./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 820aaba80b9c7e4ca2ad4a6a908bac2e6f59545dc6a131cb9fae6306b993a9eb ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:23:46,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:23:46,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:23:46,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:23:46,746 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:23:46,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:23:46,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:23:46,752 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:23:46,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:23:46,756 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:23:46,758 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:23:46,760 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:23:46,760 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:23:46,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:23:46,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:23:46,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:23:46,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:23:46,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:23:46,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:23:46,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:23:46,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:23:46,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:23:46,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:23:46,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:23:46,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:23:46,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:23:46,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:23:46,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:23:46,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:23:46,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:23:46,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:23:46,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:23:46,838 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:23:46,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:23:46,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:23:46,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:23:46,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:23:46,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:23:46,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:23:46,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:23:46,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:23:46,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:23:46,898 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:23:46,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:23:46,898 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:23:46,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:23:46,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:23:46,900 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:23:46,900 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:23:46,901 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:23:46,901 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:23:46,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:23:46,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:23:46,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:23:46,902 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:23:46,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:23:46,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:23:46,903 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:23:46,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:23:46,903 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:23:46,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:23:46,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:23:46,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:23:46,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:23:46,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:23:46,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:23:46,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:23:46,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:23:46,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:23:46,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:23:46,906 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:23:46,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:23:46,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:23:46,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:23:46,907 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_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 820aaba80b9c7e4ca2ad4a6a908bac2e6f59545dc6a131cb9fae6306b993a9eb [2021-10-28 09:23:47,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:23:47,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:23:47,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:23:47,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:23:47,189 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:23:47,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c [2021-10-28 09:23:47,264 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/data/8597209ba/4c574de10aa34df0baf1f6318b1dbbb0/FLAG048a313c0 [2021-10-28 09:23:47,839 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:23:47,844 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c [2021-10-28 09:23:47,856 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/data/8597209ba/4c574de10aa34df0baf1f6318b1dbbb0/FLAG048a313c0 [2021-10-28 09:23:48,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/data/8597209ba/4c574de10aa34df0baf1f6318b1dbbb0 [2021-10-28 09:23:48,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:23:48,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:23:48,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:23:48,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:23:48,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:23:48,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d104e99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48, skipping insertion in model container [2021-10-28 09:23:48,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:23:48,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:23:48,316 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c[588,601] [2021-10-28 09:23:48,339 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:23:48,349 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:23:48,364 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_unwindbound20.c[588,601] [2021-10-28 09:23:48,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:23:48,393 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:23:48,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48 WrapperNode [2021-10-28 09:23:48,394 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:23:48,395 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:23:48,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:23:48,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:23:48,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:23:48,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:23:48,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:23:48,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:23:48,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:23:48,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:23:48,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:23:48,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:23:48,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (1/1) ... [2021-10-28 09:23:48,491 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:23:48,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:48,526 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:23:48,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:23:48,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:23:48,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:23:48,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:23:48,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:23:48,927 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:23:48,927 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-28 09:23:48,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:48 BoogieIcfgContainer [2021-10-28 09:23:48,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:23:48,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:23:48,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:23:48,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:23:48,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:23:48" (1/3) ... [2021-10-28 09:23:48,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12800c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:23:48, skipping insertion in model container [2021-10-28 09:23:48,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:48" (2/3) ... [2021-10-28 09:23:48,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12800c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:23:48, skipping insertion in model container [2021-10-28 09:23:48,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:48" (3/3) ... [2021-10-28 09:23:48,940 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_unwindbound20.c [2021-10-28 09:23:48,947 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:23:48,947 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-10-28 09:23:49,003 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:23:49,010 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=PETRI_NET, 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 [2021-10-28 09:23:49,011 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-10-28 09:23:49,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:49,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:23:49,035 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:49,036 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:23:49,036 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:49,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:49,043 INFO L85 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2021-10-28 09:23:49,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:49,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521868147] [2021-10-28 