./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:40:06,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:40:06,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:40:06,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:40:06,639 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:40:06,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:40:06,654 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:40:06,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:40:06,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:40:06,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:40:06,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:40:06,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:40:06,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:40:06,671 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:40:06,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:40:06,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:40:06,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:40:06,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:40:06,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:40:06,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:40:06,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:40:06,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:40:06,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:40:06,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:40:06,717 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:40:06,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:40:06,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:40:06,720 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:40:06,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:40:06,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:40:06,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:40:06,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:40:06,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:40:06,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:40:06,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:40:06,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:40:06,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:40:06,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:40:06,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:40:06,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:40:06,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:40:06,741 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-11-02 22:40:06,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:40:06,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:40:06,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:40:06,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:40:06,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:40:06,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:40:06,786 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:40:06,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:40:06,787 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:40:06,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:40:06,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:40:06,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:40:06,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:40:06,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:40:06,789 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-02 22:40:06,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:40:06,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:40:06,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:40:06,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:40:06,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:40:06,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:40:06,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:40:06,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:40:06,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:40:06,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:40:06,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:40:06,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:40:06,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:40:06,795 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:40:06,795 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_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 172ac4fa0310d14c59d9149bc1b8ec1548860e0b827250d611bfd9d710019753 [2021-11-02 22:40:07,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:40:07,244 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:40:07,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:40:07,252 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:40:07,253 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:40:07,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-11-02 22:40:07,377 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/data/97497f6d3/357ae81e93074545b3679e76bde3aa1f/FLAG43f0fcf44 [2021-11-02 22:40:08,101 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:40:08,102 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/sv-benchmarks/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-11-02 22:40:08,128 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/data/97497f6d3/357ae81e93074545b3679e76bde3aa1f/FLAG43f0fcf44 [2021-11-02 22:40:08,455 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/data/97497f6d3/357ae81e93074545b3679e76bde3aa1f [2021-11-02 22:40:08,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:40:08,467 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:40:08,474 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:40:08,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:40:08,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:40:08,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:08,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145f842b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08, skipping insertion in model container [2021-11-02 22:40:08,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:08,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:40:08,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:40:08,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:40:08,850 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:40:08,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:40:08,910 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:40:08,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08 WrapperNode [2021-11-02 22:40:08,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:40:08,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:40:08,914 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:40:08,914 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:40:08,924 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:08,931 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:08,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:40:08,962 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:40:08,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:40:08,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:40:08,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:08,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:08,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:08,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:08,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:08,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:08,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:08,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:40:08,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:40:08,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:40:08,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:40:08,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08" (1/1) ... [2021-11-02 22:40:09,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:40:09,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:09,048 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:40:09,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:40:09,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:40:09,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:40:09,344 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:40:09,344 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-02 22:40:09,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:40:09 BoogieIcfgContainer [2021-11-02 22:40:09,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:40:09,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:40:09,350 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:40:09,355 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:40:09,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:40:08" (1/3) ... [2021-11-02 22:40:09,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a2f486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:40:09, skipping insertion in model container [2021-11-02 22:40:09,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:40:08" (2/3) ... [2021-11-02 22:40:09,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75a2f486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:40:09, skipping insertion in model container [2021-11-02 22:40:09,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:40:09" (3/3) ... [2021-11-02 22:40:09,360 INFO L111 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Fig9a.c [2021-11-02 22:40:09,368 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:40:09,368 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-02 22:40:09,437 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:40:09,446 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 [2021-11-02 22:40:09,447 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-02 22:40:09,465 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:09,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-02 22:40:09,473 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:09,474 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-02 22:40:09,476 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:09,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:09,485 INFO L85 PathProgramCache]: Analyzing trace with hash 29684979, now seen corresponding path program 1 times [2021-11-02 22:40:09,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:09,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858550708] [2021-11-02 22:40:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:09,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:09,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:40:09,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:09,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858550708] [2021-11-02 22:40:09,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858550708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:40:09,742 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:40:09,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:40:09,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305488083] [2021-11-02 22:40:09,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:40:09,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:40:09,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:40:09,778 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) 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) [2021-11-02 22:40:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:09,906 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2021-11-02 22:40:09,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:40:09,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) 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 [2021-11-02 22:40:09,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:09,939 INFO L225 Difference]: With dead ends: 34 [2021-11-02 22:40:09,939 INFO L226 Difference]: Without dead ends: 12 [2021-11-02 22:40:09,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:40:10,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-02 22:40:10,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-02 22:40:10,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-02 22:40:10,026 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2021-11-02 22:40:10,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:10,027 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-02 22:40:10,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) 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) [2021-11-02 22:40:10,028 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-02 22:40:10,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-02 22:40:10,029 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:10,029 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-02 22:40:10,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:40:10,031 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:10,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:10,032 INFO L85 PathProgramCache]: Analyzing trace with hash 29685034, now seen corresponding path program 1 times [2021-11-02 22:40:10,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:10,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492873748] [2021-11-02 22:40:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:10,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:40:10,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:10,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492873748] [2021-11-02 22:40:10,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492873748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:40:10,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:40:10,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:40:10,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346370279] [2021-11-02 22:40:10,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:40:10,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:10,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:40:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:40:10,119 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-02 22:40:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:10,170 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-11-02 22:40:10,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:40:10,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2021-11-02 22:40:10,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:10,189 INFO L225 Difference]: With dead ends: 14 [2021-11-02 22:40:10,190 INFO L226 Difference]: Without dead ends: 13 [2021-11-02 22:40:10,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:40:10,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-02 22:40:10,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-02 22:40:10,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.4) internal successors, (14), 12 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) [2021-11-02 22:40:10,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-11-02 22:40:10,198 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 5 [2021-11-02 22:40:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:10,199 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-11-02 22:40:10,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2021-11-02 22:40:10,200 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-11-02 22:40:10,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 22:40:10,201 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:10,202 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:40:10,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:40:10,203 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:10,204 INFO L85 PathProgramCache]: Analyzing trace with hash 920236110, now seen corresponding path program 1 times [2021-11-02 22:40:10,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:10,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064739908] [2021-11-02 22:40:10,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:10,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:40:10,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:10,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064739908] [2021-11-02 22:40:10,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064739908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:40:10,321 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:40:10,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:40:10,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182022768] [2021-11-02 22:40:10,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:40:10,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:10,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:40:10,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:40:10,334 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:10,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:10,379 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2021-11-02 22:40:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:40:10,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-02 22:40:10,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:10,381 INFO L225 Difference]: With dead ends: 14 [2021-11-02 22:40:10,381 INFO L226 Difference]: Without dead ends: 13 [2021-11-02 22:40:10,382 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 [2021-11-02 22:40:10,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-02 22:40:10,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-11-02 22:40:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-11-02 22:40:10,389 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 6 [2021-11-02 22:40:10,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:10,390 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-11-02 22:40:10,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:10,391 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-11-02 22:40:10,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 22:40:10,391 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:10,392 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:40:10,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:40:10,393 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:10,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash -416359655, now seen corresponding path program 1 times [2021-11-02 22:40:10,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:10,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50935618] [2021-11-02 22:40:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:10,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:10,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:40:10,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:10,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50935618] [2021-11-02 22:40:10,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50935618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:40:10,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:40:10,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:40:10,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924979479] [2021-11-02 22:40:10,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:40:10,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:10,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:40:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:40:10,457 INFO L87 Difference]: Start difference. First operand 12 states and 13 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) [2021-11-02 22:40:10,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:10,529 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-02 22:40:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:40:10,531 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 [2021-11-02 22:40:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:10,532 INFO L225 Difference]: With dead ends: 22 [2021-11-02 22:40:10,533 INFO L226 Difference]: Without dead ends: 21 [2021-11-02 22:40:10,533 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 [2021-11-02 22:40:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-02 22:40:10,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-02 22:40:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 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) [2021-11-02 22:40:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-11-02 22:40:10,544 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 8 [2021-11-02 22:40:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:10,544 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-11-02 22:40:10,545 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) [2021-11-02 22:40:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-11-02 22:40:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 22:40:10,546 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:10,546 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:40:10,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:40:10,547 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:10,558 INFO L85 PathProgramCache]: Analyzing trace with hash -416359600, now seen corresponding path program 1 times [2021-11-02 22:40:10,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:10,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773538905] [2021-11-02 22:40:10,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:10,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:10,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:40:10,710 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:10,710 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773538905] [2021-11-02 22:40:10,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773538905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:10,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919328921] [2021-11-02 22:40:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:10,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:10,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:10,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:10,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:40:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:10,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:40:10,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:11,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:40:11,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919328921] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:11,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:11,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-02 22:40:11,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748109131] [2021-11-02 22:40:11,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:40:11,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:11,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:40:11,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:40:11,147 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 8 states, 8 states have (on average 1.75) 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) [2021-11-02 22:40:11,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:11,259 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-11-02 22:40:11,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:40:11,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) 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 8 [2021-11-02 22:40:11,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:11,261 INFO L225 Difference]: With dead ends: 34 [2021-11-02 22:40:11,262 INFO L226 Difference]: Without dead ends: 20 [2021-11-02 22:40:11,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:40:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-02 22:40:11,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-11-02 22:40:11,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:11,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-11-02 22:40:11,273 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2021-11-02 22:40:11,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:11,274 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-11-02 22:40:11,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) 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) [2021-11-02 22:40:11,274 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-11-02 22:40:11,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:40:11,276 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:11,276 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-11-02 22:40:11,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:11,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:11,492 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)] === [2021-11-02 22:40:11,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:11,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1618037052, now seen corresponding path program 1 times [2021-11-02 22:40:11,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:11,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489833511] [2021-11-02 22:40:11,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:11,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:11,593 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:40:11,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:11,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489833511] [2021-11-02 22:40:11,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489833511] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:11,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741306100] [2021-11-02 22:40:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:11,604 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:11,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:11,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:11,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:40:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:11,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:40:11,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:11,812 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:40:11,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741306100] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:11,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:11,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-11-02 22:40:11,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52245196] [2021-11-02 22:40:11,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:40:11,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:11,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:40:11,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:40:11,822 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2021-11-02 22:40:11,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:11,890 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-11-02 22:40:11,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:40:11,891 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) Word has length 15 [2021-11-02 22:40:11,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:11,895 INFO L225 Difference]: With dead ends: 29 [2021-11-02 22:40:11,895 INFO L226 Difference]: Without dead ends: 28 [2021-11-02 22:40:11,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:40:11,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-02 22:40:11,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-11-02 22:40:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 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) [2021-11-02 22:40:11,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-11-02 22:40:11,925 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 15 [2021-11-02 22:40:11,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:11,926 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-11-02 22:40:11,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2021-11-02 22:40:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-11-02 22:40:11,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:40:11,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:11,927 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:40:11,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:12,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:12,129 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)] === [2021-11-02 22:40:12,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:12,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1618037107, now seen corresponding path program 1 times [2021-11-02 22:40:12,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:12,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134690066] [2021-11-02 22:40:12,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:12,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:40:12,292 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:12,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134690066] [2021-11-02 22:40:12,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134690066] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:12,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509682828] [2021-11-02 22:40:12,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:12,295 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:12,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:12,297 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:12,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:40:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:12,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:40:12,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:12,546 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:40:12,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509682828] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:12,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:12,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-02 22:40:12,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230456226] [2021-11-02 22:40:12,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:40:12,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:12,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:40:12,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:40:12,552 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) [2021-11-02 22:40:12,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:12,809 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2021-11-02 22:40:12,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:40:12,811 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) Word has length 15 [2021-11-02 22:40:12,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:12,815 INFO L225 Difference]: With dead ends: 35 [2021-11-02 22:40:12,815 INFO L226 Difference]: Without dead ends: 34 [2021-11-02 22:40:12,816 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:40:12,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-02 22:40:12,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2021-11-02 22:40:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-11-02 22:40:12,835 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 15 [2021-11-02 22:40:12,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:12,836 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-02 22:40:12,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 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) [2021-11-02 22:40:12,837 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-11-02 22:40:12,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 22:40:12,838 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:12,838 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:40:12,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:13,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:13,056 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:13,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:13,057 INFO L85 PathProgramCache]: Analyzing trace with hash 525547111, now seen corresponding path program 2 times [2021-11-02 22:40:13,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:13,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674138041] [2021-11-02 22:40:13,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:13,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:40:13,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:13,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674138041] [2021-11-02 22:40:13,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674138041] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:13,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295797141] [2021-11-02 22:40:13,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:40:13,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:13,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:13,176 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:13,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:40:13,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:40:13,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:13,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:40:13,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:40:13,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295797141] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:13,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:13,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-02 22:40:13,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915501594] [2021-11-02 22:40:13,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 22:40:13,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:13,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 22:40:13,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:40:13,589 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:14,081 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2021-11-02 22:40:14,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-02 22:40:14,097 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-02 22:40:14,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:14,098 INFO L225 Difference]: With dead ends: 46 [2021-11-02 22:40:14,098 INFO L226 Difference]: Without dead ends: 32 [2021-11-02 22:40:14,099 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:40:14,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-11-02 22:40:14,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-11-02 22:40:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-11-02 22:40:14,114 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2021-11-02 22:40:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:14,115 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-11-02 22:40:14,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-11-02 22:40:14,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:40:14,118 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:14,118 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2021-11-02 22:40:14,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:14,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:14,338 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:14,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:14,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1308638649, now seen corresponding path program 2 times [2021-11-02 22:40:14,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:14,340 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741797588] [2021-11-02 22:40:14,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:14,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:14,439 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 22:40:14,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:14,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741797588] [2021-11-02 22:40:14,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741797588] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:14,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383758583] [2021-11-02 22:40:14,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:40:14,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:14,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:14,446 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:14,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:40:14,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-02 22:40:14,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:14,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:40:14,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:14,707 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 22:40:14,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383758583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:14,707 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:14,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 2] total 5 [2021-11-02 22:40:14,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068590886] [2021-11-02 22:40:14,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:40:14,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:14,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:40:14,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:40:14,713 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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) [2021-11-02 22:40:14,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:14,802 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-11-02 22:40:14,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:40:14,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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 22 [2021-11-02 22:40:14,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:14,807 INFO L225 Difference]: With dead ends: 28 [2021-11-02 22:40:14,807 INFO L226 Difference]: Without dead ends: 27 [2021-11-02 22:40:14,807 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:40:14,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-02 22:40:14,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-11-02 22:40:14,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:14,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-11-02 22:40:14,817 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2021-11-02 22:40:14,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:14,817 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-11-02 22:40:14,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 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) [2021-11-02 22:40:14,818 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-11-02 22:40:14,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:40:14,819 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:14,820 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1] [2021-11-02 22:40:14,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:15,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:15,034 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:15,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:15,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1308638704, now seen corresponding path program 3 times [2021-11-02 22:40:15,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:15,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084205358] [2021-11-02 22:40:15,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:15,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:40:15,153 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:15,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084205358] [2021-11-02 22:40:15,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084205358] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:15,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666170618] [2021-11-02 22:40:15,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:40:15,156 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:15,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:15,163 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:15,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 22:40:15,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-02 22:40:15,273 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:15,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:40:15,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:15,466 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:40:15,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666170618] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:15,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:15,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-11-02 22:40:15,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507797557] [2021-11-02 22:40:15,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-02 22:40:15,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:15,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-02 