07:31:54,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 07:31:54,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:31:54,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 07:31:54,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 07:31:54,616 INFO L87 Difference]: Start difference. First operand 317 states and 317 transitions. Second operand has 64 states, 63 states have (on average 4.9523809523809526) internal successors, (312), 64 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:31:54,747 INFO L93 Difference]: Finished difference Result 321 states and 321 transitions. [2021-11-07 07:31:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 07:31:54,747 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 4.9523809523809526) internal successors, (312), 64 states have internal predecessors, (312), 0 states have call successors, (0), 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 312 [2021-11-07 07:31:54,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:31:54,748 INFO L225 Difference]: With dead ends: 321 [2021-11-07 07:31:54,748 INFO L226 Difference]: Without dead ends: 320 [2021-11-07 07:31:54,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 312 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 07:31:54,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-11-07 07:31:54,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 319. [2021-11-07 07:31:54,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 317 states have (on average 1.0063091482649842) internal successors, (319), 318 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 319 transitions. [2021-11-07 07:31:54,752 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 319 transitions. Word has length 312 [2021-11-07 07:31:54,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:31:54,752 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 319 transitions. [2021-11-07 07:31:54,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 4.9523809523809526) internal successors, (312), 64 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:31:54,752 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 319 transitions. [2021-11-07 07:31:54,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2021-11-07 07:31:54,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:31:54,753 INFO L513 BasicCegarLoop]: trace histogram [63, 62, 62, 62, 62, 1, 1, 1, 1] [2021-11-07 07:31:54,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2021-11-07 07:31:54,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-11-07 07:31:54,953 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:31:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:31:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1195707941, now seen corresponding path program 62 times [2021-11-07 07:31:54,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:31:54,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013667269] [2021-11-07 07:31:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:31:54,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:31:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:31:59,410 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:31:59,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:31:59,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013667269] [2021-11-07 07:31:59,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013667269] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:31:59,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672070413] [2021-11-07 07:31:59,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:31:59,411 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:31:59,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:31:59,412 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:31:59,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2021-11-07 07:32:05,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:32:05,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:05,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 127 conjunts are in the unsatisfiable core [2021-11-07 07:32:05,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:06,716 INFO L134 CoverageAnalysis]: Checked inductivity of 9579 backedges. 0 proven. 9579 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:06,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672070413] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:06,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:06,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [127, 127] total 129 [2021-11-07 07:32:06,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897838611] [2021-11-07 07:32:06,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2021-11-07 07:32:06,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:06,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2021-11-07 07:32:06,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4289, Invalid=12481, Unknown=0, NotChecked=0, Total=16770 [2021-11-07 07:32:06,720 INFO L87 Difference]: Start difference. First operand 319 states and 319 transitions. Second operand has 130 states, 129 states have (on average 2.4728682170542635) internal successors, (319), 130 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:09,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:09,695 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2021-11-07 07:32:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-11-07 07:32:09,695 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 129 states have (on average 2.4728682170542635) internal successors, (319), 130 states have internal predecessors, (319), 0 states have call successors, (0), 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 315 [2021-11-07 07:32:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:09,696 INFO L225 Difference]: With dead ends: 324 [2021-11-07 07:32:09,696 INFO L226 Difference]: Without dead ends: 323 [2021-11-07 07:32:09,698 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6289 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=10402, Invalid=26654, Unknown=0, NotChecked=0, Total=37056 [2021-11-07 07:32:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-07 07:32:09,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 322. [2021-11-07 07:32:09,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 320 states have (on average 1.00625) internal successors, (322), 321 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:09,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 322 transitions. [2021-11-07 07:32:09,703 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 322 transitions. Word has length 315 [2021-11-07 07:32:09,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:09,703 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 322 transitions. [2021-11-07 07:32:09,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 129 states have (on average 2.4728682170542635) internal successors, (319), 130 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:09,703 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 322 transitions. [2021-11-07 07:32:09,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-11-07 07:32:09,705 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:09,705 INFO L513 BasicCegarLoop]: trace histogram [63, 63, 63, 62, 62, 1, 1, 1, 1] [2021-11-07 07:32:09,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Ended with exit code 0 [2021-11-07 07:32:09,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126,125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:09,909 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:32:09,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:09,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1975902425, now seen corresponding path program 62 times [2021-11-07 07:32:09,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:09,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912079341] [2021-11-07 07:32:09,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:09,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:11,353 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:11,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:11,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912079341] [2021-11-07 07:32:11,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912079341] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:11,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488948107] [2021-11-07 07:32:11,354 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:32:11,354 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:11,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:11,355 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:11,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2021-11-07 07:32:17,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:32:17,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:17,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 64 conjunts are in the unsatisfiable core [2021-11-07 07:32:17,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:18,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9703 backedges. 0 proven. 