09:23:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:49,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:49,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:49,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:49,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521868147] [2021-10-28 09:23:49,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521868147] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:49,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:49,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:23:49,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449487201] [2021-10-28 09:23:49,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:23:49,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:49,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:23:49,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:23:49,414 INFO L87 Difference]: Start difference. First operand has 52 states, 40 states have (on average 1.625) internal successors, (65), 51 states have internal predecessors, (65), 0 states have call successors, (0), 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 1.5) 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) [2021-10-28 09:23:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:49,558 INFO L93 Difference]: Finished difference Result 101 states and 129 transitions. [2021-10-28 09:23:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:23:49,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) 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 [2021-10-28 09:23:49,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:49,570 INFO L225 Difference]: With dead ends: 101 [2021-10-28 09:23:49,570 INFO L226 Difference]: Without dead ends: 47 [2021-10-28 09:23:49,574 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 [2021-10-28 09:23:49,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-10-28 09:23:49,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 44. [2021-10-28 09:23:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 43 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:49,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-10-28 09:23:49,615 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 6 [2021-10-28 09:23:49,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:49,615 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-10-28 09:23:49,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) 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) [2021-10-28 09:23:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-10-28 09:23:49,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:23:49,617 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:49,617 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:49,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:23:49,618 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:49,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:49,620 INFO L85 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2021-10-28 09:23:49,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:49,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536802151] [2021-10-28 09:23:49,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:49,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:49,646 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:49,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2035173473] [2021-10-28 09:23:49,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:49,646 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:49,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:49,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:49,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:23:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:49,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:23:49,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:49,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:49,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536802151] [2021-10-28 09:23:49,876 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:49,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035173473] [2021-10-28 09:23:49,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035173473] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:49,877 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:49,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:23:49,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605791112] [2021-10-28 09:23:49,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:23:49,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:49,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:23:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:23:49,882 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-28 09:23:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:49,987 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2021-10-28 09:23:49,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:23:49,988 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2021-10-28 09:23:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:49,990 INFO L225 Difference]: With dead ends: 86 [2021-10-28 09:23:49,990 INFO L226 Difference]: Without dead ends: 84 [2021-10-28 09:23:49,991 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:23:49,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-28 09:23:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 49. [2021-10-28 09:23:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.275) internal successors, (51), 48 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:50,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2021-10-28 09:23:50,004 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 8 [2021-10-28 09:23:50,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:50,004 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2021-10-28 09:23:50,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2021-10-28 09:23:50,005 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2021-10-28 09:23:50,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:23:50,006 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:50,006 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:50,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:50,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:50,228 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:50,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:50,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1269812074, now seen corresponding path program 1 times [2021-10-28 09:23:50,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:50,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39940710] [2021-10-28 09:23:50,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:50,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:50,255 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:50,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215698935] [2021-10-28 09:23:50,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:50,256 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:50,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:50,257 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:50,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:23:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:50,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-28 09:23:50,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:50,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:50,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:50,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39940710] [2021-10-28 09:23:50,373 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:50,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215698935] [2021-10-28 09:23:50,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215698935] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:50,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:50,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:23:50,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557200494] [2021-10-28 09:23:50,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:23:50,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:50,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:23:50,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:23:50,377 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:50,408 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2021-10-28 09:23:50,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:23:50,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 09:23:50,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:50,410 INFO L225 Difference]: With dead ends: 71 [2021-10-28 09:23:50,410 INFO L226 Difference]: Without dead ends: 49 [2021-10-28 09:23:50,411 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:23:50,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-28 09:23:50,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-10-28 09:23:50,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 40 states have (on average 1.25) internal successors, (50), 48 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:50,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-10-28 09:23:50,421 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 9 [2021-10-28 09:23:50,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:50,421 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-10-28 09:23:50,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:50,422 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-10-28 09:23:50,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:23:50,423 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:50,423 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:50,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:50,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:50,624 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:50,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:50,625 INFO L85 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2021-10-28 09:23:50,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:50,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800375841] [2021-10-28 09:23:50,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:50,627 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:50,659 