22:40:15,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:40:15,474 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:15,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:15,764 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2021-11-02 22:40:15,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 22:40:15,765 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:40:15,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:15,766 INFO L225 Difference]: With dead ends: 47 [2021-11-02 22:40:15,766 INFO L226 Difference]: Without dead ends: 46 [2021-11-02 22:40:15,767 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:40:15,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-02 22:40:15,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 33. [2021-11-02 22:40:15,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.125) internal successors, (36), 32 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2021-11-02 22:40:15,775 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 22 [2021-11-02 22:40:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:15,776 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2021-11-02 22:40:15,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:15,776 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2021-11-02 22:40:15,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 22:40:15,777 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:15,777 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 1, 1, 1] [2021-11-02 22:40:15,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:16,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:40:16,004 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)] === [2021-11-02 22:40:16,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:16,005 INFO L85 PathProgramCache]: Analyzing trace with hash 237540554, now seen corresponding path program 4 times [2021-11-02 22:40:16,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:16,005 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475426164] [2021-11-02 22:40:16,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:16,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:16,181 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 5 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:40:16,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:16,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475426164] [2021-11-02 22:40:16,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475426164] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:16,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735041935] [2021-11-02 22:40:16,182 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:40:16,182 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:16,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:16,188 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:16,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-02 22:40:16,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:40:16,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:16,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:40:16,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:40:16,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735041935] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:16,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:16,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-11-02 22:40:16,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419256354] [2021-11-02 22:40:16,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:40:16,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:40:16,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:40:16,818 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:17,429 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2021-11-02 22:40:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 22:40:17,430 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-02 22:40:17,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:17,431 INFO L225 Difference]: With dead ends: 73 [2021-11-02 22:40:17,432 INFO L226 Difference]: Without dead ends: 64 [2021-11-02 22:40:17,433 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=212, Invalid=658, Unknown=0, NotChecked=0, Total=870 [2021-11-02 22:40:17,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-02 22:40:17,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 54. [2021-11-02 22:40:17,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.150943396226415) internal successors, (61), 53 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:17,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2021-11-02 22:40:17,447 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 25 [2021-11-02 22:40:17,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:17,448 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2021-11-02 22:40:17,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 18 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:17,449 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2021-11-02 22:40:17,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-02 22:40:17,451 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:17,451 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 2, 2, 2, 1, 1, 1] [2021-11-02 22:40:17,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-02 22:40:17,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-02 22:40:17,676 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:17,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:17,677 INFO L85 PathProgramCache]: Analyzing trace with hash 646832318, now seen corresponding path program 5 times [2021-11-02 22:40:17,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:17,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155341964] [2021-11-02 22:40:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:17,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:40:17,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:17,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155341964] [2021-11-02 22:40:17,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155341964] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:17,843 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451570902] [2021-11-02 22:40:17,843 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:40:17,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:17,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:17,851 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:17,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-02 22:40:17,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-02 22:40:17,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:17,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:40:17,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-02 22:40:18,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451570902] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:18,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:18,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-11-02 22:40:18,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622693377] [2021-11-02 22:40:18,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 22:40:18,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:18,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 22:40:18,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:40:18,306 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 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) [2021-11-02 22:40:19,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:19,004 INFO L93 Difference]: Finished difference Result 87 states and 100 transitions. [2021-11-02 22:40:19,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-02 22:40:19,005 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 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 28 [2021-11-02 22:40:19,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:19,008 INFO L225 Difference]: With dead ends: 87 [2021-11-02 22:40:19,008 INFO L226 Difference]: Without dead ends: 86 [2021-11-02 22:40:19,012 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2021-11-02 22:40:19,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-11-02 22:40:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 67. [2021-11-02 22:40:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 66 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:19,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2021-11-02 22:40:19,044 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 28 [2021-11-02 22:40:19,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:19,044 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2021-11-02 22:40:19,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0) internal successors, (42), 15 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) [2021-11-02 22:40:19,045 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2021-11-02 22:40:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-02 22:40:19,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:19,056 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 1, 1, 1] [2021-11-02 22:40:19,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:19,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:19,279 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)] === [2021-11-02 22:40:19,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:19,280 INFO L85 PathProgramCache]: Analyzing trace with hash -60181805, now seen corresponding path program 6 times [2021-11-02 22:40:19,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:19,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830243281] [2021-11-02 22:40:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:19,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:19,442 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:40:19,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:19,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830243281] [2021-11-02 22:40:19,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830243281] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:19,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903016595] [2021-11-02 22:40:19,443 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:40:19,443 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:19,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:19,455 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:19,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-02 22:40:19,603 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-11-02 22:40:19,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:19,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:40:19,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-02 22:40:19,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903016595] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:19,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:19,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-11-02 22:40:19,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442250034] [2021-11-02 22:40:19,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:40:19,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:19,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:40:19,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:40:19,825 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:20,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:20,239 INFO L93 Difference]: Finished difference Result 143 states and 166 transitions. [2021-11-02 22:40:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-02 22:40:20,244 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-02 22:40:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:20,246 INFO L225 Difference]: With dead ends: 143 [2021-11-02 22:40:20,246 INFO L226 Difference]: Without dead ends: 142 [2021-11-02 22:40:20,247 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:40:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-11-02 22:40:20,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 85. [2021-11-02 22:40:20,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.1666666666666667) internal successors, (98), 84 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:20,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 98 transitions. [2021-11-02 22:40:20,269 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 98 transitions. Word has length 29 [2021-11-02 22:40:20,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:20,269 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 98 transitions. [2021-11-02 22:40:20,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:20,270 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 98 transitions. [2021-11-02 22:40:20,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:40:20,272 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:20,272 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 2, 2, 2, 1, 1, 1] [2021-11-02 22:40:20,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:20,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-02 22:40:20,491 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:20,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:20,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1736616132, now seen corresponding path program 7 times [2021-11-02 22:40:20,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:20,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522244981] [2021-11-02 22:40:20,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:20,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:20,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:20,597 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 6 proven. 65 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:40:20,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:20,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522244981] [2021-11-02 22:40:20,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522244981] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:20,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792567952] [2021-11-02 22:40:20,597 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:40:20,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:20,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:20,599 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:20,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-02 22:40:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:20,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:40:20,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:21,277 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 15 proven. 56 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:40:21,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792567952] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:21,278 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:21,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-02 22:40:21,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162613365] [2021-11-02 22:40:21,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 22:40:21,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:21,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 22:40:21,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:40:21,284 INFO L87 Difference]: Start difference. First operand 85 states and 98 transitions. Second operand has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 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) [2021-11-02 22:40:21,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:21,789 INFO L93 Difference]: Finished difference Result 134 states and 154 transitions. [2021-11-02 22:40:21,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-02 22:40:21,790 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 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 31 [2021-11-02 22:40:21,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:21,793 INFO L225 Difference]: With dead ends: 134 [2021-11-02 22:40:21,793 INFO L226 Difference]: Without dead ends: 109 [2021-11-02 22:40:21,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=491, Unknown=0, NotChecked=0, Total=702 [2021-11-02 22:40:21,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-02 22:40:21,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2021-11-02 22:40:21,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1649484536082475) internal successors, (113), 97 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions. [2021-11-02 22:40:21,830 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 31 [2021-11-02 22:40:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:21,831 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 113 transitions. [2021-11-02 22:40:21,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.375) internal successors, (54), 16 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) [2021-11-02 22:40:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 113 transitions. [2021-11-02 22:40:21,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-02 22:40:21,833 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:21,833 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 3, 3, 3, 1, 1, 1] [2021-11-02 22:40:21,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:22,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-02 22:40:22,048 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)] === [2021-11-02 22:40:22,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:22,049 INFO L85 PathProgramCache]: Analyzing trace with hash -583606431, now seen corresponding path program 8 times [2021-11-02 22:40:22,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:22,049 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99491087] [2021-11-02 22:40:22,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:22,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:22,210 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 7 proven. 80 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:40:22,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:22,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99491087] [2021-11-02 22:40:22,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99491087] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:22,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622515698] [2021-11-02 22:40:22,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:40:22,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:22,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:22,221 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:22,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-02 22:40:22,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:40:22,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:22,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:40:22,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:22,874 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 22:40:22,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622515698] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:22,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:22,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2021-11-02 22:40:22,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297185955] [2021-11-02 22:40:22,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 22:40:22,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:22,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 22:40:22,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:40:22,879 INFO L87 Difference]: Start difference. First operand 98 states and 113 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:24,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:24,950 INFO L93 Difference]: Finished difference Result 237 states and 276 transitions. [2021-11-02 22:40:24,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-02 22:40:24,951 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:40:24,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:24,954 INFO L225 Difference]: With dead ends: 237 [2021-11-02 22:40:24,954 INFO L226 Difference]: Without dead ends: 192 [2021-11-02 22:40:24,963 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1082 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=714, Invalid=3318, Unknown=0, NotChecked=0, Total=4032 [2021-11-02 22:40:24,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-02 22:40:25,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 155. [2021-11-02 22:40:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.1363636363636365) internal successors, (175), 154 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 175 transitions. [2021-11-02 22:40:25,011 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 175 transitions. Word has length 35 [2021-11-02 22:40:25,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:25,014 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 175 transitions. [2021-11-02 22:40:25,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:25,014 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 175 transitions. [2021-11-02 22:40:25,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-02 22:40:25,022 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:25,023 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 4, 1, 1, 1] [2021-11-02 22:40:25,078 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-02 22:40:25,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:25,240 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:25,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:25,241 INFO L85 PathProgramCache]: Analyzing trace with hash 450922640, now seen corresponding path program 9 times [2021-11-02 22:40:25,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:25,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495807546] [2021-11-02 22:40:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:25,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:40:25,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:25,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495807546] [2021-11-02 22:40:25,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495807546] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:25,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728232762] [2021-11-02 22:40:25,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:40:25,371 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:25,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:25,373 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:25,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-02 22:40:25,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-02 22:40:25,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:25,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:40:25,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:25,817 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-02 22:40:25,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728232762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:25,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:25,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-02 22:40:25,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863738026] [2021-11-02 22:40:25,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-02 22:40:25,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:25,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-02 22:40:25,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:40:25,821 INFO L87 Difference]: Start difference. First operand 155 states and 175 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 13 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) [2021-11-02 22:40:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:26,238 INFO L93 Difference]: Finished difference Result 254 states and 285 transitions. [2021-11-02 22:40:26,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-02 22:40:26,239 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 13 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 36 [2021-11-02 22:40:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:26,241 INFO L225 Difference]: With dead ends: 254 [2021-11-02 22:40:26,242 INFO L226 Difference]: Without dead ends: 253 [2021-11-02 22:40:26,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:40:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-11-02 22:40:26,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 193. [2021-11-02 22:40:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.1302083333333333) internal successors, (217), 192 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) [2021-11-02 22:40:26,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 217 transitions. [2021-11-02 22:40:26,271 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 217 transitions. Word has length 36 [2021-11-02 22:40:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:26,272 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 217 transitions. [2021-11-02 22:40:26,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 13 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) [2021-11-02 22:40:26,272 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 217 transitions. [2021-11-02 22:40:26,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-02 22:40:26,274 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:26,274 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 5, 1, 1, 1] [2021-11-02 22:40:26,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:26,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 22:40:26,480 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)] === [2021-11-02 22:40:26,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:26,480 INFO L85 PathProgramCache]: Analyzing trace with hash -146918349, now seen corresponding path program 10 times [2021-11-02 22:40:26,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:26,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198103083] [2021-11-02 22:40:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:26,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:26,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:40:26,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:26,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198103083] [2021-11-02 22:40:26,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198103083] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:26,609 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483376708] [2021-11-02 22:40:26,609 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:40:26,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:26,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:26,611 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:26,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-02 22:40:26,841 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:40:26,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:26,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:40:26,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:27,069 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-02 22:40:27,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1483376708] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:27,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:27,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2021-11-02 22:40:27,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642056457] [2021-11-02 22:40:27,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-02 22:40:27,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:27,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-02 22:40:27,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-11-02 22:40:27,072 INFO L87 Difference]: Start difference. First operand 193 states and 217 transitions. Second operand has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 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) [2021-11-02 22:40:27,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:27,645 INFO L93 Difference]: Finished difference Result 331 states and 373 transitions. [2021-11-02 22:40:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-02 22:40:27,645 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 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 43 [2021-11-02 22:40:27,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:27,648 INFO L225 Difference]: With dead ends: 331 [2021-11-02 22:40:27,649 INFO L226 Difference]: Without dead ends: 330 [2021-11-02 22:40:27,650 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=371, Invalid=1189, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 22:40:27,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-11-02 22:40:27,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 224. [2021-11-02 22:40:27,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 1.1345291479820627) internal successors, (253), 223 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:27,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 253 transitions. [2021-11-02 22:40:27,685 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 253 transitions. Word has length 43 [2021-11-02 22:40:27,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:27,685 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 253 transitions. [2021-11-02 22:40:27,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.769230769230769) internal successors, (49), 14 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) [2021-11-02 22:40:27,686 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 253 transitions. [2021-11-02 22:40:27,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 22:40:27,688 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:27,688 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 5, 4, 4, 4, 1, 1, 1] [2021-11-02 22:40:27,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:27,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-02 22:40:27,905 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:27,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1588192968, now seen corresponding path program 11 times [2021-11-02 22:40:27,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:27,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001427124] [2021-11-02 22:40:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:27,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 0 proven. 152 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:40:28,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:28,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001427124] [2021-11-02 22:40:28,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001427124] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:28,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368613052] [2021-11-02 22:40:28,046 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:40:28,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:28,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:28,047 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:28,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-02 22:40:28,265 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-11-02 22:40:28,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:28,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-02 22:40:28,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 27 proven. 120 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-02 22:40:28,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368613052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:28,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:28,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2021-11-02 22:40:28,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625797500] [2021-11-02 22:40:28,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 22:40:28,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 22:40:28,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:40:28,642 INFO L87 Difference]: Start difference. First operand 224 states and 253 transitions. Second operand has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:29,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:29,847 INFO L93 Difference]: Finished difference Result 342 states and 395 transitions. [2021-11-02 22:40:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-02 22:40:29,848 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:40:29,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:29,850 INFO L225 Difference]: With dead ends: 342 [2021-11-02 22:40:29,850 INFO L226 Difference]: Without dead ends: 341 [2021-11-02 22:40:29,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1256 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=762, Invalid=3144, Unknown=0, NotChecked=0, Total=3906 [2021-11-02 22:40:29,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-02 22:40:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 196. [2021-11-02 22:40:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 1.1435897435897435) internal successors, (223), 195 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 223 transitions. [2021-11-02 22:40:29,885 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 223 transitions. Word has length 45 [2021-11-02 22:40:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:29,885 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 223 transitions. [2021-11-02 22:40:29,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.75) internal successors, (60), 17 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 223 transitions. [2021-11-02 22:40:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 22:40:29,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:29,887 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 1, 1, 1] [2021-11-02 22:40:29,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:30,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-02 22:40:30,109 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)] === [2021-11-02 22:40:30,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:30,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1973009200, now seen corresponding path program 12 times [2021-11-02 22:40:30,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:30,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199034516] [2021-11-02 22:40:30,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:30,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:40:30,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:30,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199034516] [2021-11-02 22:40:30,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199034516] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:30,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134787524] [2021-11-02 22:40:30,266 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:40:30,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:30,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:30,268 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:30,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-02 22:40:30,554 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-11-02 22:40:30,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:30,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:40:30,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:30,815 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:40:30,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134787524] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:30,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:30,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 14 [2021-11-02 22:40:30,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084678458] [2021-11-02 22:40:30,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-02 22:40:30,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:30,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-02 22:40:30,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2021-11-02 22:40:30,818 INFO L87 Difference]: Start difference. First operand 196 states and 223 transitions. Second operand has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:31,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:31,440 INFO L93 Difference]: Finished difference Result 397 states and 453 transitions. [2021-11-02 22:40:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-02 22:40:31,441 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:40:31,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:31,444 INFO L225 Difference]: With dead ends: 397 [2021-11-02 22:40:31,444 INFO L226 Difference]: Without dead ends: 396 [2021-11-02 22:40:31,446 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=485, Invalid=1585, Unknown=0, NotChecked=0, Total=2070 [2021-11-02 22:40:31,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-02 22:40:31,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 227. [2021-11-02 22:40:31,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.1460176991150441) internal successors, (259), 226 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) [2021-11-02 22:40:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 259 transitions. [2021-11-02 22:40:31,477 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 259 transitions. Word has length 50 [2021-11-02 22:40:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:31,478 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 259 transitions. [2021-11-02 22:40:31,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.0) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:31,479 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 259 transitions. [2021-11-02 22:40:31,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 22:40:31,479 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:31,480 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 6, 5, 5, 5, 1, 1, 1] [2021-11-02 22:40:31,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:31,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:31,684 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:31,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:31,684 INFO L85 PathProgramCache]: Analyzing trace with hash -152316683, now seen corresponding path program 13 times [2021-11-02 22:40:31,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:31,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831106113] [2021-11-02 22:40:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:31,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:31,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 189 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:40:31,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:31,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831106113] [2021-11-02 22:40:31,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831106113] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:31,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139235836] [2021-11-02 22:40:31,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:40:31,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:31,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:31,904 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:31,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-02 22:40:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:32,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:40:32,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:32,859 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 39 proven. 