9703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:18,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488948107] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:18,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:18,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 64 [2021-11-07 07:32:18,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420787316] [2021-11-07 07:32:18,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-07 07:32:18,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:18,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-07 07:32:18,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 07:32:18,948 INFO L87 Difference]: Start difference. First operand 322 states and 322 transitions. Second operand has 65 states, 64 states have (on average 4.953125) internal successors, (317), 65 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:19,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:19,140 INFO L93 Difference]: Finished difference Result 326 states and 326 transitions. [2021-11-07 07:32:19,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-07 07:32:19,141 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 4.953125) internal successors, (317), 65 states have internal predecessors, (317), 0 states have call successors, (0), 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 317 [2021-11-07 07:32:19,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:19,142 INFO L225 Difference]: With dead ends: 326 [2021-11-07 07:32:19,142 INFO L226 Difference]: Without dead ends: 325 [2021-11-07 07:32:19,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 07:32:19,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-07 07:32:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 324. [2021-11-07 07:32:19,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 322 states have (on average 1.0062111801242235) internal successors, (324), 323 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:19,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 324 transitions. [2021-11-07 07:32:19,150 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 324 transitions. Word has length 317 [2021-11-07 07:32:19,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:19,150 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 324 transitions. [2021-11-07 07:32:19,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 4.953125) internal successors, (317), 65 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:19,151 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 324 transitions. [2021-11-07 07:32:19,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2021-11-07 07:32:19,152 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:19,152 INFO L513 BasicCegarLoop]: trace histogram [64, 63, 63, 63, 63, 1, 1, 1, 1] [2021-11-07 07:32:19,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:19,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable127 [2021-11-07 07:32:19,357 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:32:19,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:19,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1582298127, now seen corresponding path program 63 times [2021-11-07 07:32:19,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:19,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776071576] [2021-11-07 07:32:19,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:19,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:24,860 INFO L134 CoverageAnalysis]: Checked inductivity of 9891 backedges. 0 proven. 9891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:24,860 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:24,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776071576] [2021-11-07 07:32:24,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776071576] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:24,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378118587] [2021-11-07 07:32:24,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:32:24,861 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:24,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:24,862 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:24,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2021-11-07 07:32:32,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-11-07 07:32:32,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:32:32,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 129 conjunts are in the unsatisfiable core [2021-11-07 07:32:32,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:32:33,104 INFO L134 CoverageAnalysis]: Checked inductivity of 9891 backedges. 0 proven. 9891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:33,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378118587] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:33,104 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:32:33,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [129, 129] total 131 [2021-11-07 07:32:33,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105610570] [2021-11-07 07:32:33,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-07 07:32:33,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 07:32:33,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-07 07:32:33,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4421, Invalid=12871, Unknown=0, NotChecked=0, Total=17292 [2021-11-07 07:32:33,108 INFO L87 Difference]: Start difference. First operand 324 states and 324 transitions. Second operand has 132 states, 131 states have (on average 2.4732824427480917) internal successors, (324), 132 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:32:36,495 INFO L93 Difference]: Finished difference Result 329 states and 329 transitions. [2021-11-07 07:32:36,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2021-11-07 07:32:36,495 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 131 states have (on average 2.4732824427480917) internal successors, (324), 132 states have internal predecessors, (324), 0 states have call successors, (0), 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 320 [2021-11-07 07:32:36,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:32:36,496 INFO L225 Difference]: With dead ends: 329 [2021-11-07 07:32:36,496 INFO L226 Difference]: Without dead ends: 328 [2021-11-07 07:32:36,500 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6485 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=10727, Invalid=27493, Unknown=0, NotChecked=0, Total=38220 [2021-11-07 07:32:36,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-11-07 07:32:36,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 327. [2021-11-07 07:32:36,504 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 07:32:36,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 327 transitions. [2021-11-07 07:32:36,505 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 327 transitions. Word has length 320 [2021-11-07 07:32:36,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:32:36,505 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 327 transitions. [2021-11-07 07:32:36,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 131 states have (on average 2.4732824427480917) internal successors, (324), 132 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 07:32:36,506 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 327 transitions. [2021-11-07 07:32:36,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2021-11-07 07:32:36,507 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:32:36,507 INFO L513 BasicCegarLoop]: trace histogram [64, 64, 64, 63, 63, 1, 1, 1, 1] [2021-11-07 07:32:36,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Forceful destruction successful, exit code 0 [2021-11-07 07:32:36,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 127 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable128 [2021-11-07 07:32:36,708 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-07 07:32:36,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:32:36,708 INFO L85 PathProgramCache]: Analyzing trace with hash -170075661, now seen corresponding path program 63 times [2021-11-07 07:32:36,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 07:32:36,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414594474] [2021-11-07 07:32:36,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:32:36,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 07:32:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:32:38,576 INFO L134 CoverageAnalysis]: Checked inductivity of 10017 backedges. 0 proven. 10017 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:32:38,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 07:32:38,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414594474] [2021-11-07 07:32:38,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414594474] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 07:32:38,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063364424] [2021-11-07 07:32:38,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:32:38,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 07:32:38,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:32:38,586 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 07:32:38,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_534d23ab-9b07-4249-8a42-0d2515fa3cc1/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process