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:50,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536901674] [2021-10-28 09:23:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:50,660 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:50,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:50,669 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:50,670 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:23:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:50,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:23:50,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:50,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:50,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:50,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800375841] [2021-10-28 09:23:50,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:50,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536901674] [2021-10-28 09:23:50,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536901674] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:50,832 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:50,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:23:50,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379685249] [2021-10-28 09:23:50,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:23:50,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:50,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:23:50,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:23:50,840 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:50,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:50,996 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2021-10-28 09:23:50,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:23:50,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 09:23:50,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:50,998 INFO L225 Difference]: With dead ends: 84 [2021-10-28 09:23:50,999 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 09:23:50,999 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:23:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 09:23:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-28 09:23:51,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 59 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2021-10-28 09:23:51,019 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 10 [2021-10-28 09:23:51,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:51,020 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2021-10-28 09:23:51,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2021-10-28 09:23:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:23:51,022 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:51,022 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:51,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:51,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:51,240 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:51,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:51,241 INFO L85 PathProgramCache]: Analyzing trace with hash -828134125, now seen corresponding path program 1 times [2021-10-28 09:23:51,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:51,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255604041] [2021-10-28 09:23:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:51,241 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:51,255 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:51,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019892136] [2021-10-28 09:23:51,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:51,280 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:51,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:51,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:51,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:23:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:51,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:23:51,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:51,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:51,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:51,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255604041] [2021-10-28 09:23:51,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:51,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019892136] [2021-10-28 09:23:51,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019892136] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:23:51,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:23:51,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:23:51,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493317549] [2021-10-28 09:23:51,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:23:51,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:51,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:23:51,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:23:51,502 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:51,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:51,705 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-10-28 09:23:51,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:23:51,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 09:23:51,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:51,707 INFO L225 Difference]: With dead ends: 83 [2021-10-28 09:23:51,707 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 09:23:51,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:23:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 09:23:51,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2021-10-28 09:23:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.2127659574468086) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:51,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-10-28 09:23:51,721 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 12 [2021-10-28 09:23:51,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:51,721 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-10-28 09:23:51,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:51,722 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-10-28 09:23:51,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:23:51,723 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:51,723 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:51,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-10-28 09:23:51,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:51,924 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:51,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1416701979, now seen corresponding path program 1 times [2021-10-28 09:23:51,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:51,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373574218] [2021-10-28 09:23:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:51,925 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:51,935 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:51,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417450080] [2021-10-28 09:23:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:51,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:51,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:51,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:51,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:23:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:52,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:23:52,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:52,252 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:52,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:52,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373574218] [2021-10-28 09:23:52,253 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:52,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417450080] [2021-10-28 09:23:52,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417450080] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:52,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:23:52,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:23:52,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688181887] [2021-10-28 09:23:52,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:23:52,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:52,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:23:52,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:23:52,256 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2021-10-28 09:23:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:52,387 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2021-10-28 09:23:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:23:52,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 09:23:52,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:52,389 INFO L225 Difference]: With dead ends: 99 [2021-10-28 09:23:52,389 INFO L226 Difference]: Without dead ends: 97 [2021-10-28 09:23:52,389 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:23:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-28 09:23:52,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 61. [2021-10-28 09:23:52,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.2115384615384615) internal successors, (63), 60 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) [2021-10-28 09:23:52,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-10-28 09:23:52,398 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 20 [2021-10-28 09:23:52,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:52,399 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-10-28 09:23:52,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2021-10-28 09:23:52,399 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-10-28 09:23:52,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 09:23:52,400 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:52,400 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:52,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:52,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 09:23:52,616 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:52,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:52,617 INFO L85 PathProgramCache]: Analyzing trace with hash -972705934, now seen corresponding path program 1 times [2021-10-28 09:23:52,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:52,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405197624] [2021-10-28 