170 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:40:32,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139235836] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:32,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:32,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 23 [2021-11-02 22:40:32,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691433911] [2021-11-02 22:40:32,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 22:40:32,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:32,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 22:40:32,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2021-11-02 22:40:32,863 INFO L87 Difference]: Start difference. First operand 227 states and 259 transitions. Second operand has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:33,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:33,839 INFO L93 Difference]: Finished difference Result 379 states and 432 transitions. [2021-11-02 22:40:33,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:40:33,840 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-11-02 22:40:33,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:33,843 INFO L225 Difference]: With dead ends: 379 [2021-11-02 22:40:33,844 INFO L226 Difference]: Without dead ends: 290 [2021-11-02 22:40:33,846 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 470 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=556, Invalid=1796, Unknown=0, NotChecked=0, Total=2352 [2021-11-02 22:40:33,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-11-02 22:40:33,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 264. [2021-11-02 22:40:33,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.1368821292775666) internal successors, (299), 263 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) [2021-11-02 22:40:33,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 299 transitions. [2021-11-02 22:40:33,901 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 299 transitions. Word has length 52 [2021-11-02 22:40:33,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:33,902 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 299 transitions. [2021-11-02 22:40:33,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.260869565217391) internal successors, (75), 23 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:33,903 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 299 transitions. [2021-11-02 22:40:33,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:40:33,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:33,904 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 7, 7, 7, 1, 1, 1] [2021-11-02 22:40:33,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:34,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:34,112 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)] === [2021-11-02 22:40:34,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:34,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1310405229, now seen corresponding path program 14 times [2021-11-02 22:40:34,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:34,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219691900] [2021-11-02 22:40:34,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:34,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 22:40:34,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:34,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219691900] [2021-11-02 22:40:34,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219691900] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:34,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60593455] [2021-11-02 22:40:34,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:40:34,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:34,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:34,244 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:34,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-02 22:40:34,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:40:34,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:34,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:40:34,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 22:40:34,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60593455] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:34,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:34,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 15 [2021-11-02 22:40:34,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981537587] [2021-11-02 22:40:34,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-02 22:40:34,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-02 22:40:34,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-11-02 22:40:34,801 INFO L87 Difference]: Start difference. First operand 264 states and 299 transitions. Second operand has 16 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:35,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:35,640 INFO L93 Difference]: Finished difference Result 546 states and 622 transitions. [2021-11-02 22:40:35,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-11-02 22:40:35,641 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:40:35,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:35,646 INFO L225 Difference]: With dead ends: 546 [2021-11-02 22:40:35,646 INFO L226 Difference]: Without dead ends: 545 [2021-11-02 22:40:35,649 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=614, Invalid=2038, Unknown=0, NotChecked=0, Total=2652 [2021-11-02 22:40:35,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2021-11-02 22:40:35,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 305. [2021-11-02 22:40:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.138157894736842) internal successors, (346), 304 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 346 transitions. [2021-11-02 22:40:35,698 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 346 transitions. Word has length 57 [2021-11-02 22:40:35,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:35,698 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 346 transitions. [2021-11-02 22:40:35,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.2) internal successors, (63), 16 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 346 transitions. [2021-11-02 22:40:35,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-02 22:40:35,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:35,700 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 5, 5, 5, 1, 1, 1] [2021-11-02 22:40:35,751 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:35,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:35,923 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:35,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:35,924 INFO L85 PathProgramCache]: Analyzing trace with hash -23331583, now seen corresponding path program 15 times [2021-11-02 22:40:35,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:35,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859663152] [2021-11-02 22:40:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:35,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:36,132 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 50 proven. 263 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 22:40:36,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:36,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859663152] [2021-11-02 22:40:36,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859663152] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:36,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839804546] [2021-11-02 22:40:36,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:40:36,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:36,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:36,134 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:36,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-02 22:40:36,460 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-11-02 22:40:36,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:36,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:40:36,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:37,012 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 165 proven. 110 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-02 22:40:37,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839804546] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:37,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:37,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 27 [2021-11-02 22:40:37,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89757641] [2021-11-02 22:40:37,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-02 22:40:37,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:37,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-02 22:40:37,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-11-02 22:40:37,015 INFO L87 Difference]: Start difference. First operand 305 states and 346 transitions. Second operand has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 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) [2021-11-02 22:40:39,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:39,471 INFO L93 Difference]: Finished difference Result 544 states and 629 transitions. [2021-11-02 22:40:39,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-02 22:40:39,475 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 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 61 [2021-11-02 22:40:39,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:39,478 INFO L225 Difference]: With dead ends: 544 [2021-11-02 22:40:39,478 INFO L226 Difference]: Without dead ends: 432 [2021-11-02 22:40:39,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1225 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1038, Invalid=4512, Unknown=0, NotChecked=0, Total=5550 [2021-11-02 22:40:39,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-02 22:40:39,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 383. [2021-11-02 22:40:39,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 1.1544502617801047) internal successors, (441), 382 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:39,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 441 transitions. [2021-11-02 22:40:39,541 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 441 transitions. Word has length 61 [2021-11-02 22:40:39,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:39,542 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 441 transitions. [2021-11-02 22:40:39,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.2962962962962963) internal successors, (89), 27 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) [2021-11-02 22:40:39,542 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 441 transitions. [2021-11-02 22:40:39,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:40:39,544 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:39,545 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 7, 6, 6, 6, 1, 1, 1] [2021-11-02 22:40:39,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:39,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-02 22:40:39,759 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)] === [2021-11-02 22:40:39,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:39,760 INFO L85 PathProgramCache]: Analyzing trace with hash 492053964, now seen corresponding path program 16 times [2021-11-02 22:40:39,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:39,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422796625] [2021-11-02 22:40:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:39,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 312 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 22:40:39,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:39,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422796625] [2021-11-02 22:40:39,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422796625] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:39,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831708372] [2021-11-02 22:40:39,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:40:39,931 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:39,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:39,936 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:39,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-02 22:40:40,405 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:40:40,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:40,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:40:40,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 46 proven. 226 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-02 22:40:40,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831708372] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:40,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:40,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 19 [2021-11-02 22:40:40,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142015374] [2021-11-02 22:40:40,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 22:40:40,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:40,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 22:40:40,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:40:40,778 INFO L87 Difference]: Start difference. First operand 383 states and 441 transitions. Second operand has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 20 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) [2021-11-02 22:40:42,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:42,724 INFO L93 Difference]: Finished difference Result 738 states and 864 transitions. [2021-11-02 22:40:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-02 22:40:42,725 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 20 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 62 [2021-11-02 22:40:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:42,730 INFO L225 Difference]: With dead ends: 738 [2021-11-02 22:40:42,730 INFO L226 Difference]: Without dead ends: 737 [2021-11-02 22:40:42,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2970 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1580, Invalid=6430, Unknown=0, NotChecked=0, Total=8010 [2021-11-02 22:40:42,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-02 22:40:42,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 395. [2021-11-02 22:40:42,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.1700507614213198) internal successors, (461), 394 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:42,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 461 transitions. [2021-11-02 22:40:42,803 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 461 transitions. Word has length 62 [2021-11-02 22:40:42,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:42,804 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 461 transitions. [2021-11-02 22:40:42,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 20 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) [2021-11-02 22:40:42,805 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 461 transitions. [2021-11-02 22:40:42,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:40:42,806 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:42,806 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 8, 8, 8, 1, 1, 1] [2021-11-02 22:40:42,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:43,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:43,019 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:43,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:43,020 INFO L85 PathProgramCache]: Analyzing trace with hash 477484496, now seen corresponding path program 17 times [2021-11-02 22:40:43,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:43,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518985933] [2021-11-02 22:40:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:43,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 22:40:43,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:43,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518985933] [2021-11-02 22:40:43,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518985933] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:43,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392621873] [2021-11-02 22:40:43,160 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:40:43,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:43,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:43,161 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:43,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-02 22:40:43,538 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-11-02 22:40:43,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:43,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:40:43,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 22:40:43,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392621873] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:43,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:43,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 16 [2021-11-02 22:40:43,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102688787] [2021-11-02 22:40:43,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-02 22:40:43,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:43,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-02 22:40:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2021-11-02 22:40:43,901 INFO L87 Difference]: Start difference. First operand 395 states and 461 transitions. Second operand has 17 states, 16 states have (on average 4.375) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:44,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:44,883 INFO L93 Difference]: Finished difference Result 962 states and 1096 transitions. [2021-11-02 22:40:44,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-02 22:40:44,884 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.375) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-02 22:40:44,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:44,891 INFO L225 Difference]: With dead ends: 962 [2021-11-02 22:40:44,891 INFO L226 Difference]: Without dead ends: 961 [2021-11-02 22:40:44,893 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 978 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=758, Invalid=2548, Unknown=0, NotChecked=0, Total=3306 [2021-11-02 22:40:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2021-11-02 22:40:44,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 423. [2021-11-02 22:40:44,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 1.1658767772511849) internal successors, (492), 422 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 492 transitions. [2021-11-02 22:40:44,992 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 492 transitions. Word has length 64 [2021-11-02 22:40:44,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:44,993 INFO L470 AbstractCegarLoop]: Abstraction has 423 states and 492 transitions. [2021-11-02 22:40:44,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.375) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 492 transitions. [2021-11-02 22:40:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 22:40:44,996 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:44,996 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 9, 9, 9, 1, 1, 1] [2021-11-02 22:40:45,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:45,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:45,223 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)] === [2021-11-02 22:40:45,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1496088845, now seen corresponding path program 18 times [2021-11-02 22:40:45,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:45,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853121415] [2021-11-02 22:40:45,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:45,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:45,400 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 398 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:40:45,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:45,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853121415] [2021-11-02 22:40:45,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853121415] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:45,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501537961] [2021-11-02 22:40:45,401 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:40:45,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:45,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:45,402 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:45,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-02 22:40:45,954 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-11-02 22:40:45,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:45,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:40:45,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:46,263 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 0 proven. 398 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-02 22:40:46,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501537961] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:46,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:46,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 17 [2021-11-02 22:40:46,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26438811] [2021-11-02 22:40:46,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:40:46,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:46,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:40:46,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:40:46,265 INFO L87 Difference]: Start difference. First operand 423 states and 492 transitions. Second operand has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 18 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) [2021-11-02 22:40:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:47,474 INFO L93 Difference]: Finished difference Result 1161 states and 1326 transitions. [2021-11-02 22:40:47,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-02 22:40:47,475 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 18 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 71 [2021-11-02 22:40:47,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:47,484 INFO L225 Difference]: With dead ends: 1161 [2021-11-02 22:40:47,484 INFO L226 Difference]: Without dead ends: 1160 [2021-11-02 22:40:47,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=917, Invalid=3115, Unknown=0, NotChecked=0, Total=4032 [2021-11-02 22:40:47,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2021-11-02 22:40:47,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 461. [2021-11-02 22:40:47,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 460 states have (on average 1.1608695652173913) internal successors, (534), 460 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:47,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 534 transitions. [2021-11-02 22:40:47,574 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 534 transitions. Word has length 71 [2021-11-02 22:40:47,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:47,574 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 534 transitions. [2021-11-02 22:40:47,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.529411764705882) internal successors, (77), 18 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) [2021-11-02 22:40:47,575 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 534 transitions. [2021-11-02 22:40:47,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 22:40:47,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:47,577 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 10, 10, 10, 1, 1, 1] [2021-11-02 22:40:47,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:47,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-02 22:40:47,800 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:47,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:47,800 INFO L85 PathProgramCache]: Analyzing trace with hash 71227504, now seen corresponding path program 19 times [2021-11-02 22:40:47,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:47,801 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380234112] [2021-11-02 22:40:47,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:47,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:47,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:40:47,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:47,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380234112] [2021-11-02 22:40:47,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380234112] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:47,998 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239191315] [2021-11-02 22:40:47,998 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:40:47,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:47,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:47,999 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:48,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-02 22:40:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:48,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:40:48,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 0 proven. 487 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-02 22:40:48,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1239191315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:48,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:48,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 18 [2021-11-02 22:40:48,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847509984] [2021-11-02 22:40:48,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 22:40:48,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:48,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 22:40:48,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-02 22:40:48,737 INFO L87 Difference]: Start difference. First operand 461 states and 534 transitions. Second operand has 19 states, 18 states have (on average 4.666666666666667) internal successors, (84), 19 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) [2021-11-02 22:40:49,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:49,989 INFO L93 Difference]: Finished difference Result 1376 states and 1574 transitions. [2021-11-02 22:40:49,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-02 22:40:49,990 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.666666666666667) internal successors, (84), 19 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 78 [2021-11-02 22:40:49,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:49,999 INFO L225 Difference]: With dead ends: 1376 [2021-11-02 22:40:50,000 INFO L226 Difference]: Without dead ends: 1375 [2021-11-02 22:40:50,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1491 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1091, Invalid=3739, Unknown=0, NotChecked=0, Total=4830 [2021-11-02 22:40:50,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2021-11-02 22:40:50,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 512. [2021-11-02 22:40:50,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 1.1585127201565557) internal successors, (592), 511 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:50,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 592 transitions. [2021-11-02 22:40:50,103 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 592 transitions. Word has length 78 [2021-11-02 22:40:50,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:50,104 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 592 transitions. [2021-11-02 22:40:50,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.666666666666667) internal successors, (84), 19 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) [2021-11-02 22:40:50,104 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 592 transitions. [2021-11-02 22:40:50,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-02 22:40:50,106 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:50,107 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 7, 6, 6, 6, 1, 1, 1] [2021-11-02 22:40:50,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:50,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-02 22:40:50,336 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)] === [2021-11-02 22:40:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:50,336 INFO L85 PathProgramCache]: Analyzing trace with hash 473691938, now seen corresponding path program 20 times [2021-11-02 22:40:50,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:50,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803174676] [2021-11-02 22:40:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:50,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:50,551 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-11-02 22:40:50,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:50,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803174676] [2021-11-02 22:40:50,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803174676] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:50,552 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429292196] [2021-11-02 22:40:50,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:40:50,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:50,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:50,556 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:50,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-02 22:40:51,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:40:51,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:51,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:40:51,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-02 22:40:52,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429292196] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:52,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:52,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 22 [2021-11-02 22:40:52,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366614020] [2021-11-02 22:40:52,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 22:40:52,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:52,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 22:40:52,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2021-11-02 22:40:52,086 INFO L87 Difference]: Start difference. First operand 512 states and 592 transitions. Second operand has 23 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 23 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) [2021-11-02 22:40:54,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:40:54,822 INFO L93 Difference]: Finished difference Result 789 states and 910 transitions. [2021-11-02 22:40:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-11-02 22:40:54,822 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 23 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 80 [2021-11-02 22:40:54,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:40:54,828 INFO L225 Difference]: With dead ends: 789 [2021-11-02 22:40:54,828 INFO L226 Difference]: Without dead ends: 788 [2021-11-02 22:40:54,833 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3734 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=2134, Invalid=7568, Unknown=0, NotChecked=0, Total=9702 [2021-11-02 22:40:54,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-11-02 22:40:54,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 604. [2021-11-02 22:40:54,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 603 states have (on average 1.1625207296849087) internal successors, (701), 603 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:40:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 701 transitions. [2021-11-02 22:40:54,976 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 701 transitions. Word has length 80 [2021-11-02 22:40:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:40:54,976 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 701 transitions. [2021-11-02 22:40:54,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.9545454545454546) internal successors, (87), 23 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) [2021-11-02 22:40:54,977 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 701 transitions. [2021-11-02 22:40:54,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 22:40:54,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:40:54,979 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 10, 9, 9, 9, 1, 1, 1] [2021-11-02 22:40:55,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-02 22:40:55,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-11-02 22:40:55,199 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:40:55,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:40:55,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1127260913, now seen corresponding path program 21 times [2021-11-02 22:40:55,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:40:55,200 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643516279] [2021-11-02 22:40:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:40:55,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:40:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:40:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 0 proven. 573 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-02 22:40:55,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:40:55,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643516279] [2021-11-02 22:40:55,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643516279] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:55,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262297983] [2021-11-02 22:40:55,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:40:55,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:40:55,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:40:55,428 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:40:55,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-02 22:40:55,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-11-02 22:40:55,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:40:55,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-02 22:40:55,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:40:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 299 proven. 175 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-02 22:40:56,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262297983] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:40:56,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:40:56,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12] total 27 [2021-11-02 22:40:56,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945249897] [2021-11-02 22:40:56,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:40:56,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:40:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:40:56,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:40:56,477 INFO L87 Difference]: Start difference. First operand 604 states and 701 transitions. Second operand has 28 states, 27 states have (on average 4.518518518518518) internal successors, (122), 28 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) [2021-11-02 22:41:08,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:41:08,233 INFO L93 Difference]: Finished difference Result 1740 states and 1995 transitions. [2021-11-02 22:41:08,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 271 states. [2021-11-02 22:41:08,234 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.518518518518518) internal successors, (122), 28 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 83 [2021-11-02 22:41:08,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:41:08,244 INFO L225 Difference]: With dead ends: 1740 [2021-11-02 22:41:08,244 INFO L226 Difference]: Without dead ends: 1739 [2021-11-02 22:41:08,256 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37921 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=10775, Invalid=73615, Unknown=0, NotChecked=0, Total=84390 [2021-11-02 22:41:08,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1739 states. [2021-11-02 22:41:08,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1739 to 677. [2021-11-02 22:41:08,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 1.1745562130177514) internal successors, (794), 676 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:08,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 794 transitions. [2021-11-02 22:41:08,453 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 794 transitions. Word has length 83 [2021-11-02 22:41:08,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:41:08,453 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 794 transitions. [2021-11-02 22:41:08,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.518518518518518) internal successors, (122), 28 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) [2021-11-02 22:41:08,454 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 794 transitions. [2021-11-02 22:41:08,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 22:41:08,456 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:41:08,457 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 11, 11, 11, 1, 1, 1] [2021-11-02 22:41:08,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:08,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:08,675 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)] === [2021-11-02 22:41:08,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:08,676 INFO L85 PathProgramCache]: Analyzing trace with hash -905951149, now seen corresponding path program 22 times [2021-11-02 22:41:08,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:08,676 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555325795] [2021-11-02 22:41:08,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:08,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:08,881 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 22:41:08,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:08,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555325795] [2021-11-02 22:41:08,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555325795] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:08,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329627751] [2021-11-02 22:41:08,882 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:41:08,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:08,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:08,883 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:08,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-02 22:41:09,443 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:41:09,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:41:09,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-02 22:41:09,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:09,830 INFO L134 CoverageAnalysis]: Checked inductivity of 596 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-02 22:41:09,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329627751] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:09,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:09,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 19 [2021-11-02 22:41:09,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620655163] [2021-11-02 22:41:09,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-02 22:41:09,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:09,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-02 22:41:09,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-11-02 22:41:09,832 INFO L87 Difference]: Start difference. First operand 677 states and 794 transitions. Second operand has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:11,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:41:11,406 INFO L93 Difference]: Finished difference Result 2310 states and 2659 transitions. [2021-11-02 22:41:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-11-02 22:41:11,406 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:41:11,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:41:11,419 INFO L225 Difference]: With dead ends: 2310 [2021-11-02 22:41:11,419 INFO L226 Difference]: Without dead ends: 2309 [2021-11-02 22:41:11,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1788 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1280, Invalid=4420, Unknown=0, NotChecked=0, Total=5700 [2021-11-02 22:41:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2021-11-02 22:41:11,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 705. [2021-11-02 22:41:11,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 705 states, 704 states have (on average 1.171875) internal successors, (825), 704 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:11,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 825 transitions. [2021-11-02 22:41:11,585 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 825 transitions. Word has length 85 [2021-11-02 22:41:11,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:41:11,585 INFO L470 AbstractCegarLoop]: Abstraction has 705 states and 825 transitions. [2021-11-02 22:41:11,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 20 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:11,586 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 825 transitions. [2021-11-02 22:41:11,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-11-02 22:41:11,589 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:41:11,589 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 12, 12, 12, 1, 1, 1] [2021-11-02 22:41:11,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:11,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-02 22:41:11,815 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:41:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash -130104560, now seen corresponding path program 23 times [2021-11-02 22:41:11,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:11,816 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750437777] [2021-11-02 22:41:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:11,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:12,057 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 692 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:41:12,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:12,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750437777] [2021-11-02 22:41:12,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750437777] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:12,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262116434] [2021-11-02 22:41:12,058 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:41:12,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:12,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:12,064 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:12,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-02 22:41:12,895 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2021-11-02 22:41:12,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:41:12,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:41:12,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 704 backedges. 0 proven. 692 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:41:13,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262116434] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:13,358 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:13,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 20 [2021-11-02 22:41:13,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265517436] [2021-11-02 22:41:13,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-02 22:41:13,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:13,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-02 22:41:13,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2021-11-02 22:41:13,360 INFO L87 Difference]: Start difference. First operand 705 states and 825 transitions. Second operand has 21 states, 20 states have (on average 4.9) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:15,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:41:15,304 INFO L93 Difference]: Finished difference Result 2679 states and 3088 transitions. [2021-11-02 22:41:15,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-11-02 22:41:15,305 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.9) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:41:15,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:41:15,317 INFO L225 Difference]: With dead ends: 2679 [2021-11-02 22:41:15,318 INFO L226 Difference]: Without dead ends: 2678 [2021-11-02 22:41:15,320 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2112 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1484, Invalid=5158, Unknown=0, NotChecked=0, Total=6642 [2021-11-02 22:41:15,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2678 states. [2021-11-02 22:41:15,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2678 to 743. [2021-11-02 22:41:15,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.1684636118598384) internal successors, (867), 742 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:15,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 867 transitions. [2021-11-02 22:41:15,547 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 867 transitions. Word has length 92 [2021-11-02 22:41:15,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:41:15,548 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 867 transitions. [2021-11-02 22:41:15,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.9) internal successors, (98), 21 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 867 transitions. [2021-11-02 22:41:15,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-02 22:41:15,552 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:41:15,552 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 13, 13, 13, 1, 1, 1] [2021-11-02 22:41:15,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:15,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:15,767 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)] === [2021-11-02 22:41:15,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:15,767 INFO L85 PathProgramCache]: Analyzing trace with hash -387896909, now seen corresponding path program 24 times [2021-11-02 22:41:15,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:15,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366211197] [2021-11-02 22:41:15,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:15,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:16,046 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 808 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 22:41:16,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:16,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366211197] [2021-11-02 22:41:16,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366211197] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:16,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822842805] [2021-11-02 22:41:16,047 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:41:16,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:16,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:16,052 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:16,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-02 22:41:16,700 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2021-11-02 22:41:16,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:41:16,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-02 22:41:16,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:17,120 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 0 proven. 808 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-02 22:41:17,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822842805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:17,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:17,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 21 [2021-11-02 22:41:17,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210517962] [2021-11-02 22:41:17,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-02 22:41:17,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:17,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-02 22:41:17,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-11-02 22:41:17,122 INFO L87 Difference]: Start difference. First operand 743 states and 867 transitions. Second operand has 22 states, 21 states have (on average 5.0) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:19,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:41:19,065 INFO L93 Difference]: Finished difference Result 3058 states and 3531 transitions. [2021-11-02 22:41:19,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-11-02 22:41:19,066 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.0) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2021-11-02 22:41:19,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:41:19,080 INFO L225 Difference]: With dead ends: 3058 [2021-11-02 22:41:19,080 INFO L226 Difference]: Without dead ends: 3057 [2021-11-02 22:41:19,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2463 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1703, Invalid=5953, Unknown=0, NotChecked=0, Total=7656 [2021-11-02 22:41:19,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-11-02 22:41:19,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 791. [2021-11-02 22:41:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 790 states have (on average 1.1658227848101266) internal successors, (921), 790 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 921 transitions. [2021-11-02 22:41:19,306 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 921 transitions. Word has length 99 [2021-11-02 22:41:19,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:41:19,306 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 921 transitions. [2021-11-02 22:41:19,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.0) internal successors, (105), 22 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:19,307 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 921 transitions. [2021-11-02 22:41:19,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-02 22:41:19,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:41:19,310 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 14, 14, 14, 1, 1, 1] [2021-11-02 22:41:19,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:19,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-02 22:41:19,523 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:41:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 977245616, now seen corresponding path program 25 times [2021-11-02 22:41:19,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:19,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716181508] [2021-11-02 22:41:19,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:19,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 0 proven. 933 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 22:41:19,784 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:19,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716181508] [2021-11-02 22:41:19,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716181508] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:19,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229183052] [2021-11-02 22:41:19,785 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:41:19,785 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:19,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:19,795 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:19,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-02 22:41:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:20,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-02 22:41:20,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:20,877 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 0 proven. 933 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-02 22:41:20,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229183052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:20,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:20,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 22 [2021-11-02 22:41:20,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892668162] [2021-11-02 22:41:20,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-02 22:41:20,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:20,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-02 22:41:20,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2021-11-02 22:41:20,887 INFO L87 Difference]: Start difference. First operand 791 states and 921 transitions. Second operand has 23 states, 22 states have (on average 5.090909090909091) internal successors, (112), 23 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) [2021-11-02 22:41:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:41:23,163 INFO L93 Difference]: Finished difference Result 3453 states and 3992 transitions. [2021-11-02 22:41:23,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-11-02 22:41:23,163 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.090909090909091) internal successors, (112), 23 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 106 [2021-11-02 22:41:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:41:23,180 INFO L225 Difference]: With dead ends: 3453 [2021-11-02 22:41:23,180 INFO L226 Difference]: Without dead ends: 3452 [2021-11-02 22:41:23,182 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2841 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1937, Invalid=6805, Unknown=0, NotChecked=0, Total=8742 [2021-11-02 22:41:23,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3452 states. [2021-11-02 22:41:23,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3452 to 852. [2021-11-02 22:41:23,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.164512338425382) internal successors, (991), 851 states have internal predecessors, (991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 991 transitions. [2021-11-02 22:41:23,382 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 991 transitions. Word has length 106 [2021-11-02 22:41:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:41:23,383 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 991 transitions. [2021-11-02 22:41:23,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.090909090909091) internal successors, (112), 23 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) [2021-11-02 22:41:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 991 transitions. [2021-11-02 22:41:23,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 22:41:23,386 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:41:23,387 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 10, 9, 9, 9, 1, 1, 1] [2021-11-02 22:41:23,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:23,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-11-02 22:41:23,615 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)] === [2021-11-02 22:41:23,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:23,616 INFO L85 PathProgramCache]: Analyzing trace with hash 485532311, now seen corresponding path program 26 times [2021-11-02 22:41:23,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:23,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324446327] [2021-11-02 22:41:23,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:23,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:23,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:23,794 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 602 proven. 261 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-11-02 22:41:23,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:23,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324446327] [2021-11-02 22:41:23,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324446327] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:23,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668169519] [2021-11-02 22:41:23,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:41:23,796 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:23,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:23,800 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:23,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-02 22:41:24,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:41:24,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:41:24,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:41:24,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 612 proven. 251 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-11-02 22:41:25,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668169519] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:25,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:25,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 24 [2021-11-02 22:41:25,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685805112] [2021-11-02 22:41:25,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 22:41:25,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:25,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 22:41:25,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:41:25,521 INFO L87 Difference]: Start difference. First operand 852 states and 991 transitions. Second operand has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 24 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:27,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:41:27,017 INFO L93 Difference]: Finished difference Result 1047 states and 1222 transitions. [2021-11-02 22:41:27,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-02 22:41:27,018 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 24 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:41:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:41:27,021 INFO L225 Difference]: With dead ends: 1047 [2021-11-02 22:41:27,021 INFO L226 Difference]: Without dead ends: 705 [2021-11-02 22:41:27,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=849, Invalid=5003, Unknown=0, NotChecked=0, Total=5852 [2021-11-02 22:41:27,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-11-02 22:41:27,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 694. [2021-11-02 22:41:27,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 1.1284271284271283) internal successors, (782), 693 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:27,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 782 transitions. [2021-11-02 22:41:27,150 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 782 transitions. Word has length 107 [2021-11-02 22:41:27,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:41:27,151 INFO L470 AbstractCegarLoop]: Abstraction has 694 states and 782 transitions. [2021-11-02 22:41:27,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 3.9583333333333335) internal successors, (95), 24 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:27,151 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 782 transitions. [2021-11-02 22:41:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-02 22:41:27,154 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:41:27,154 INFO L513 BasicCegarLoop]: trace histogram [22, 21, 21, 11, 10, 10, 10, 1, 1, 1] [2021-11-02 22:41:27,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:27,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:27,379 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:41:27,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:27,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1302897364, now seen corresponding path program 27 times [2021-11-02 22:41:27,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:27,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992697883] [2021-11-02 22:41:27,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:27,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 828 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-11-02 22:41:27,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:27,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992697883] [2021-11-02 22:41:27,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992697883] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:27,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564348083] [2021-11-02 22:41:27,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:41:27,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:27,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:27,568 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:27,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-02 22:41:28,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-02 22:41:28,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:41:28,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 22:41:28,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:29,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 551 proven. 211 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-11-02 22:41:29,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564348083] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:29,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:29,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 26 [2021-11-02 22:41:29,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675299755] [2021-11-02 22:41:29,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-02 22:41:29,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:29,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-02 22:41:29,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2021-11-02 22:41:29,098 INFO L87 Difference]: Start difference. First operand 694 states and 782 transitions. Second operand has 27 states, 26 states have (on average 4.038461538461538) internal successors, (105), 27 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:36,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:41:36,068 INFO L93 Difference]: Finished difference Result 1273 states and 1461 transitions. [2021-11-02 22:41:36,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2021-11-02 22:41:36,068 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 4.038461538461538) internal successors, (105), 27 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2021-11-02 22:41:36,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:41:36,074 INFO L225 Difference]: With dead ends: 1273 [2021-11-02 22:41:36,074 INFO L226 Difference]: Without dead ends: 1272 [2021-11-02 22:41:36,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14143 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=5021, Invalid=30135, Unknown=0, NotChecked=0, Total=35156 [2021-11-02 22:41:36,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2021-11-02 22:41:36,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 767. [2021-11-02 22:41:36,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 1.1370757180156659) internal successors, (871), 766 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 871 transitions. [2021-11-02 22:41:36,233 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 871 transitions. Word has length 108 [2021-11-02 22:41:36,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:41:36,234 INFO L470 AbstractCegarLoop]: Abstraction has 767 states and 871 transitions. [2021-11-02 22:41:36,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 4.038461538461538) internal successors, (105), 27 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 871 transitions. [2021-11-02 22:41:36,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-02 22:41:36,236 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:41:36,237 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 23, 10, 9, 9, 9, 1, 1, 1] [2021-11-02 22:41:36,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:36,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-11-02 22:41:36,452 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)] === [2021-11-02 22:41:36,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:36,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1503639605, now seen corresponding path program 28 times [2021-11-02 22:41:36,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:36,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598936528] [2021-11-02 22:41:36,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:36,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:36,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 590 proven. 476 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-11-02 22:41:36,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:36,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598936528] [2021-11-02 22:41:36,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598936528] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:36,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553345132] [2021-11-02 22:41:36,750 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:41:36,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:36,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:36,756 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:36,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-02 22:41:37,618 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:41:37,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:41:37,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-02 22:41:37,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1174 backedges. 143 proven. 977 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-11-02 22:41:38,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553345132] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:38,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:38,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2021-11-02 22:41:38,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179177097] [2021-11-02 22:41:38,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-02 22:41:38,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:38,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-02 22:41:38,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1219, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:41:38,859 INFO L87 Difference]: Start difference. First operand 767 states and 871 transitions. Second operand has 38 states, 38 states have (on average 3.9210526315789473) internal successors, (149), 38 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) [2021-11-02 22:41:44,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:41:44,584 INFO L93 Difference]: Finished difference Result 1935 states and 2234 transitions. [2021-11-02 22:41:44,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-11-02 22:41:44,584 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.9210526315789473) internal successors, (149), 38 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 110 [2021-11-02 22:41:44,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:41:44,592 INFO L225 Difference]: With dead ends: 1935 [2021-11-02 22:41:44,592 INFO L226 Difference]: Without dead ends: 1493 [2021-11-02 22:41:44,594 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5263 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3539, Invalid=15643, Unknown=0, NotChecked=0, Total=19182 [2021-11-02 22:41:44,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2021-11-02 22:41:44,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1138. [2021-11-02 22:41:44,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 1.106420404573439) internal successors, (1258), 1137 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1258 transitions. [2021-11-02 22:41:44,797 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1258 transitions. Word has length 110 [2021-11-02 22:41:44,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:41:44,797 INFO L470 AbstractCegarLoop]: Abstraction has 1138 states and 1258 transitions. [2021-11-02 22:41:44,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.9210526315789473) internal successors, (149), 38 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) [2021-11-02 22:41:44,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1258 transitions. [2021-11-02 22:41:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-02 22:41:44,801 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:41:44,801 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 15, 15, 15, 1, 1, 1] [2021-11-02 22:41:44,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-11-02 22:41:45,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-02 22:41:45,002 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:41:45,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:45,002 INFO L85 PathProgramCache]: Analyzing trace with hash 174859027, now seen corresponding path program 29 times [2021-11-02 22:41:45,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:45,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144927981] [2021-11-02 22:41:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:45,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 1067 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-02 22:41:45,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:45,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144927981] [2021-11-02 22:41:45,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144927981] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:45,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76278293] [2021-11-02 22:41:45,300 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:41:45,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:45,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:45,302 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:45,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-02 22:41:46,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 22:41:46,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:41:46,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 22:41:46,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1082 backedges. 0 proven. 1067 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-02 22:41:47,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76278293] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:47,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:47,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 23 [2021-11-02 22:41:47,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811478266] [2021-11-02 22:41:47,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 22:41:47,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:47,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 22:41:47,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=382, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:41:47,180 INFO L87 Difference]: Start difference. First operand 1138 states and 1258 transitions. Second operand has 24 states, 23 states have (on average 5.173913043478261) internal successors, (119), 24 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) [2021-11-02 22:41:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:41:49,666 INFO L93 Difference]: Finished difference Result 2805 states and 3106 transitions. [2021-11-02 22:41:49,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-11-02 22:41:49,667 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.173913043478261) internal successors, (119), 24 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 113 [2021-11-02 22:41:49,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:41:49,682 INFO L225 Difference]: With dead ends: 2805 [2021-11-02 22:41:49,682 INFO L226 Difference]: Without dead ends: 2804 [2021-11-02 22:41:49,685 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3246 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2186, Invalid=7714, Unknown=0, NotChecked=0, Total=9900 [2021-11-02 22:41:49,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-11-02 22:41:50,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1233. [2021-11-02 22:41:50,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 1.1047077922077921) internal successors, (1361), 1232 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1361 transitions. [2021-11-02 22:41:50,052 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1361 transitions. Word has length 113 [2021-11-02 22:41:50,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:41:50,052 INFO L470 AbstractCegarLoop]: Abstraction has 1233 states and 1361 transitions. [2021-11-02 22:41:50,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.173913043478261) internal successors, (119), 24 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) [2021-11-02 22:41:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1361 transitions. [2021-11-02 22:41:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-02 22:41:50,056 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:41:50,056 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 14, 13, 13, 13, 1, 1, 1] [2021-11-02 22:41:50,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-02 22:41:50,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-11-02 22:41:50,283 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)] === [2021-11-02 22:41:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:41:50,284 INFO L85 PathProgramCache]: Analyzing trace with hash -182028861, now seen corresponding path program 30 times [2021-11-02 22:41:50,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:41:50,284 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301195551] [2021-11-02 22:41:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:41:50,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:41:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:41:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 0 proven. 1022 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-11-02 22:41:50,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:41:50,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301195551] [2021-11-02 22:41:50,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301195551] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:50,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202826048] [2021-11-02 22:41:50,544 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:41:50,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:41:50,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:41:50,548 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:41:50,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-02 22:41:51,817 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 22 check-sat command(s) [2021-11-02 22:41:51,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:41:51,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-02 22:41:51,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:41:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1136 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-02 22:41:52,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202826048] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:41:52,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:41:52,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 25 [2021-11-02 22:41:52,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737143262] [2021-11-02 22:41:52,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-02 22:41:52,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:41:52,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-02 22:41:52,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=504, Unknown=0, NotChecked=0, Total=650 [2021-11-02 22:41:52,319 INFO L87 Difference]: Start difference. First operand 1233 states and 1361 transitions. Second operand has 26 states, 25 states have (on average 4.92) internal successors, (123), 26 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:41:59,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:41:59,561 INFO L93 Difference]: Finished difference Result 2598 states and 2876 transitions. [2021-11-02 22:41:59,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-02 22:41:59,562 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.92) internal successors, (123), 26 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 114 [2021-11-02 22:41:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:41:59,582 INFO L225 Difference]: With dead ends: 2598 [2021-11-02 22:41:59,582 INFO L226 Difference]: Without dead ends: 2597 [2021-11-02 22:41:59,586 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18136 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=6562, Invalid=37328, Unknown=0, NotChecked=0, Total=43890 [2021-11-02 22:41:59,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2597 states. [2021-11-02 22:42:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2597 to 1741. [2021-11-02 22:42:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1740 states have (on average 1.0988505747126436) internal successors, (1912), 1740 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 1912 transitions. [2021-11-02 22:42:00,071 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 1912 transitions. Word has length 114 [2021-11-02 22:42:00,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:00,072 INFO L470 AbstractCegarLoop]: Abstraction has 1741 states and 1912 transitions. [2021-11-02 22:42:00,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.92) internal successors, (123), 26 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:00,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 1912 transitions. [2021-11-02 22:42:00,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-02 22:42:00,077 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:00,077 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 16, 16, 16, 1, 1, 1] [2021-11-02 22:42:00,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-02 22:42:00,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:42:00,304 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:42:00,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:00,304 INFO L85 PathProgramCache]: Analyzing trace with hash 579555408, now seen corresponding path program 31 times [2021-11-02 22:42:00,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:00,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434446766] [2021-11-02 22:42:00,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:00,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 0 proven. 1210 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-02 22:42:00,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:00,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434446766] [2021-11-02 22:42:00,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434446766] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:00,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342068658] [2021-11-02 22:42:00,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:42:00,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:42:00,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:42:00,688 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:42:00,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-02 22:42:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:02,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-02 22:42:02,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:42:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 1226 backedges. 0 proven. 1210 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-02 22:42:02,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342068658] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:02,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:42:02,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 24 [2021-11-02 22:42:02,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54257632] [2021-11-02 22:42:02,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-02 22:42:02,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:02,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-02 22:42:02,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=412, Unknown=0, NotChecked=0, Total=600 [2021-11-02 22:42:02,625 INFO L87 Difference]: Start difference. First operand 1741 states and 1912 transitions. Second operand has 25 states, 24 states have (on average 5.25) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:05,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:05,509 INFO L93 Difference]: Finished difference Result 3118 states and 3450 transitions. [2021-11-02 22:42:05,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-11-02 22:42:05,510 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.25) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:42:05,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:05,524 INFO L225 Difference]: With dead ends: 3118 [2021-11-02 22:42:05,525 INFO L226 Difference]: Without dead ends: 3117 [2021-11-02 22:42:05,527 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3678 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2450, Invalid=8680, Unknown=0, NotChecked=0, Total=11130 [2021-11-02 22:42:05,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3117 states. [2021-11-02 22:42:06,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3117 to 1836. [2021-11-02 22:42:06,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1836 states, 1835 states have (on average 1.098092643051771) internal successors, (2015), 1835 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:06,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2015 transitions. [2021-11-02 22:42:06,009 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2015 transitions. Word has length 120 [2021-11-02 22:42:06,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:06,010 INFO L470 AbstractCegarLoop]: Abstraction has 1836 states and 2015 transitions. [2021-11-02 22:42:06,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.25) internal successors, (126), 25 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:06,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2015 transitions. [2021-11-02 22:42:06,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 22:42:06,015 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:06,015 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 15, 14, 14, 14, 1, 1, 1] [2021-11-02 22:42:06,052 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-11-02 22:42:06,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-02 22:42:06,216 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)] === [2021-11-02 22:42:06,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:06,217 INFO L85 PathProgramCache]: Analyzing trace with hash -521342938, now seen corresponding path program 32 times [2021-11-02 22:42:06,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:06,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832276106] [2021-11-02 22:42:06,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:06,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:06,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 0 proven. 1167 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-02 22:42:06,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:06,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832276106] [2021-11-02 22:42:06,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832276106] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:06,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155169998] [2021-11-02 22:42:06,511 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:42:06,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:42:06,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:42:06,513 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:42:06,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-02 22:42:07,654 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:42:07,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:42:07,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 22:42:07,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:42:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1282 backedges. 0 proven. 1252 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-02 22:42:08,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155169998] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:08,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:42:08,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 20] total 26 [2021-11-02 22:42:08,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485316144] [2021-11-02 22:42:08,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-02 22:42:08,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:08,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-02 22:42:08,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2021-11-02 22:42:08,474 INFO L87 Difference]: Start difference. First operand 1836 states and 2015 transitions. Second operand has 27 states, 26 states have (on average 5.0) internal successors, (130), 27 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:13,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:13,394 INFO L93 Difference]: Finished difference Result 2829 states and 3129 transitions. [2021-11-02 22:42:13,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2021-11-02 22:42:13,395 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.0) internal successors, (130), 27 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-02 22:42:13,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:13,405 INFO L225 Difference]: With dead ends: 2829 [2021-11-02 22:42:13,406 INFO L226 Difference]: Without dead ends: 2828 [2021-11-02 22:42:13,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8825 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=4208, Invalid=18442, Unknown=0, NotChecked=0, Total=22650 [2021-11-02 22:42:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2828 states. [2021-11-02 22:42:13,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2828 to 2056. [2021-11-02 22:42:13,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2055 states have (on average 1.0987834549878346) internal successors, (2258), 2055 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:14,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 2258 transitions. [2021-11-02 22:42:14,002 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 2258 transitions. Word has length 121 [2021-11-02 22:42:14,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:14,002 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 2258 transitions. [2021-11-02 22:42:14,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.0) internal successors, (130), 27 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:14,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 2258 transitions. [2021-11-02 22:42:14,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-02 22:42:14,006 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:14,006 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 17, 17, 17, 1, 1, 1] [2021-11-02 22:42:14,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-02 22:42:14,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-02 22:42:14,207 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:42:14,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash -820562829, now seen corresponding path program 33 times [2021-11-02 22:42:14,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:14,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951424713] [2021-11-02 22:42:14,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:14,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:14,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:14,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 0 proven. 1362 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-02 22:42:14,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:14,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951424713] [2021-11-02 22:42:14,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951424713] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:14,605 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165841848] [2021-11-02 22:42:14,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:42:14,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:42:14,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:42:14,607 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:42:14,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-02 22:42:16,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 26 check-sat command(s) [2021-11-02 22:42:16,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:42:16,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-02 22:42:16,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:42:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 0 proven. 1362 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-02 22:42:16,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165841848] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:16,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:42:16,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 25 [2021-11-02 22:42:16,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335792801] [2021-11-02 22:42:16,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-02 22:42:16,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:16,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-02 22:42:16,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=443, Unknown=0, NotChecked=0, Total=650 [2021-11-02 22:42:16,637 INFO L87 Difference]: Start difference. First operand 2056 states and 2258 transitions. Second operand has 26 states, 25 states have (on average 5.32) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:19,747 INFO L93 Difference]: Finished difference Result 3451 states and 3818 transitions. [2021-11-02 22:42:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-02 22:42:19,748 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 5.32) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:42:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:19,755 INFO L225 Difference]: With dead ends: 3451 [2021-11-02 22:42:19,755 INFO L226 Difference]: Without dead ends: 3450 [2021-11-02 22:42:19,757 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4137 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2729, Invalid=9703, Unknown=0, NotChecked=0, Total=12432 [2021-11-02 22:42:19,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3450 states. [2021-11-02 22:42:20,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3450 to 2151. [2021-11-02 22:42:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2150 states have (on average 1.0981395348837208) internal successors, (2361), 2150 states have internal predecessors, (2361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:20,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 2361 transitions. [2021-11-02 22:42:20,251 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 2361 transitions. Word has length 127 [2021-11-02 22:42:20,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:20,251 INFO L470 AbstractCegarLoop]: Abstraction has 2151 states and 2361 transitions. [2021-11-02 22:42:20,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 5.32) internal successors, (133), 26 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:20,252 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 2361 transitions. [2021-11-02 22:42:20,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-02 22:42:20,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:20,255 INFO L513 BasicCegarLoop]: trace histogram [22, 21, 21, 16, 15, 15, 15, 1, 1, 1] [2021-11-02 22:42:20,286 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-11-02 22:42:20,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-02 22:42:20,456 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)] === [2021-11-02 22:42:20,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:20,456 INFO L85 PathProgramCache]: Analyzing trace with hash -975335325, now seen corresponding path program 34 times [2021-11-02 22:42:20,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:20,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836421593] [2021-11-02 22:42:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:20,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1437 backedges. 0 proven. 1321 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2021-11-02 22:42:20,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:20,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836421593] [2021-11-02 22:42:20,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836421593] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:20,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668950024] [2021-11-02 22:42:20,741 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:42:20,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:42:20,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:42:20,744 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:42:20,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-02 22:42:22,055 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:42:22,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:42:22,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-02 22:42:22,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:42:23,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1437 backedges. 519 proven. 888 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-02 22:42:23,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668950024] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:23,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:42:23,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24] total 42 [2021-11-02 22:42:23,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059598666] [2021-11-02 22:42:23,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-02 22:42:23,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:23,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-02 22:42:23,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1467, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:42:23,156 INFO L87 Difference]: Start difference. First operand 2151 states and 2361 transitions. Second operand has 42 states, 42 states have (on average 5.119047619047619) internal successors, (215), 42 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:29,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:29,290 INFO L93 Difference]: Finished difference Result 2683 states and 2977 transitions. [2021-11-02 22:42:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2021-11-02 22:42:29,290 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.119047619047619) internal successors, (215), 42 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-02 22:42:29,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:29,294 INFO L225 Difference]: With dead ends: 2683 [2021-11-02 22:42:29,294 INFO L226 Difference]: Without dead ends: 2316 [2021-11-02 22:42:29,297 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11167 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3430, Invalid=30242, Unknown=0, NotChecked=0, Total=33672 [2021-11-02 22:42:29,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2021-11-02 22:42:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2066. [2021-11-02 22:42:29,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2066 states, 2065 states have (on average 1.0920096852300243) internal successors, (2255), 2065 states have internal predecessors, (2255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:29,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2066 states to 2066 states and 2255 transitions. [2021-11-02 22:42:29,863 INFO L78 Accepts]: Start accepts. Automaton has 2066 states and 2255 transitions. Word has length 128 [2021-11-02 22:42:29,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:29,864 INFO L470 AbstractCegarLoop]: Abstraction has 2066 states and 2255 transitions. [2021-11-02 22:42:29,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.119047619047619) internal successors, (215), 42 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:29,865 INFO L276 IsEmpty]: Start isEmpty. Operand 2066 states and 2255 transitions. [2021-11-02 22:42:29,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-02 22:42:29,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:29,870 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 18, 18, 18, 1, 1, 1] [2021-11-02 22:42:29,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-02 22:42:30,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-11-02 22:42:30,083 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:42:30,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:30,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1075055888, now seen corresponding path program 35 times [2021-11-02 22:42:30,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:30,084 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779668572] [2021-11-02 22:42:30,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:30,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:30,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 0 proven. 1523 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-02 22:42:30,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:30,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779668572] [2021-11-02 22:42:30,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779668572] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:30,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630120681] [2021-11-02 22:42:30,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:42:30,532 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:42:30,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:42:30,534 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:42:30,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-02 22:42:32,072 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2021-11-02 22:42:32,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:42:32,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-02 22:42:32,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:42:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 1541 backedges. 0 proven. 1523 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-02 22:42:32,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630120681] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:32,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:42:32,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 26 [2021-11-02 22:42:32,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700991842] [2021-11-02 22:42:32,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-02 22:42:32,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:32,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-02 22:42:32,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2021-11-02 22:42:32,638 INFO L87 Difference]: Start difference. First operand 2066 states and 2255 transitions. Second operand has 27 states, 26 states have (on average 5.384615384615385) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:36,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:36,230 INFO L93 Difference]: Finished difference Result 3489 states and 3844 transitions. [2021-11-02 22:42:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2021-11-02 22:42:36,231 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.384615384615385) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-02 22:42:36,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:36,242 INFO L225 Difference]: With dead ends: 3489 [2021-11-02 22:42:36,243 INFO L226 Difference]: Without dead ends: 3488 [2021-11-02 22:42:36,245 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4623 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=3023, Invalid=10783, Unknown=0, NotChecked=0, Total=13806 [2021-11-02 22:42:36,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3488 states. [2021-11-02 22:42:36,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3488 to 2137. [2021-11-02 22:42:36,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2136 states have (on average 1.0903558052434457) internal successors, (2329), 2136 states have internal predecessors, (2329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2329 transitions. [2021-11-02 22:42:36,927 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2329 transitions. Word has length 134 [2021-11-02 22:42:36,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:36,927 INFO L470 AbstractCegarLoop]: Abstraction has 2137 states and 2329 transitions. [2021-11-02 22:42:36,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.384615384615385) internal successors, (140), 27 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:36,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2329 transitions. [2021-11-02 22:42:36,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-02 22:42:36,932 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:36,933 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 19, 19, 19, 1, 1, 1] [2021-11-02 22:42:36,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-11-02 22:42:37,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:42:37,134 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)] === [2021-11-02 22:42:37,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:37,134 INFO L85 PathProgramCache]: Analyzing trace with hash -791126573, now seen corresponding path program 36 times [2021-11-02 22:42:37,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:37,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617071911] [2021-11-02 22:42:37,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:37,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:37,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 0 proven. 1693 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 22:42:37,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:37,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617071911] [2021-11-02 22:42:37,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617071911] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:37,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021655338] [2021-11-02 22:42:37,551 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:42:37,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:42:37,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:42:37,552 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:42:37,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-02 22:42:39,066 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s) [2021-11-02 22:42:39,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:42:39,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-02 22:42:39,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:42:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1712 backedges. 0 proven. 1693 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-02 22:42:39,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021655338] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:39,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:42:39,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 27 [2021-11-02 22:42:39,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845084881] [2021-11-02 22:42:39,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-02 22:42:39,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-02 22:42:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=508, Unknown=0, NotChecked=0, Total=756 [2021-11-02 22:42:39,645 INFO L87 Difference]: Start difference. First operand 2137 states and 2329 transitions. Second operand has 28 states, 27 states have (on average 5.444444444444445) internal successors, (147), 28 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) [2021-11-02 22:42:43,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:43,614 INFO L93 Difference]: Finished difference Result 3795 states and 4188 transitions. [2021-11-02 22:42:43,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2021-11-02 22:42:43,615 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 5.444444444444445) internal successors, (147), 28 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 141 [2021-11-02 22:42:43,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:43,628 INFO L225 Difference]: With dead ends: 3795 [2021-11-02 22:42:43,628 INFO L226 Difference]: Without dead ends: 3794 [2021-11-02 22:42:43,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5136 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3332, Invalid=11920, Unknown=0, NotChecked=0, Total=15252 [2021-11-02 22:42:43,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2021-11-02 22:42:44,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 2221. [2021-11-02 22:42:44,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 2220 states have (on average 1.0891891891891892) internal successors, (2418), 2220 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:44,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2418 transitions. [2021-11-02 22:42:44,422 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2418 transitions. Word has length 141 [2021-11-02 22:42:44,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:44,422 INFO L470 AbstractCegarLoop]: Abstraction has 2221 states and 2418 transitions. [2021-11-02 22:42:44,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 5.444444444444445) internal successors, (147), 28 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) [2021-11-02 22:42:44,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2418 transitions. [2021-11-02 22:42:44,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-02 22:42:44,428 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:44,428 INFO L513 BasicCegarLoop]: trace histogram [25, 24, 24, 18, 17, 17, 17, 1, 1, 1] [2021-11-02 22:42:44,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-02 22:42:44,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-11-02 22:42:44,631 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:42:44,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:44,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1493381405, now seen corresponding path program 37 times [2021-11-02 22:42:44,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:44,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918703038] [2021-11-02 22:42:44,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:44,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:44,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 0 proven. 1670 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2021-11-02 22:42:44,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:44,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918703038] [2021-11-02 22:42:44,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918703038] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:44,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58118668] [2021-11-02 22:42:44,958 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:42:44,958 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:42:44,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:42:44,960 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:42:44,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-02 22:42:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:46,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-02 22:42:46,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:42:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 621 proven. 1205 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-02 22:42:47,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58118668] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:47,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:42:47,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26] total 45 [2021-11-02 22:42:47,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536292992] [2021-11-02 22:42:47,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-02 22:42:47,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:47,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-02 22:42:47,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1687, Unknown=0, NotChecked=0, Total=1980 [2021-11-02 22:42:47,999 INFO L87 Difference]: Start difference. First operand 2221 states and 2418 transitions. Second operand has 45 states, 45 states have (on average 5.2444444444444445) internal successors, (236), 45 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:54,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:42:54,563 INFO L93 Difference]: Finished difference Result 2739 states and 3009 transitions. [2021-11-02 22:42:54,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2021-11-02 22:42:54,564 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.2444444444444445) internal successors, (236), 45 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-02 22:42:54,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:42:54,570 INFO L225 Difference]: With dead ends: 2739 [2021-11-02 22:42:54,570 INFO L226 Difference]: Without dead ends: 2533 [2021-11-02 22:42:54,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13762 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=4074, Invalid=36932, Unknown=0, NotChecked=0, Total=41006 [2021-11-02 22:42:54,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2533 states. [2021-11-02 22:42:55,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2533 to 2161. [2021-11-02 22:42:55,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2161 states, 2160 states have (on average 1.089351851851852) internal successors, (2353), 2160 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:55,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2161 states to 2161 states and 2353 transitions. [2021-11-02 22:42:55,343 INFO L78 Accepts]: Start accepts. Automaton has 2161 states and 2353 transitions. Word has length 145 [2021-11-02 22:42:55,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:42:55,344 INFO L470 AbstractCegarLoop]: Abstraction has 2161 states and 2353 transitions. [2021-11-02 22:42:55,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.2444444444444445) internal successors, (236), 45 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:42:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2161 states and 2353 transitions. [2021-11-02 22:42:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-02 22:42:55,351 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:42:55,351 INFO L513 BasicCegarLoop]: trace histogram [28, 27, 27, 16, 15, 15, 15, 1, 1, 1] [2021-11-02 22:42:55,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-02 22:42:55,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-11-02 22:42:55,567 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)] === [2021-11-02 22:42:55,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:42:55,568 INFO L85 PathProgramCache]: Analyzing trace with hash 601409045, now seen corresponding path program 38 times [2021-11-02 22:42:55,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:42:55,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309753557] [2021-11-02 22:42:55,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:42:55,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:42:55,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:42:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 0 proven. 1666 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-11-02 22:42:55,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:42:55,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309753557] [2021-11-02 22:42:55,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309753557] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:55,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256631331] [2021-11-02 22:42:55,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:42:55,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:42:55,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:42:55,872 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:42:55,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-02 22:42:57,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:42:57,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:42:57,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-02 22:42:57,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:42:58,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1962 backedges. 1185 proven. 567 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-11-02 22:42:58,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256631331] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:42:58,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:42:58,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 39 [2021-11-02 22:42:58,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21324388] [2021-11-02 22:42:58,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-02 22:42:58,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:42:58,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-02 22:42:58,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1274, Unknown=0, NotChecked=0, Total=1482 [2021-11-02 22:42:58,718 INFO L87 Difference]: Start difference. First operand 2161 states and 2353 transitions. Second operand has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 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) [2021-11-02 22:43:05,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:05,390 INFO L93 Difference]: Finished difference Result 2586 states and 2820 transitions. [2021-11-02 22:43:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2021-11-02 22:43:05,399 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 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 146 [2021-11-02 22:43:05,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:05,404 INFO L225 Difference]: With dead ends: 2586 [2021-11-02 22:43:05,404 INFO L226 Difference]: Without dead ends: 2378 [2021-11-02 22:43:05,408 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9739 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3243, Invalid=26169, Unknown=0, NotChecked=0, Total=29412 [2021-11-02 22:43:05,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2021-11-02 22:43:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 1756. [2021-11-02 22:43:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1755 states have (on average 1.0883190883190883) internal successors, (1910), 1755 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:06,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 1910 transitions. [2021-11-02 22:43:06,006 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 1910 transitions. Word has length 146 [2021-11-02 22:43:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:06,006 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 1910 transitions. [2021-11-02 22:43:06,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.051282051282051) internal successors, (197), 39 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) [2021-11-02 22:43:06,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 1910 transitions. [2021-11-02 22:43:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-02 22:43:06,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:06,010 INFO L513 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 20, 20, 20, 1, 1, 1] [2021-11-02 22:43:06,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-11-02 22:43:06,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:43:06,211 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:43:06,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:06,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2007727504, now seen corresponding path program 39 times [2021-11-02 22:43:06,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:43:06,212 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723797866] [2021-11-02 22:43:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:06,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:43:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1872 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-02 22:43:06,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:43:06,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723797866] [2021-11-02 22:43:06,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723797866] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:06,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102298606] [2021-11-02 22:43:06,773 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:43:06,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:43:06,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:43:06,776 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:43:06,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-02 22:43:08,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 29 check-sat command(s) [2021-11-02 22:43:08,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:43:08,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-02 22:43:08,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1872 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-02 22:43:09,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102298606] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:09,063 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:43:09,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 28 [2021-11-02 22:43:09,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365243273] [2021-11-02 22:43:09,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-02 22:43:09,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:43:09,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-02 22:43:09,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=542, Unknown=0, NotChecked=0, Total=812 [2021-11-02 22:43:09,066 INFO L87 Difference]: Start difference. First operand 1756 states and 1910 transitions. Second operand has 29 states, 28 states have (on average 5.5) internal successors, (154), 29 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) [2021-11-02 22:43:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:13,006 INFO L93 Difference]: Finished difference Result 3372 states and 3688 transitions. [2021-11-02 22:43:13,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2021-11-02 22:43:13,007 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.5) internal successors, (154), 29 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 148 [2021-11-02 22:43:13,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:13,017 INFO L225 Difference]: With dead ends: 3372 [2021-11-02 22:43:13,017 INFO L226 Difference]: Without dead ends: 3371 [2021-11-02 22:43:13,019 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5676 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=3656, Invalid=13114, Unknown=0, NotChecked=0, Total=16770 [2021-11-02 22:43:13,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3371 states. [2021-11-02 22:43:13,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3371 to 1837. [2021-11-02 22:43:13,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1837 states, 1836 states have (on average 1.0860566448801743) internal successors, (1994), 1836 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:13,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 1994 transitions. [2021-11-02 22:43:13,665 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 1994 transitions. Word has length 148 [2021-11-02 22:43:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:13,666 INFO L470 AbstractCegarLoop]: Abstraction has 1837 states and 1994 transitions. [2021-11-02 22:43:13,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.5) internal successors, (154), 29 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) [2021-11-02 22:43:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 1994 transitions. [2021-11-02 22:43:13,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-02 22:43:13,670 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:13,670 INFO L513 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 21, 21, 21, 1, 1, 1] [2021-11-02 22:43:13,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-11-02 22:43:13,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:43:13,871 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)] === [2021-11-02 22:43:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:13,871 INFO L85 PathProgramCache]: Analyzing trace with hash 52797235, now seen corresponding path program 40 times [2021-11-02 22:43:13,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:43:13,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363327835] [2021-11-02 22:43:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:13,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:43:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2081 backedges. 0 proven. 2060 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-02 22:43:14,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:43:14,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363327835] [2021-11-02 22:43:14,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363327835] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:14,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150849369] [2021-11-02 22:43:14,303 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:43:14,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:43:14,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:43:14,305 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:43:14,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-02 22:43:15,863 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:43:15,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:43:15,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-02 22:43:15,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:16,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2081 backedges. 0 proven. 2060 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-02 22:43:16,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150849369] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:16,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:43:16,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 29 [2021-11-02 22:43:16,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487177230] [2021-11-02 22:43:16,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-02 22:43:16,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:43:16,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-02 22:43:16,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=577, Unknown=0, NotChecked=0, Total=870 [2021-11-02 22:43:16,448 INFO L87 Difference]: Start difference. First operand 1837 states and 1994 transitions. Second operand has 30 states, 29 states have (on average 5.551724137931035) internal successors, (161), 30 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:20,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:20,358 INFO L93 Difference]: Finished difference Result 3688 states and 4042 transitions. [2021-11-02 22:43:20,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-02 22:43:20,359 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 5.551724137931035) internal successors, (161), 30 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:43:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:20,363 INFO L225 Difference]: With dead ends: 3688 [2021-11-02 22:43:20,363 INFO L226 Difference]: Without dead ends: 3687 [2021-11-02 22:43:20,365 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6243 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=3995, Invalid=14365, Unknown=0, NotChecked=0, Total=18360 [2021-11-02 22:43:20,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2021-11-02 22:43:20,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 1931. [2021-11-02 22:43:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1931 states, 1930 states have (on average 1.0844559585492228) internal successors, (2093), 1930 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:20,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 2093 transitions. [2021-11-02 22:43:20,946 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 2093 transitions. Word has length 155 [2021-11-02 22:43:20,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:20,946 INFO L470 AbstractCegarLoop]: Abstraction has 1931 states and 2093 transitions. [2021-11-02 22:43:20,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 5.551724137931035) internal successors, (161), 30 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:20,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 2093 transitions. [2021-11-02 22:43:20,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-02 22:43:20,951 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:20,951 INFO L513 BasicCegarLoop]: trace histogram [24, 23, 23, 23, 22, 22, 22, 1, 1, 1] [2021-11-02 22:43:20,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:21,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-02 22:43:21,152 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:43:21,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:21,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1517031376, now seen corresponding path program 41 times [2021-11-02 22:43:21,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:43:21,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853681252] [2021-11-02 22:43:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:21,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:43:21,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-02 22:43:21,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:43:21,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853681252] [2021-11-02 22:43:21,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853681252] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:21,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647295621] [2021-11-02 22:43:21,656 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:43:21,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:43:21,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:43:21,657 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:43:21,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-02 22:43:23,448 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2021-11-02 22:43:23,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:43:23,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-02 22:43:23,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:23,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2279 backedges. 0 proven. 2257 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-02 22:43:24,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647295621] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:24,000 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:43:24,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 30 [2021-11-02 22:43:24,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634635579] [2021-11-02 22:43:24,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-02 22:43:24,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:43:24,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-02 22:43:24,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=613, Unknown=0, NotChecked=0, Total=930 [2021-11-02 22:43:24,001 INFO L87 Difference]: Start difference. First operand 1931 states and 2093 transitions. Second operand has 31 states, 30 states have (on average 5.6) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:28,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:28,343 INFO L93 Difference]: Finished difference Result 4020 states and 4416 transitions. [2021-11-02 22:43:28,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2021-11-02 22:43:28,345 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 5.6) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:43:28,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:28,349 INFO L225 Difference]: With dead ends: 4020 [2021-11-02 22:43:28,349 INFO L226 Difference]: Without dead ends: 4019 [2021-11-02 22:43:28,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6837 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4349, Invalid=15673, Unknown=0, NotChecked=0, Total=20022 [2021-11-02 22:43:28,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4019 states. [2021-11-02 22:43:28,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4019 to 2038. [2021-11-02 22:43:28,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 2037 states have (on average 1.0839469808541973) internal successors, (2208), 2037 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:28,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 2208 transitions. [2021-11-02 22:43:28,914 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 2208 transitions. Word has length 162 [2021-11-02 22:43:28,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:28,915 INFO L470 AbstractCegarLoop]: Abstraction has 2038 states and 2208 transitions. [2021-11-02 22:43:28,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 5.6) internal successors, (168), 31 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:28,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 2208 transitions. [2021-11-02 22:43:28,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-02 22:43:28,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:28,918 INFO L513 BasicCegarLoop]: trace histogram [28, 27, 27, 20, 19, 19, 19, 1, 1, 1] [2021-11-02 22:43:28,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-11-02 22:43:29,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-02 22:43:29,119 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)] === [2021-11-02 22:43:29,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:29,120 INFO L85 PathProgramCache]: Analyzing trace with hash 621986033, now seen corresponding path program 42 times [2021-11-02 22:43:29,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:43:29,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549947224] [2021-11-02 22:43:29,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:29,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:43:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2342 backedges. 0 proven. 2054 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2021-11-02 22:43:29,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:43:29,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549947224] [2021-11-02 22:43:29,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549947224] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:29,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626822870] [2021-11-02 22:43:29,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:43:29,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:43:29,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:43:29,439 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:43:29,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-02 22:43:31,160 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-11-02 22:43:31,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:43:31,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-02 22:43:31,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2342 backedges. 0 proven. 2299 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-02 22:43:31,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626822870] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:31,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:43:31,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25] total 31 [2021-11-02 22:43:31,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67386212] [2021-11-02 22:43:31,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-02 22:43:31,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:43:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-02 22:43:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:43:31,904 INFO L87 Difference]: Start difference. First operand 2038 states and 2208 transitions. Second operand has 32 states, 31 states have (on average 5.32258064516129) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:43,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:43,850 INFO L93 Difference]: Finished difference Result 3642 states and 3983 transitions. [2021-11-02 22:43:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 278 states. [2021-11-02 22:43:43,851 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.32258064516129) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:43:43,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:43,855 INFO L225 Difference]: With dead ends: 3642 [2021-11-02 22:43:43,855 INFO L226 Difference]: Without dead ends: 3641 [2021-11-02 22:43:43,863 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39121 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=13200, Invalid=77702, Unknown=0, NotChecked=0, Total=90902 [2021-11-02 22:43:43,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3641 states. [2021-11-02 22:43:44,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3641 to 2908. [2021-11-02 22:43:44,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2907 states have (on average 1.08703130374957) internal successors, (3160), 2907 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:44,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3160 transitions. [2021-11-02 22:43:44,878 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3160 transitions. Word has length 162 [2021-11-02 22:43:44,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:44,878 INFO L470 AbstractCegarLoop]: Abstraction has 2908 states and 3160 transitions. [2021-11-02 22:43:44,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.32258064516129) internal successors, (165), 32 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:44,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3160 transitions. [2021-11-02 22:43:44,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-02 22:43:44,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:44,885 INFO L513 BasicCegarLoop]: trace histogram [25, 24, 24, 24, 23, 23, 23, 1, 1, 1] [2021-11-02 22:43:44,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-11-02 22:43:45,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-11-02 22:43:45,099 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:43:45,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:45,100 INFO L85 PathProgramCache]: Analyzing trace with hash 318044307, now seen corresponding path program 43 times [2021-11-02 22:43:45,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:43:45,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022185934] [2021-11-02 22:43:45,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:45,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:43:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2486 backedges. 0 proven. 2463 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-02 22:43:45,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:43:45,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022185934] [2021-11-02 22:43:45,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022185934] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:45,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111069940] [2021-11-02 22:43:45,606 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:43:45,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:43:45,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:43:45,608 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:43:45,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-02 22:43:47,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:47,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-02 22:43:47,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2486 backedges. 0 proven. 2463 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-02 22:43:48,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111069940] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:48,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:43:48,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 31 [2021-11-02 22:43:48,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170344217] [2021-11-02 22:43:48,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-02 22:43:48,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:43:48,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-02 22:43:48,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=650, Unknown=0, NotChecked=0, Total=992 [2021-11-02 22:43:48,288 INFO L87 Difference]: Start difference. First operand 2908 states and 3160 transitions. Second operand has 32 states, 31 states have (on average 5.645161290322581) internal successors, (175), 32 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:53,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:43:53,629 INFO L93 Difference]: Finished difference Result 4265 states and 4680 transitions. [2021-11-02 22:43:53,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2021-11-02 22:43:53,630 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.645161290322581) internal successors, (175), 32 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-11-02 22:43:53,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:43:53,635 INFO L225 Difference]: With dead ends: 4265 [2021-11-02 22:43:53,635 INFO L226 Difference]: Without dead ends: 4264 [2021-11-02 22:43:53,637 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7458 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=4718, Invalid=17038, Unknown=0, NotChecked=0, Total=21756 [2021-11-02 22:43:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4264 states. [2021-11-02 22:43:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4264 to 3015. [2021-11-02 22:43:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 3014 states have (on average 1.0865958858659588) internal successors, (3275), 3014 states have internal predecessors, (3275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:54,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 3275 transitions. [2021-11-02 22:43:54,735 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 3275 transitions. Word has length 169 [2021-11-02 22:43:54,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:43:54,736 INFO L470 AbstractCegarLoop]: Abstraction has 3015 states and 3275 transitions. [2021-11-02 22:43:54,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.645161290322581) internal successors, (175), 32 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:43:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 3275 transitions. [2021-11-02 22:43:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-02 22:43:54,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:43:54,745 INFO L513 BasicCegarLoop]: trace histogram [29, 28, 28, 21, 20, 20, 20, 1, 1, 1] [2021-11-02 22:43:54,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-02 22:43:54,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-02 22:43:54,960 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)] === [2021-11-02 22:43:54,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:43:54,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1837905580, now seen corresponding path program 44 times [2021-11-02 22:43:54,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:43:54,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976534898] [2021-11-02 22:43:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:43:54,961 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:43:55,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:43:55,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2261 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-11-02 22:43:55,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:43:55,304 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976534898] [2021-11-02 22:43:55,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976534898] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:55,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446031933] [2021-11-02 22:43:55,307 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:43:55,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:43:55,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:43:55,309 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:43:55,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-02 22:43:57,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:43:57,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:43:57,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-02 22:43:57,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:43:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2506 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-02 22:43:58,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446031933] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:43:58,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:43:58,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 26] total 32 [2021-11-02 22:43:58,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589941651] [2021-11-02 22:43:58,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-02 22:43:58,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:43:58,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-02 22:43:58,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=853, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 22:43:58,356 INFO L87 Difference]: Start difference. First operand 3015 states and 3275 transitions. Second operand has 33 states, 32 states have (on average 5.375) internal successors, (172), 33 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) [2021-11-02 22:44:06,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:06,074 INFO L93 Difference]: Finished difference Result 3788 states and 4137 transitions. [2021-11-02 22:44:06,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2021-11-02 22:44:06,074 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.375) internal successors, (172), 33 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 169 [2021-11-02 22:44:06,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:06,079 INFO L225 Difference]: With dead ends: 3788 [2021-11-02 22:44:06,079 INFO L226 Difference]: Without dead ends: 3787 [2021-11-02 22:44:06,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17536 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=7890, Invalid=35166, Unknown=0, NotChecked=0, Total=43056 [2021-11-02 22:44:06,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2021-11-02 22:44:07,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3106. [2021-11-02 22:44:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3106 states, 3105 states have (on average 1.0885668276972624) internal successors, (3380), 3105 states have internal predecessors, (3380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:44:07,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3106 states to 3106 states and 3380 transitions. [2021-11-02 22:44:07,136 INFO L78 Accepts]: Start accepts. Automaton has 3106 states and 3380 transitions. Word has length 169 [2021-11-02 22:44:07,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:07,137 INFO L470 AbstractCegarLoop]: Abstraction has 3106 states and 3380 transitions. [2021-11-02 22:44:07,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.375) internal successors, (172), 33 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) [2021-11-02 22:44:07,137 INFO L276 IsEmpty]: Start isEmpty. Operand 3106 states and 3380 transitions. [2021-11-02 22:44:07,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-02 22:44:07,141 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:07,141 INFO L513 BasicCegarLoop]: trace histogram [26, 25, 25, 25, 24, 24, 24, 1, 1, 1] [2021-11-02 22:44:07,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-11-02 22:44:07,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:44:07,342 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:44:07,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:07,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1005538000, now seen corresponding path program 45 times [2021-11-02 22:44:07,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:44:07,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363718196] [2021-11-02 22:44:07,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:44:07,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:44:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:44:07,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2702 backedges. 0 proven. 2678 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 22:44:07,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:44:07,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363718196] [2021-11-02 22:44:07,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363718196] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:44:07,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494953638] [2021-11-02 22:44:07,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:44:07,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:44:07,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:44:07,885 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:44:07,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-02 22:44:10,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2021-11-02 22:44:10,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:44:10,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-02 22:44:10,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2702 backedges. 0 proven. 2678 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-02 22:44:10,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494953638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:44:10,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:44:10,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 32 [2021-11-02 22:44:10,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292920658] [2021-11-02 22:44:10,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-02 22:44:10,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:44:10,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-02 22:44:10,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=688, Unknown=0, NotChecked=0, Total=1056 [2021-11-02 22:44:10,840 INFO L87 Difference]: Start difference. First operand 3106 states and 3380 transitions. Second operand has 33 states, 32 states have (on average 5.6875) internal successors, (182), 33 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) [2021-11-02 22:44:15,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:15,757 INFO L93 Difference]: Finished difference Result 4534 states and 4975 transitions. [2021-11-02 22:44:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2021-11-02 22:44:15,758 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 5.6875) internal successors, (182), 33 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 176 [2021-11-02 22:44:15,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:15,763 INFO L225 Difference]: With dead ends: 4534 [2021-11-02 22:44:15,763 INFO L226 Difference]: Without dead ends: 4533 [2021-11-02 22:44:15,765 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=5102, Invalid=18460, Unknown=0, NotChecked=0, Total=23562 [2021-11-02 22:44:15,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4533 states. [2021-11-02 22:44:16,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4533 to 3213. [2021-11-02 22:44:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3213 states, 3212 states have (on average 1.088107098381071) internal successors, (3495), 3212 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:44:16,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3213 states to 3213 states and 3495 transitions. [2021-11-02 22:44:16,822 INFO L78 Accepts]: Start accepts. Automaton has 3213 states and 3495 transitions. Word has length 176 [2021-11-02 22:44:16,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:16,823 INFO L470 AbstractCegarLoop]: Abstraction has 3213 states and 3495 transitions. [2021-11-02 22:44:16,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 5.6875) internal successors, (182), 33 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) [2021-11-02 22:44:16,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3213 states and 3495 transitions. [2021-11-02 22:44:16,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-11-02 22:44:16,830 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:16,830 INFO L513 BasicCegarLoop]: trace histogram [30, 29, 29, 22, 21, 21, 21, 1, 1, 1] [2021-11-02 22:44:16,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-02 22:44:17,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:44:17,055 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)] === [2021-11-02 22:44:17,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:17,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1150411887, now seen corresponding path program 46 times [2021-11-02 22:44:17,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:44:17,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2911905] [2021-11-02 22:44:17,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:44:17,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:44:17,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:44:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2767 backedges. 0 proven. 2477 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2021-11-02 22:44:17,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:44:17,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2911905] [2021-11-02 22:44:17,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2911905] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:44:17,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923381597] [2021-11-02 22:44:17,409 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:44:17,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:44:17,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:44:17,411 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:44:17,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-02 22:44:19,477 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:44:19,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:44:19,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-02 22:44:19,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2767 backedges. 977 proven. 1746 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-02 22:44:21,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923381597] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:44:21,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:44:21,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30] total 52 [2021-11-02 22:44:21,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915644382] [2021-11-02 22:44:21,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-11-02 22:44:21,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:44:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-11-02 22:44:21,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=404, Invalid=2248, Unknown=0, NotChecked=0, Total=2652 [2021-11-02 22:44:21,021 INFO L87 Difference]: Start difference. First operand 3213 states and 3495 transitions. Second operand has 52 states, 52 states have (on average 5.480769230769231) internal successors, (285), 52 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:44:29,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:29,618 INFO L93 Difference]: Finished difference Result 3735 states and 4090 transitions. [2021-11-02 22:44:29,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2021-11-02 22:44:29,619 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.480769230769231) internal successors, (285), 52 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2021-11-02 22:44:29,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:29,623 INFO L225 Difference]: With dead ends: 3735 [2021-11-02 22:44:29,623 INFO L226 Difference]: Without dead ends: 3482 [2021-11-02 22:44:29,626 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20304 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=5620, Invalid=53672, Unknown=0, NotChecked=0, Total=59292 [2021-11-02 22:44:29,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2021-11-02 22:44:30,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3127. [2021-11-02 22:44:30,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3127 states, 3126 states have (on average 1.0873320537428024) internal successors, (3399), 3126 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:44:30,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3127 states to 3127 states and 3399 transitions. [2021-11-02 22:44:30,731 INFO L78 Accepts]: Start accepts. Automaton has 3127 states and 3399 transitions. Word has length 176 [2021-11-02 22:44:30,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:30,732 INFO L470 AbstractCegarLoop]: Abstraction has 3127 states and 3399 transitions. [2021-11-02 22:44:30,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.480769230769231) internal successors, (285), 52 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:44:30,732 INFO L276 IsEmpty]: Start isEmpty. Operand 3127 states and 3399 transitions. [2021-11-02 22:44:30,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-02 22:44:30,737 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:30,737 INFO L513 BasicCegarLoop]: trace histogram [27, 26, 26, 26, 25, 25, 25, 1, 1, 1] [2021-11-02 22:44:30,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-02 22:44:30,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:44:30,938 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:44:30,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash -960730637, now seen corresponding path program 47 times [2021-11-02 22:44:30,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:44:30,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92566326] [2021-11-02 22:44:30,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:44:30,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:44:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:44:31,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2927 backedges. 0 proven. 2902 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-02 22:44:31,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:44:31,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92566326] [2021-11-02 22:44:31,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92566326] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:44:31,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062729171] [2021-11-02 22:44:31,507 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:44:31,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:44:31,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:44:31,508 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:44:31,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-02 22:44:33,700 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 37 check-sat command(s) [2021-11-02 22:44:33,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:44:33,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-02 22:44:33,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:34,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2927 backedges. 0 proven. 2902 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-02 22:44:34,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062729171] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:44:34,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:44:34,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 33 [2021-11-02 22:44:34,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987785378] [2021-11-02 22:44:34,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:44:34,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:44:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:44:34,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=727, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:44:34,384 INFO L87 Difference]: Start difference. First operand 3127 states and 3399 transitions. Second operand has 34 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 34 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) [2021-11-02 22:44:39,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:39,872 INFO L93 Difference]: Finished difference Result 4814 states and 5275 transitions. [2021-11-02 22:44:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2021-11-02 22:44:39,873 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 34 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 183 [2021-11-02 22:44:39,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:39,878 INFO L225 Difference]: With dead ends: 4814 [2021-11-02 22:44:39,878 INFO L226 Difference]: Without dead ends: 4813 [2021-11-02 22:44:39,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8781 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5501, Invalid=19939, Unknown=0, NotChecked=0, Total=25440 [2021-11-02 22:44:39,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4813 states. [2021-11-02 22:44:40,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4813 to 3231. [2021-11-02 22:44:40,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 3230 states have (on average 1.0860681114551083) internal successors, (3508), 3230 states have internal predecessors, (3508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:44:40,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 3508 transitions. [2021-11-02 22:44:40,988 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 3508 transitions. Word has length 183 [2021-11-02 22:44:40,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:40,989 INFO L470 AbstractCegarLoop]: Abstraction has 3231 states and 3508 transitions. [2021-11-02 22:44:40,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 5.7272727272727275) internal successors, (189), 34 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) [2021-11-02 22:44:40,989 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 3508 transitions. [2021-11-02 22:44:40,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-11-02 22:44:40,993 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:40,994 INFO L513 BasicCegarLoop]: trace histogram [28, 27, 27, 27, 26, 26, 26, 1, 1, 1] [2021-11-02 22:44:41,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-02 22:44:41,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:44:41,195 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)] === [2021-11-02 22:44:41,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:41,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1669827952, now seen corresponding path program 48 times [2021-11-02 22:44:41,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:44:41,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688979203] [2021-11-02 22:44:41,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:44:41,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:44:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:44:41,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3161 backedges. 0 proven. 3135 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-02 22:44:41,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:44:41,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688979203] [2021-11-02 22:44:41,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688979203] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:44:41,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141044556] [2021-11-02 22:44:41,774 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:44:41,774 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:44:41,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:44:41,775 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:44:41,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-02 22:44:43,932 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 38 check-sat command(s) [2021-11-02 22:44:43,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:44:43,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-02 22:44:43,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:44,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3161 backedges. 0 proven. 3135 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-02 22:44:44,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141044556] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:44:44,701 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:44:44,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 34 [2021-11-02 22:44:44,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173512870] [2021-11-02 22:44:44,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-02 22:44:44,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:44:44,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-02 22:44:44,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=767, Unknown=0, NotChecked=0, Total=1190 [2021-11-02 22:44:44,703 INFO L87 Difference]: Start difference. First operand 3231 states and 3508 transitions. Second operand has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 35 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:44:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:44:50,511 INFO L93 Difference]: Finished difference Result 5156 states and 5659 transitions. [2021-11-02 22:44:50,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2021-11-02 22:44:50,512 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 35 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:44:50,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:44:50,516 INFO L225 Difference]: With dead ends: 5156 [2021-11-02 22:44:50,516 INFO L226 Difference]: Without dead ends: 5155 [2021-11-02 22:44:50,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9483 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=5915, Invalid=21475, Unknown=0, NotChecked=0, Total=27390 [2021-11-02 22:44:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5155 states. [2021-11-02 22:44:51,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5155 to 3348. [2021-11-02 22:44:51,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3348 states, 3347 states have (on average 1.0854496564087242) internal successors, (3633), 3347 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:44:51,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3348 states to 3348 states and 3633 transitions. [2021-11-02 22:44:51,583 INFO L78 Accepts]: Start accepts. Automaton has 3348 states and 3633 transitions. Word has length 190 [2021-11-02 22:44:51,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:44:51,584 INFO L470 AbstractCegarLoop]: Abstraction has 3348 states and 3633 transitions. [2021-11-02 22:44:51,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 5.764705882352941) internal successors, (196), 35 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:44:51,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3348 states and 3633 transitions. [2021-11-02 22:44:51,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-11-02 22:44:51,591 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:44:51,592 INFO L513 BasicCegarLoop]: trace histogram [33, 32, 32, 24, 23, 23, 23, 1, 1, 1] [2021-11-02 22:44:51,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-02 22:44:51,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:44:51,807 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:44:51,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:44:51,808 INFO L85 PathProgramCache]: Analyzing trace with hash 655009995, now seen corresponding path program 49 times [2021-11-02 22:44:51,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:44:51,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961877622] [2021-11-02 22:44:51,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:44:51,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:44:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:44:52,231 INFO L134 CoverageAnalysis]: Checked inductivity of 3346 backedges. 0 proven. 2940 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-11-02 22:44:52,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:44:52,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961877622] [2021-11-02 22:44:52,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961877622] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:44:52,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349343048] [2021-11-02 22:44:52,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:44:52,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:44:52,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:44:52,234 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:44:52,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-02 22:44:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:44:54,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-02 22:44:54,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:44:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3346 backedges. 1115 proven. 2181 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-02 22:44:56,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349343048] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:44:56,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:44:56,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 32] total 55 [2021-11-02 22:44:56,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19534356] [2021-11-02 22:44:56,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-11-02 22:44:56,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:44:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-11-02 22:44:56,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=2518, Unknown=0, NotChecked=0, Total=2970 [2021-11-02 22:44:56,169 INFO L87 Difference]: Start difference. First operand 3348 states and 3633 transitions. Second operand has 55 states, 55 states have (on average 5.5636363636363635) internal successors, (306), 55 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:05,465 INFO L93 Difference]: Finished difference Result 3916 states and 4273 transitions. [2021-11-02 22:45:05,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2021-11-02 22:45:05,466 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 5.5636363636363635) internal successors, (306), 55 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 193 [2021-11-02 22:45:05,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:05,471 INFO L225 Difference]: With dead ends: 3916 [2021-11-02 22:45:05,471 INFO L226 Difference]: Without dead ends: 3663 [2021-11-02 22:45:05,477 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23760 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=6430, Invalid=62476, Unknown=0, NotChecked=0, Total=68906 [2021-11-02 22:45:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2021-11-02 22:45:06,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 3252. [2021-11-02 22:45:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3252 states, 3251 states have (on average 1.0848969547831437) internal successors, (3527), 3251 states have internal predecessors, (3527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:06,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 3527 transitions. [2021-11-02 22:45:06,617 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 3527 transitions. Word has length 193 [2021-11-02 22:45:06,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:06,618 INFO L470 AbstractCegarLoop]: Abstraction has 3252 states and 3527 transitions. [2021-11-02 22:45:06,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 5.5636363636363635) internal successors, (306), 55 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:06,618 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 3527 transitions. [2021-11-02 22:45:06,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-02 22:45:06,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:06,626 INFO L513 BasicCegarLoop]: trace histogram [29, 28, 28, 28, 27, 27, 27, 1, 1, 1] [2021-11-02 22:45:06,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-02 22:45:06,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-11-02 22:45:06,829 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)] === [2021-11-02 22:45:06,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:06,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1584526163, now seen corresponding path program 50 times [2021-11-02 22:45:06,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:06,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61772228] [2021-11-02 22:45:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:06,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:07,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-02 22:45:07,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:07,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61772228] [2021-11-02 22:45:07,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61772228] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:45:07,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915496192] [2021-11-02 22:45:07,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:45:07,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:45:07,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:45:07,392 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:45:07,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-02 22:45:09,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:45:09,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:45:09,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-02 22:45:09,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:45:10,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3404 backedges. 0 proven. 3377 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-11-02 22:45:10,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915496192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:45:10,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:45:10,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 35 [2021-11-02 22:45:10,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783589907] [2021-11-02 22:45:10,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-02 22:45:10,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:10,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-02 22:45:10,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=452, Invalid=808, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 22:45:10,391 INFO L87 Difference]: Start difference. First operand 3252 states and 3527 transitions. Second operand has 36 states, 35 states have (on average 5.8) internal successors, (203), 36 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:16,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:16,776 INFO L93 Difference]: Finished difference Result 5446 states and 5969 transitions. [2021-11-02 22:45:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2021-11-02 22:45:16,776 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 5.8) internal successors, (203), 36 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:45:16,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:16,783 INFO L225 Difference]: With dead ends: 5446 [2021-11-02 22:45:16,783 INFO L226 Difference]: Without dead ends: 5445 [2021-11-02 22:45:16,787 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10212 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=6344, Invalid=23068, Unknown=0, NotChecked=0, Total=29412 [2021-11-02 22:45:16,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5445 states. [2021-11-02 22:45:18,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5445 to 3366. [2021-11-02 22:45:18,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3366 states, 3365 states have (on average 1.0835066864784546) internal successors, (3646), 3365 states have internal predecessors, (3646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:18,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 3646 transitions. [2021-11-02 22:45:18,056 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 3646 transitions. Word has length 197 [2021-11-02 22:45:18,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:18,056 INFO L470 AbstractCegarLoop]: Abstraction has 3366 states and 3646 transitions. [2021-11-02 22:45:18,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 5.8) internal successors, (203), 36 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:18,057 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 3646 transitions. [2021-11-02 22:45:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-02 22:45:18,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:18,062 INFO L513 BasicCegarLoop]: trace histogram [37, 36, 36, 22, 21, 21, 21, 1, 1, 1] [2021-11-02 22:45:18,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-11-02 22:45:18,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-11-02 22:45:18,262 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:45:18,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:18,263 INFO L85 PathProgramCache]: Analyzing trace with hash 878804573, now seen corresponding path program 51 times [2021-11-02 22:45:18,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:18,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64740822] [2021-11-02 22:45:18,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:18,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:18,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 0 proven. 2893 refuted. 0 times theorem prover too weak. 707 trivial. 0 not checked. [2021-11-02 22:45:18,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:18,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64740822] [2021-11-02 22:45:18,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64740822] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:45:18,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505778571] [2021-11-02 22:45:18,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:45:18,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:45:18,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:45:18,588 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:45:18,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-02 22:45:20,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-11-02 22:45:20,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:45:20,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-02 22:45:20,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:45:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3600 backedges. 1587 proven. 349 refuted. 0 times theorem prover too weak. 1664 trivial. 0 not checked. [2021-11-02 22:45:21,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505778571] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:45:21,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:45:21,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14] total 35 [2021-11-02 22:45:21,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816528896] [2021-11-02 22:45:21,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-02 22:45:21,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:21,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-02 22:45:21,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=1079, Unknown=0, NotChecked=0, Total=1260 [2021-11-02 22:45:21,832 INFO L87 Difference]: Start difference. First operand 3366 states and 3646 transitions. Second operand has 36 states, 35 states have (on average 4.8) internal successors, (168), 36 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:49,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:45:49,771 INFO L93 Difference]: Finished difference Result 8704 states and 9674 transitions. [2021-11-02 22:45:49,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 425 states. [2021-11-02 22:45:49,772 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.8) internal successors, (168), 36 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:45:49,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:45:49,786 INFO L225 Difference]: With dead ends: 8704 [2021-11-02 22:45:49,787 INFO L226 Difference]: Without dead ends: 8703 [2021-11-02 22:45:49,800 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 450 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92816 ImplicationChecksByTransitivity, 22.8s TimeCoverageRelationStatistics Valid=23519, Invalid=180333, Unknown=0, NotChecked=0, Total=203852 [2021-11-02 22:45:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8703 states. [2021-11-02 22:45:51,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8703 to 3351. [2021-11-02 22:45:51,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3351 states, 3350 states have (on average 1.0850746268656717) internal successors, (3635), 3350 states have internal predecessors, (3635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:51,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 3635 transitions. [2021-11-02 22:45:51,123 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 3635 transitions. Word has length 197 [2021-11-02 22:45:51,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:45:51,124 INFO L470 AbstractCegarLoop]: Abstraction has 3351 states and 3635 transitions. [2021-11-02 22:45:51,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.8) internal successors, (168), 36 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:45:51,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 3635 transitions. [2021-11-02 22:45:51,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-11-02 22:45:51,129 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:45:51,129 INFO L513 BasicCegarLoop]: trace histogram [30, 29, 29, 29, 28, 28, 28, 1, 1, 1] [2021-11-02 22:45:51,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-11-02 22:45:51,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-11-02 22:45:51,330 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)] === [2021-11-02 22:45:51,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:45:51,330 INFO L85 PathProgramCache]: Analyzing trace with hash 463910928, now seen corresponding path program 52 times [2021-11-02 22:45:51,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:45:51,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137453542] [2021-11-02 22:45:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:45:51,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:45:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:45:51,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3656 backedges. 0 proven. 3628 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-02 22:45:51,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:45:51,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137453542] [2021-11-02 22:45:51,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137453542] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:45:51,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375813350] [2021-11-02 22:45:51,923 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:45:51,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:45:51,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:45:51,924 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:45:51,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-02 22:45:54,396 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:45:54,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:45:54,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:45:54,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:45:55,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3656 backedges. 0 proven. 3628 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-02 22:45:55,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375813350] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:45:55,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:45:55,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 36 [2021-11-02 22:45:55,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859543966] [2021-11-02 22:45:55,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-02 22:45:55,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:45:55,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-02 22:45:55,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=482, Invalid=850, Unknown=0, NotChecked=0, Total=1332 [2021-11-02 22:45:55,092 INFO L87 Difference]: Start difference. First operand 3351 states and 3635 transitions. Second operand has 37 states, 36 states have (on average 5.833333333333333) internal successors, (210), 37 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:46:04,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:04,083 INFO L93 Difference]: Finished difference Result 8994 states and 10016 transitions. [2021-11-02 22:46:04,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2021-11-02 22:46:04,083 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 5.833333333333333) internal successors, (210), 37 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2021-11-02 22:46:04,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:04,099 INFO L225 Difference]: With dead ends: 8994 [2021-11-02 22:46:04,099 INFO L226 Difference]: Without dead ends: 8993 [2021-11-02 22:46:04,104 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10968 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=6788, Invalid=24718, Unknown=0, NotChecked=0, Total=31506 [2021-11-02 22:46:04,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8993 states. [2021-11-02 22:46:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8993 to 3478. [2021-11-02 22:46:05,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3478 states, 3477 states have (on average 1.084268047167098) internal successors, (3770), 3477 states have internal predecessors, (3770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:46:05,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3478 states to 3478 states and 3770 transitions. [2021-11-02 22:46:05,569 INFO L78 Accepts]: Start accepts. Automaton has 3478 states and 3770 transitions. Word has length 204 [2021-11-02 22:46:05,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:05,569 INFO L470 AbstractCegarLoop]: Abstraction has 3478 states and 3770 transitions. [2021-11-02 22:46:05,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 5.833333333333333) internal successors, (210), 37 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:46:05,570 INFO L276 IsEmpty]: Start isEmpty. Operand 3478 states and 3770 transitions. [2021-11-02 22:46:05,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-11-02 22:46:05,574 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:05,575 INFO L513 BasicCegarLoop]: trace histogram [36, 35, 35, 26, 25, 25, 25, 1, 1, 1] [2021-11-02 22:46:05,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-11-02 22:46:05,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:05,775 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:46:05,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:05,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1879037665, now seen corresponding path program 53 times [2021-11-02 22:46:05,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:05,776 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421538677] [2021-11-02 22:46:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:05,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 0 proven. 3438 refuted. 0 times theorem prover too weak. 542 trivial. 0 not checked. [2021-11-02 22:46:06,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:06,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421538677] [2021-11-02 22:46:06,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421538677] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:06,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753746446] [2021-11-02 22:46:06,189 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:46:06,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:06,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:06,190 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:46:06,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-02 22:46:08,793 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 41 check-sat command(s) [2021-11-02 22:46:08,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:46:08,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-02 22:46:08,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:46:10,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3980 backedges. 1242 proven. 2683 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-02 22:46:10,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753746446] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:10,816 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:46:10,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 35] total 59 [2021-11-02 22:46:10,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375699061] [2021-11-02 22:46:10,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-02 22:46:10,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:10,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-02 22:46:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=2914, Unknown=0, NotChecked=0, Total=3422 [2021-11-02 22:46:10,819 INFO L87 Difference]: Start difference. First operand 3478 states and 3770 transitions. Second operand has 59 states, 59 states have (on average 5.5423728813559325) internal successors, (327), 59 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) [2021-11-02 22:46:23,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:23,377 INFO L93 Difference]: Finished difference Result 5209 states and 5723 transitions. [2021-11-02 22:46:23,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2021-11-02 22:46:23,377 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 5.5423728813559325) internal successors, (327), 59 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) Word has length 210 [2021-11-02 22:46:23,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:23,382 INFO L225 Difference]: With dead ends: 5209 [2021-11-02 22:46:23,383 INFO L226 Difference]: Without dead ends: 4674 [2021-11-02 22:46:23,387 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28846 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=7739, Invalid=74917, Unknown=0, NotChecked=0, Total=82656 [2021-11-02 22:46:23,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4674 states. [2021-11-02 22:46:24,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4674 to 3372. [2021-11-02 22:46:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3372 states, 3371 states have (on average 1.0839513497478492) internal successors, (3654), 3371 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:46:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3372 states to 3372 states and 3654 transitions. [2021-11-02 22:46:24,633 INFO L78 Accepts]: Start accepts. Automaton has 3372 states and 3654 transitions. Word has length 210 [2021-11-02 22:46:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:24,634 INFO L470 AbstractCegarLoop]: Abstraction has 3372 states and 3654 transitions. [2021-11-02 22:46:24,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 5.5423728813559325) internal successors, (327), 59 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) [2021-11-02 22:46:24,634 INFO L276 IsEmpty]: Start isEmpty. Operand 3372 states and 3654 transitions. [2021-11-02 22:46:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-02 22:46:24,640 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:24,641 INFO L513 BasicCegarLoop]: trace histogram [31, 30, 30, 30, 29, 29, 29, 1, 1, 1] [2021-11-02 22:46:24,681 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-11-02 22:46:24,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-02 22:46:24,847 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)] === [2021-11-02 22:46:24,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash -208956237, now seen corresponding path program 54 times [2021-11-02 22:46:24,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:24,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159763349] [2021-11-02 22:46:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:24,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:24,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:25,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3917 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-02 22:46:25,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:25,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159763349] [2021-11-02 22:46:25,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159763349] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:25,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935319082] [2021-11-02 22:46:25,524 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:46:25,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:25,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:25,525 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:46:25,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-02 22:46:28,244 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-11-02 22:46:28,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:46:28,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-02 22:46:28,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:46:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3917 backedges. 0 proven. 3888 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-02 22:46:28,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [935319082] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:28,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:46:28,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 37 [2021-11-02 22:46:28,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838934907] [2021-11-02 22:46:28,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-02 22:46:28,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:28,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-02 22:46:28,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=893, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:46:28,971 INFO L87 Difference]: Start difference. First operand 3372 states and 3654 transitions. Second operand has 38 states, 37 states have (on average 5.864864864864865) internal successors, (217), 38 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) [2021-11-02 22:46:38,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:38,574 INFO L93 Difference]: Finished difference Result 9579 states and 10664 transitions. [2021-11-02 22:46:38,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2021-11-02 22:46:38,575 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 5.864864864864865) internal successors, (217), 38 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 211 [2021-11-02 22:46:38,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:38,584 INFO L225 Difference]: With dead ends: 9579 [2021-11-02 22:46:38,585 INFO L226 Difference]: Without dead ends: 9578 [2021-11-02 22:46:38,590 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11751 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7247, Invalid=26425, Unknown=0, NotChecked=0, Total=33672 [2021-11-02 22:46:38,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9578 states. [2021-11-02 22:46:39,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9578 to 3496. [2021-11-02 22:46:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3496 states, 3495 states have (on average 1.0824034334763948) internal successors, (3783), 3495 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:46:39,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 3783 transitions. [2021-11-02 22:46:39,896 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 3783 transitions. Word has length 211 [2021-11-02 22:46:39,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:39,897 INFO L470 AbstractCegarLoop]: Abstraction has 3496 states and 3783 transitions. [2021-11-02 22:46:39,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 5.864864864864865) internal successors, (217), 38 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) [2021-11-02 22:46:39,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 3783 transitions. [2021-11-02 22:46:39,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-02 22:46:39,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:39,902 INFO L513 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 30, 30, 30, 1, 1, 1] [2021-11-02 22:46:39,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-02 22:46:40,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:40,103 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:46:40,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:40,103 INFO L85 PathProgramCache]: Analyzing trace with hash -636040528, now seen corresponding path program 55 times [2021-11-02 22:46:40,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:40,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116258705] [2021-11-02 22:46:40,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:40,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:40,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:40,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4157 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-02 22:46:40,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:40,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116258705] [2021-11-02 22:46:40,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116258705] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:40,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574660816] [2021-11-02 22:46:40,703 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:46:40,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:40,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:40,704 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:46:40,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-02 22:46:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:43,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-02 22:46:43,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:46:44,096 INFO L134 CoverageAnalysis]: Checked inductivity of 4187 backedges. 0 proven. 4157 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-02 22:46:44,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574660816] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:44,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:46:44,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 38 [2021-11-02 22:46:44,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633480541] [2021-11-02 22:46:44,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-02 22:46:44,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:46:44,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-02 22:46:44,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=937, Unknown=0, NotChecked=0, Total=1482 [2021-11-02 22:46:44,099 INFO L87 Difference]: Start difference. First operand 3496 states and 3783 transitions. Second operand has 39 states, 38 states have (on average 5.894736842105263) internal successors, (224), 39 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) [2021-11-02 22:46:54,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:46:54,128 INFO L93 Difference]: Finished difference Result 10220 states and 11388 transitions. [2021-11-02 22:46:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 186 states. [2021-11-02 22:46:54,129 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 5.894736842105263) internal successors, (224), 39 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 218 [2021-11-02 22:46:54,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:46:54,139 INFO L225 Difference]: With dead ends: 10220 [2021-11-02 22:46:54,139 INFO L226 Difference]: Without dead ends: 10219 [2021-11-02 22:46:54,143 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12561 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=7721, Invalid=28189, Unknown=0, NotChecked=0, Total=35910 [2021-11-02 22:46:54,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10219 states. [2021-11-02 22:46:55,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10219 to 3633. [2021-11-02 22:46:55,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3632 states have (on average 1.0814977973568283) internal successors, (3928), 3632 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:46:55,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 3928 transitions. [2021-11-02 22:46:55,437 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 3928 transitions. Word has length 218 [2021-11-02 22:46:55,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:46:55,437 INFO L470 AbstractCegarLoop]: Abstraction has 3633 states and 3928 transitions. [2021-11-02 22:46:55,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 5.894736842105263) internal successors, (224), 39 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) [2021-11-02 22:46:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 3928 transitions. [2021-11-02 22:46:55,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-11-02 22:46:55,442 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:46:55,442 INFO L513 BasicCegarLoop]: trace histogram [45, 44, 44, 22, 21, 21, 21, 1, 1, 1] [2021-11-02 22:46:55,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-02 22:46:55,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:55,643 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)] === [2021-11-02 22:46:55,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:46:55,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1148597333, now seen corresponding path program 56 times [2021-11-02 22:46:55,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:46:55,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107046321] [2021-11-02 22:46:55,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:46:55,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:46:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:46:55,922 INFO L134 CoverageAnalysis]: Checked inductivity of 4732 backedges. 0 proven. 3250 refuted. 0 times theorem prover too weak. 1482 trivial. 0 not checked. [2021-11-02 22:46:55,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:46:55,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107046321] [2021-11-02 22:46:55,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107046321] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:46:55,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405334234] [2021-11-02 22:46:55,923 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:46:55,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:46:55,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:46:55,924 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:46:55,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-02 22:46:58,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:46:58,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:46:58,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-02 22:46:58,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:00,333 INFO L134 CoverageAnalysis]: Checked inductivity of 4732 backedges. 2585 proven. 1206 refuted. 0 times theorem prover too weak. 941 trivial. 0 not checked. [2021-11-02 22:47:00,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405334234] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:00,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:47:00,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24] total 44 [2021-11-02 22:47:00,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142494847] [2021-11-02 22:47:00,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-02 22:47:00,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:00,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-02 22:47:00,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=1648, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 22:47:00,337 INFO L87 Difference]: Start difference. First operand 3633 states and 3928 transitions. Second operand has 44 states, 44 states have (on average 5.181818181818182) internal successors, (228), 44 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:11,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:11,261 INFO L93 Difference]: Finished difference Result 5049 states and 5492 transitions. [2021-11-02 22:47:11,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 199 states. [2021-11-02 22:47:11,262 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.181818181818182) internal successors, (228), 44 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 221 [2021-11-02 22:47:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:11,266 INFO L225 Difference]: With dead ends: 5049 [2021-11-02 22:47:11,267 INFO L226 Difference]: Without dead ends: 4346 [2021-11-02 22:47:11,271 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 236 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20149 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=6672, Invalid=49734, Unknown=0, NotChecked=0, Total=56406 [2021-11-02 22:47:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4346 states. [2021-11-02 22:47:12,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4346 to 3812. [2021-11-02 22:47:12,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3812 states, 3811 states have (on average 1.0865914458147468) internal successors, (4141), 3811 states have internal predecessors, (4141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:12,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3812 states to 3812 states and 4141 transitions. [2021-11-02 22:47:12,888 INFO L78 Accepts]: Start accepts. Automaton has 3812 states and 4141 transitions. Word has length 221 [2021-11-02 22:47:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:12,889 INFO L470 AbstractCegarLoop]: Abstraction has 3812 states and 4141 transitions. [2021-11-02 22:47:12,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.181818181818182) internal successors, (228), 44 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3812 states and 4141 transitions. [2021-11-02 22:47:12,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-11-02 22:47:12,893 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:12,893 INFO L513 BasicCegarLoop]: trace histogram [33, 32, 32, 32, 31, 31, 31, 1, 1, 1] [2021-11-02 22:47:12,928 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:13,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2021-11-02 22:47:13,094 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:47:13,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:13,094 INFO L85 PathProgramCache]: Analyzing trace with hash -654356973, now seen corresponding path program 57 times [2021-11-02 22:47:13,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:13,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739191051] [2021-11-02 22:47:13,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:13,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 4435 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-02 22:47:13,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:13,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739191051] [2021-11-02 22:47:13,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739191051] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:13,794 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576290052] [2021-11-02 22:47:13,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:47:13,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:13,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:13,796 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:13,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-02 22:47:16,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 44 check-sat command(s) [2021-11-02 22:47:16,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:47:16,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-02 22:47:16,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:17,529 INFO L134 CoverageAnalysis]: Checked inductivity of 4466 backedges. 0 proven. 4435 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-02 22:47:17,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576290052] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:17,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:47:17,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 39 [2021-11-02 22:47:17,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655319242] [2021-11-02 22:47:17,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-02 22:47:17,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:17,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-02 22:47:17,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=578, Invalid=982, Unknown=0, NotChecked=0, Total=1560 [2021-11-02 22:47:17,532 INFO L87 Difference]: Start difference. First operand 3812 states and 4141 transitions. Second operand has 40 states, 39 states have (on average 5.923076923076923) internal successors, (231), 40 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:31,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:31,101 INFO L93 Difference]: Finished difference Result 13610 states and 15224 transitions. [2021-11-02 22:47:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-11-02 22:47:31,101 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 5.923076923076923) internal successors, (231), 40 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:47:31,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:31,118 INFO L225 Difference]: With dead ends: 13610 [2021-11-02 22:47:31,118 INFO L226 Difference]: Without dead ends: 13609 [2021-11-02 22:47:31,123 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13398 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=8210, Invalid=30010, Unknown=0, NotChecked=0, Total=38220 [2021-11-02 22:47:31,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13609 states. [2021-11-02 22:47:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13609 to 3962. [2021-11-02 22:47:32,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3961 states have (on average 1.086089371370866) internal successors, (4302), 3961 states have internal predecessors, (4302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 4302 transitions. [2021-11-02 22:47:32,863 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 4302 transitions. Word has length 225 [2021-11-02 22:47:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:32,863 INFO L470 AbstractCegarLoop]: Abstraction has 3962 states and 4302 transitions. [2021-11-02 22:47:32,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 5.923076923076923) internal successors, (231), 40 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:32,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 4302 transitions. [2021-11-02 22:47:32,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-11-02 22:47:32,867 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:32,868 INFO L513 BasicCegarLoop]: trace histogram [39, 38, 38, 28, 27, 27, 27, 1, 1, 1] [2021-11-02 22:47:32,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:33,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:33,068 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)] === [2021-11-02 22:47:33,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:33,069 INFO L85 PathProgramCache]: Analyzing trace with hash -865467367, now seen corresponding path program 58 times [2021-11-02 22:47:33,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:33,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253432235] [2021-11-02 22:47:33,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:33,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4669 backedges. 0 proven. 3971 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2021-11-02 22:47:33,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:33,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253432235] [2021-11-02 22:47:33,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253432235] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:33,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019757909] [2021-11-02 22:47:33,463 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:47:33,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:33,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:33,464 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:33,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-02 22:47:36,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:47:36,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:47:36,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-02 22:47:36,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:38,464 INFO L134 CoverageAnalysis]: Checked inductivity of 4669 backedges. 1418 proven. 3189 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-02 22:47:38,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019757909] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:38,464 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:47:38,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 36] total 61 [2021-11-02 22:47:38,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203124615] [2021-11-02 22:47:38,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-11-02 22:47:38,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:38,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-11-02 22:47:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=557, Invalid=3103, Unknown=0, NotChecked=0, Total=3660 [2021-11-02 22:47:38,466 INFO L87 Difference]: Start difference. First operand 3962 states and 4302 transitions. Second operand has 61 states, 61 states have (on average 5.704918032786885) internal successors, (348), 61 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:51,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:47:51,089 INFO L93 Difference]: Finished difference Result 6175 states and 6770 transitions. [2021-11-02 22:47:51,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2021-11-02 22:47:51,090 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 5.704918032786885) internal successors, (348), 61 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 227 [2021-11-02 22:47:51,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:47:51,096 INFO L225 Difference]: With dead ends: 6175 [2021-11-02 22:47:51,096 INFO L226 Difference]: Without dead ends: 5580 [2021-11-02 22:47:51,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 299 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31492 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=8218, Invalid=82082, Unknown=0, NotChecked=0, Total=90300 [2021-11-02 22:47:51,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5580 states. [2021-11-02 22:47:52,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5580 to 3830. [2021-11-02 22:47:52,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3830 states, 3829 states have (on average 1.0848785583703318) internal successors, (4154), 3829 states have internal predecessors, (4154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3830 states to 3830 states and 4154 transitions. [2021-11-02 22:47:52,759 INFO L78 Accepts]: Start accepts. Automaton has 3830 states and 4154 transitions. Word has length 227 [2021-11-02 22:47:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:47:52,759 INFO L470 AbstractCegarLoop]: Abstraction has 3830 states and 4154 transitions. [2021-11-02 22:47:52,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 5.704918032786885) internal successors, (348), 61 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:47:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3830 states and 4154 transitions. [2021-11-02 22:47:52,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-11-02 22:47:52,764 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:47:52,764 INFO L513 BasicCegarLoop]: trace histogram [34, 33, 33, 33, 32, 32, 32, 1, 1, 1] [2021-11-02 22:47:52,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2021-11-02 22:47:52,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable64 [2021-11-02 22:47:52,964 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:47:52,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:47:52,965 INFO L85 PathProgramCache]: Analyzing trace with hash 723633488, now seen corresponding path program 59 times [2021-11-02 22:47:52,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:47:52,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582475006] [2021-11-02 22:47:52,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:47:52,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:47:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:47:53,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4754 backedges. 0 proven. 4722 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-02 22:47:53,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:47:53,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582475006] [2021-11-02 22:47:53,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582475006] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:53,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293454879] [2021-11-02 22:47:53,638 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:47:53,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:47:53,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:47:53,642 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:47:53,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-11-02 22:47:56,726 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-11-02 22:47:56,726 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:47:56,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-02 22:47:56,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:47:57,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4754 backedges. 0 proven. 4722 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-02 22:47:57,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293454879] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:47:57,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:47:57,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 40 [2021-11-02 22:47:57,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241952280] [2021-11-02 22:47:57,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-02 22:47:57,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:47:57,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-02 22:47:57,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=1028, Unknown=0, NotChecked=0, Total=1640 [2021-11-02 22:47:57,471 INFO L87 Difference]: Start difference. First operand 3830 states and 4154 transitions. Second operand has 41 states, 40 states have (on average 5.95) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:12,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:12,067 INFO L93 Difference]: Finished difference Result 14546 states and 16270 transitions. [2021-11-02 22:48:12,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 198 states. [2021-11-02 22:48:12,068 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 5.95) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have 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 [2021-11-02 22:48:12,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:12,083 INFO L225 Difference]: With dead ends: 14546 [2021-11-02 22:48:12,083 INFO L226 Difference]: Without dead ends: 14545 [2021-11-02 22:48:12,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14262 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=8714, Invalid=31888, Unknown=0, NotChecked=0, Total=40602 [2021-11-02 22:48:12,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14545 states. [2021-11-02 22:48:13,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14545 to 3977. [2021-11-02 22:48:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3977 states, 3976 states have (on average 1.0837525150905432) internal successors, (4309), 3976 states have internal predecessors, (4309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3977 states to 3977 states and 4309 transitions. [2021-11-02 22:48:13,810 INFO L78 Accepts]: Start accepts. Automaton has 3977 states and 4309 transitions. Word has length 232 [2021-11-02 22:48:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:13,811 INFO L470 AbstractCegarLoop]: Abstraction has 3977 states and 4309 transitions. [2021-11-02 22:48:13,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 5.95) internal successors, (238), 41 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 3977 states and 4309 transitions. [2021-11-02 22:48:13,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-11-02 22:48:13,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:13,815 INFO L513 BasicCegarLoop]: trace histogram [49, 48, 48, 22, 21, 21, 21, 1, 1, 1] [2021-11-02 22:48:13,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2021-11-02 22:48:14,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-11-02 22:48:14,031 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)] === [2021-11-02 22:48:14,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:14,032 INFO L85 PathProgramCache]: Analyzing trace with hash 270054445, now seen corresponding path program 60 times [2021-11-02 22:48:14,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:14,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189168231] [2021-11-02 22:48:14,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:14,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:14,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 0 proven. 3078 refuted. 0 times theorem prover too weak. 2292 trivial. 0 not checked. [2021-11-02 22:48:14,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:14,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189168231] [2021-11-02 22:48:14,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189168231] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:14,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506899130] [2021-11-02 22:48:14,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-02 22:48:14,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:14,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:14,282 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:48:14,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-11-02 22:48:17,356 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-11-02 22:48:17,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:48:17,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-02 22:48:17,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:18,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5370 backedges. 1431 proven. 156 refuted. 0 times theorem prover too weak. 3783 trivial. 0 not checked. [2021-11-02 22:48:18,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506899130] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:18,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:48:18,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 34 [2021-11-02 22:48:18,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888425821] [2021-11-02 22:48:18,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:48:18,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:18,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:48:18,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:48:18,619 INFO L87 Difference]: Start difference. First operand 3977 states and 4309 transitions. Second operand has 34 states, 34 states have (on average 3.823529411764706) internal successors, (130), 34 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:33,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:48:33,037 INFO L93 Difference]: Finished difference Result 11061 states and 12246 transitions. [2021-11-02 22:48:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2021-11-02 22:48:33,037 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.823529411764706) internal successors, (130), 34 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2021-11-02 22:48:33,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:48:33,046 INFO L225 Difference]: With dead ends: 11061 [2021-11-02 22:48:33,046 INFO L226 Difference]: Without dead ends: 9423 [2021-11-02 22:48:33,053 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22376 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=9232, Invalid=45290, Unknown=0, NotChecked=0, Total=54522 [2021-11-02 22:48:33,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9423 states. [2021-11-02 22:48:35,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9423 to 6076. [2021-11-02 22:48:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6076 states, 6075 states have (on average 1.1050205761316871) internal successors, (6713), 6075 states have internal predecessors, (6713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 6713 transitions. [2021-11-02 22:48:35,770 INFO L78 Accepts]: Start accepts. Automaton has 6076 states and 6713 transitions. Word has length 233 [2021-11-02 22:48:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:48:35,770 INFO L470 AbstractCegarLoop]: Abstraction has 6076 states and 6713 transitions. [2021-11-02 22:48:35,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.823529411764706) internal successors, (130), 34 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:48:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 6076 states and 6713 transitions. [2021-11-02 22:48:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-11-02 22:48:35,775 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:48:35,775 INFO L513 BasicCegarLoop]: trace histogram [35, 34, 34, 34, 33, 33, 33, 1, 1, 1] [2021-11-02 22:48:35,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2021-11-02 22:48:35,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:35,976 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:48:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:48:35,976 INFO L85 PathProgramCache]: Analyzing trace with hash -79487117, now seen corresponding path program 61 times [2021-11-02 22:48:35,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:48:35,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651929558] [2021-11-02 22:48:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:48:35,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:48:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:36,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5051 backedges. 0 proven. 5018 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-02 22:48:36,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:48:36,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651929558] [2021-11-02 22:48:36,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651929558] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:36,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172857671] [2021-11-02 22:48:36,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-02 22:48:36,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:48:36,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:48:36,647 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:48:36,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-11-02 22:48:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:48:39,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-02 22:48:39,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:48:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5051 backedges. 0 proven. 5018 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-02 22:48:40,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172857671] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:48:40,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:48:40,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 41 [2021-11-02 22:48:40,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214013292] [2021-11-02 22:48:40,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-02 22:48:40,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:48:40,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-02 22:48:40,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=647, Invalid=1075, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:48:40,548 INFO L87 Difference]: Start difference. First operand 6076 states and 6713 transitions. Second operand has 42 states, 41 states have (on average 5.975609756097561) internal successors, (245), 42 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:05,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:05,338 INFO L93 Difference]: Finished difference Result 27771 states and 31559 transitions. [2021-11-02 22:49:05,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 204 states. [2021-11-02 22:49:05,338 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 5.975609756097561) internal successors, (245), 42 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 239 [2021-11-02 22:49:05,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:05,372 INFO L225 Difference]: With dead ends: 27771 [2021-11-02 22:49:05,372 INFO L226 Difference]: Without dead ends: 27770 [2021-11-02 22:49:05,378 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15153 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=9233, Invalid=33823, Unknown=0, NotChecked=0, Total=43056 [2021-11-02 22:49:05,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27770 states. [2021-11-02 22:49:08,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27770 to 6236. [2021-11-02 22:49:08,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6236 states, 6235 states have (on average 1.1040898155573375) internal successors, (6884), 6235 states have internal predecessors, (6884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6236 states to 6236 states and 6884 transitions. [2021-11-02 22:49:08,477 INFO L78 Accepts]: Start accepts. Automaton has 6236 states and 6884 transitions. Word has length 239 [2021-11-02 22:49:08,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:08,477 INFO L470 AbstractCegarLoop]: Abstraction has 6236 states and 6884 transitions. [2021-11-02 22:49:08,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 5.975609756097561) internal successors, (245), 42 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:08,477 INFO L276 IsEmpty]: Start isEmpty. Operand 6236 states and 6884 transitions. [2021-11-02 22:49:08,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-11-02 22:49:08,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:08,483 INFO L513 BasicCegarLoop]: trace histogram [42, 41, 41, 30, 29, 29, 29, 1, 1, 1] [2021-11-02 22:49:08,518 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-11-02 22:49:08,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-11-02 22:49:08,684 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)] === [2021-11-02 22:49:08,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:08,684 INFO L85 PathProgramCache]: Analyzing trace with hash -2035467347, now seen corresponding path program 62 times [2021-11-02 22:49:08,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:08,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051187912] [2021-11-02 22:49:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:08,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:08,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 5413 backedges. 0 proven. 4539 refuted. 0 times theorem prover too weak. 874 trivial. 0 not checked. [2021-11-02 22:49:09,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:09,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051187912] [2021-11-02 22:49:09,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051187912] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:09,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061189157] [2021-11-02 22:49:09,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:49:09,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:49:09,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:49:09,099 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:49:09,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-11-02 22:49:12,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:49:12,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:49:12,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-02 22:49:12,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:49:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5413 backedges. 0 proven. 5344 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-02 22:49:13,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061189157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:13,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:49:13,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 35] total 41 [2021-11-02 22:49:13,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333151280] [2021-11-02 22:49:13,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-11-02 22:49:13,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:13,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-11-02 22:49:13,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1378, Unknown=0, NotChecked=0, Total=1722 [2021-11-02 22:49:13,889 INFO L87 Difference]: Start difference. First operand 6236 states and 6884 transitions. Second operand has 42 states, 41 states have (on average 5.7317073170731705) internal successors, (235), 42 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:39,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:49:39,849 INFO L93 Difference]: Finished difference Result 21755 states and 24613 transitions. [2021-11-02 22:49:39,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2021-11-02 22:49:39,849 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 5.7317073170731705) internal successors, (235), 42 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 244 [2021-11-02 22:49:39,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:49:39,874 INFO L225 Difference]: With dead ends: 21755 [2021-11-02 22:49:39,874 INFO L226 Difference]: Without dead ends: 21754 [2021-11-02 22:49:39,881 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35519 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=15348, Invalid=69042, Unknown=0, NotChecked=0, Total=84390 [2021-11-02 22:49:39,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21754 states. [2021-11-02 22:49:47,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21754 to 9795. [2021-11-02 22:49:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9795 states, 9794 states have (on average 1.1064937716969574) internal successors, (10837), 9794 states have internal predecessors, (10837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:47,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9795 states to 9795 states and 10837 transitions. [2021-11-02 22:49:47,298 INFO L78 Accepts]: Start accepts. Automaton has 9795 states and 10837 transitions. Word has length 244 [2021-11-02 22:49:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:49:47,298 INFO L470 AbstractCegarLoop]: Abstraction has 9795 states and 10837 transitions. [2021-11-02 22:49:47,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 5.7317073170731705) internal successors, (235), 42 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:49:47,299 INFO L276 IsEmpty]: Start isEmpty. Operand 9795 states and 10837 transitions. [2021-11-02 22:49:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-11-02 22:49:47,306 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:49:47,307 INFO L513 BasicCegarLoop]: trace histogram [36, 35, 35, 35, 34, 34, 34, 1, 1, 1] [2021-11-02 22:49:47,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2021-11-02 22:49:47,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-11-02 22:49:47,508 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:49:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:49:47,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1368500208, now seen corresponding path program 63 times [2021-11-02 22:49:47,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:49:47,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827281923] [2021-11-02 22:49:47,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:49:47,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:49:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:49:48,219 INFO L134 CoverageAnalysis]: Checked inductivity of 5357 backedges. 0 proven. 5323 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-02 22:49:48,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:49:48,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827281923] [2021-11-02 22:49:48,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827281923] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:48,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339680844] [2021-11-02 22:49:48,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:49:48,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:49:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:49:48,220 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:49:48,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-11-02 22:49:51,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 49 check-sat command(s) [2021-11-02 22:49:51,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:49:51,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 39 conjunts are in the unsatisfiable core [2021-11-02 22:49:51,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:49:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 5357 backedges. 0 proven. 5323 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-02 22:49:52,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339680844] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:49:52,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:49:52,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 42 [2021-11-02 22:49:52,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25139148] [2021-11-02 22:49:52,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-02 22:49:52,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:49:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-02 22:49:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=1123, Unknown=0, NotChecked=0, Total=1806 [2021-11-02 22:49:52,066 INFO L87 Difference]: Start difference. First operand 9795 states and 10837 transitions. Second operand has 43 states, 42 states have (on average 6.0) internal successors, (252), 43 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) [2021-11-02 22:50:20,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:50:20,659 INFO L93 Difference]: Finished difference Result 24138 states and 27279 transitions. [2021-11-02 22:50:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2021-11-02 22:50:20,660 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 6.0) internal successors, (252), 43 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 246 [2021-11-02 22:50:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:50:20,686 INFO L225 Difference]: With dead ends: 24138 [2021-11-02 22:50:20,686 INFO L226 Difference]: Without dead ends: 24137 [2021-11-02 22:50:20,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16071 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=9767, Invalid=35815, Unknown=0, NotChecked=0, Total=45582 [2021-11-02 22:50:20,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24137 states. [2021-11-02 22:50:27,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24137 to 9955. [2021-11-02 22:50:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9955 states, 9954 states have (on average 1.105887080570625) internal successors, (11008), 9954 states have internal predecessors, (11008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:50:27,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9955 states to 9955 states and 11008 transitions. [2021-11-02 22:50:27,952 INFO L78 Accepts]: Start accepts. Automaton has 9955 states and 11008 transitions. Word has length 246 [2021-11-02 22:50:27,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:50:27,952 INFO L470 AbstractCegarLoop]: Abstraction has 9955 states and 11008 transitions. [2021-11-02 22:50:27,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 6.0) internal successors, (252), 43 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) [2021-11-02 22:50:27,953 INFO L276 IsEmpty]: Start isEmpty. Operand 9955 states and 11008 transitions. [2021-11-02 22:50:27,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-11-02 22:50:27,962 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:50:27,962 INFO L513 BasicCegarLoop]: trace histogram [43, 42, 42, 31, 30, 30, 30, 1, 1, 1] [2021-11-02 22:50:28,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-11-02 22:50:28,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-11-02 22:50:28,175 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)] === [2021-11-02 22:50:28,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:50:28,176 INFO L85 PathProgramCache]: Analyzing trace with hash -645826224, now seen corresponding path program 64 times [2021-11-02 22:50:28,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:50:28,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622902603] [2021-11-02 22:50:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:50:28,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:50:28,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:50:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5727 backedges. 0 proven. 4852 refuted. 0 times theorem prover too weak. 875 trivial. 0 not checked. [2021-11-02 22:50:28,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:50:28,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622902603] [2021-11-02 22:50:28,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622902603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:50:28,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708638824] [2021-11-02 22:50:28,594 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:50:28,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:50:28,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:50:28,595 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:50:28,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-11-02 22:50:32,134 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:50:32,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:50:32,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-02 22:50:32,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:50:34,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5727 backedges. 1755 proven. 3903 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-02 22:50:34,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708638824] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:50:34,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:50:34,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 39] total 66 [2021-11-02 22:50:34,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285700854] [2021-11-02 22:50:34,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 22:50:34,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:50:34,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 22:50:34,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=660, Invalid=3630, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:50:34,388 INFO L87 Difference]: Start difference. First operand 9955 states and 11008 transitions. Second operand has 66 states, 66 states have (on average 5.803030303030303) internal successors, (383), 66 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:50:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:50:53,183 INFO L93 Difference]: Finished difference Result 11445 states and 12735 transitions. [2021-11-02 22:50:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 270 states. [2021-11-02 22:50:53,183 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 5.803030303030303) internal successors, (383), 66 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 251 [2021-11-02 22:50:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:50:53,193 INFO L225 Difference]: With dead ends: 11445 [2021-11-02 22:50:53,193 INFO L226 Difference]: Without dead ends: 10696 [2021-11-02 22:50:53,202 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38368 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=9757, Invalid=99473, Unknown=0, NotChecked=0, Total=109230 [2021-11-02 22:50:53,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10696 states. [2021-11-02 22:51:00,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10696 to 9813. [2021-11-02 22:51:00,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9813 states, 9812 states have (on average 1.1057888300040766) internal successors, (10850), 9812 states have internal predecessors, (10850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:51:00,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9813 states to 9813 states and 10850 transitions. [2021-11-02 22:51:00,566 INFO L78 Accepts]: Start accepts. Automaton has 9813 states and 10850 transitions. Word has length 251 [2021-11-02 22:51:00,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:51:00,566 INFO L470 AbstractCegarLoop]: Abstraction has 9813 states and 10850 transitions. [2021-11-02 22:51:00,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 5.803030303030303) internal successors, (383), 66 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:51:00,567 INFO L276 IsEmpty]: Start isEmpty. Operand 9813 states and 10850 transitions. [2021-11-02 22:51:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-11-02 22:51:00,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:51:00,579 INFO L513 BasicCegarLoop]: trace histogram [37, 36, 36, 36, 35, 35, 35, 1, 1, 1] [2021-11-02 22:51:00,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-11-02 22:51:00,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:51:00,780 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-02 22:51:00,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:51:00,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1078790355, now seen corresponding path program 65 times [2021-11-02 22:51:00,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:51:00,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619645103] [2021-11-02 22:51:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:51:00,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:51:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:51:01,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5672 backedges. 0 proven. 5637 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-02 22:51:01,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:51:01,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619645103] [2021-11-02 22:51:01,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619645103] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:51:01,550 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [245376963] [2021-11-02 22:51:01,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:51:01,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:51:01,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:51:01,551 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:51:01,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc7c2f37-2370-4f74-ab69-193740ca29be/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-11-02 22:51:05,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2021-11-02 22:51:05,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:51:05,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-02 22:51:05,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:51:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 5672 backedges. 0 proven. 5637 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-02 22:51:06,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [245376963] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:51:06,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:51:06,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 43 [2021-11-02 22:51:06,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444929229] [2021-11-02 22:51:06,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-02 22:51:06,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:51:06,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-02 22:51:06,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=720, Invalid=1172, Unknown=0, NotChecked=0, Total=1892 [2021-11-02 22:51:06,115 INFO L87 Difference]: Start difference. First operand 9813 states and 10850 transitions. Second operand has 44 states, 43 states have (on average 6.023255813953488) internal successors, (259), 44 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) [2021-11-02 22:51:37,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:51:37,873 INFO L93 Difference]: Finished difference Result 25899 states and 29287 transitions. [2021-11-02 22:51:37,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 216 states. [2021-11-02 22:51:37,874 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 6.023255813953488) internal successors, (259), 44 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 253 [2021-11-02 22:51:37,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:51:37,905 INFO L225 Difference]: With dead ends: 25899 [2021-11-02 22:51:37,905 INFO L226 Difference]: Without dead ends: 25898 [2021-11-02 22:51:37,913 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17016 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=10316, Invalid=37864, Unknown=0, NotChecked=0, Total=48180 [2021-11-02 22:51:37,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25898 states.