09:23:52,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:52,618 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:52,631 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:52,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639895614] [2021-10-28 09:23:52,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:52,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:52,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:52,634 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:52,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:23:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:52,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:23:52,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:52,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:52,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405197624] [2021-10-28 09:23:52,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:52,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639895614] [2021-10-28 09:23:52,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639895614] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:52,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:23:52,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-28 09:23:52,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801601335] [2021-10-28 09:23:52,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:23:52,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:52,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:23:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:23:52,805 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2021-10-28 09:23:52,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:52,829 INFO L93 Difference]: Finished difference Result 83 states and 84 transitions. [2021-10-28 09:23:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:23:52,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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 21 [2021-10-28 09:23:52,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:52,831 INFO L225 Difference]: With dead ends: 83 [2021-10-28 09:23:52,831 INFO L226 Difference]: Without dead ends: 61 [2021-10-28 09:23:52,833 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:23:52,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-28 09:23:52,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-10-28 09:23:52,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 60 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:52,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2021-10-28 09:23:52,849 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 21 [2021-10-28 09:23:52,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:52,850 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2021-10-28 09:23:52,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 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) [2021-10-28 09:23:52,850 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2021-10-28 09:23:52,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-28 09:23:52,851 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:52,852 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:52,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:53,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:53,068 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:53,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:53,069 INFO L85 PathProgramCache]: Analyzing trace with hash 54186920, now seen corresponding path program 1 times [2021-10-28 09:23:53,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:53,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908206892] [2021-10-28 09:23:53,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:53,069 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:53,079 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:53,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784585711] [2021-10-28 09:23:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:53,086 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:53,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:53,087 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:53,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:23:53,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:53,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:23:53,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:53,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:53,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908206892] [2021-10-28 09:23:53,409 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:53,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784585711] [2021-10-28 09:23:53,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784585711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:53,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:23:53,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:23:53,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138165459] [2021-10-28 09:23:53,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:23:53,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:53,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:23:53,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:23:53,412 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2021-10-28 09:23:53,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:53,534 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2021-10-28 09:23:53,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:23:53,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-28 09:23:53,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:53,536 INFO L225 Difference]: With dead ends: 96 [2021-10-28 09:23:53,536 INFO L226 Difference]: Without dead ends: 94 [2021-10-28 09:23:53,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:23:53,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-28 09:23:53,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 63. [2021-10-28 09:23:53,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 54 states have (on average 1.1851851851851851) internal successors, (64), 62 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:53,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2021-10-28 09:23:53,545 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 22 [2021-10-28 09:23:53,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:53,546 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2021-10-28 09:23:53,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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) [2021-10-28 09:23:53,546 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2021-10-28 09:23:53,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 09:23:53,547 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:53,547 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:53,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-10-28 09:23:53,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:53,772 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:53,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:53,773 INFO L85 PathProgramCache]: Analyzing trace with hash 534178827, now seen corresponding path program 1 times [2021-10-28 09:23:53,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:53,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017574516] [2021-10-28 09:23:53,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:53,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:53,787 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:53,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491236888] [2021-10-28 09:23:53,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:53,792 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:53,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:53,793 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:53,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:23:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:53,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:23:53,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:54,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:54,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017574516] [2021-10-28 09:23:54,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:54,219 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491236888] [2021-10-28 09:23:54,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491236888] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:54,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:23:54,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:23:54,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670181003] [2021-10-28 09:23:54,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:23:54,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:54,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:23:54,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:23:54,224 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:54,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:54,439 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2021-10-28 09:23:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:23:54,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 09:23:54,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:54,441 INFO L225 Difference]: With dead ends: 97 [2021-10-28 09:23:54,441 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 09:23:54,441 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:23:54,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 09:23:54,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 74. [2021-10-28 09:23:54,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 73 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) [2021-10-28 09:23:54,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2021-10-28 09:23:54,451 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 24 [2021-10-28 09:23:54,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:54,452 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2021-10-28 09:23:54,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:54,452 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2021-10-28 09:23:54,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:23:54,453 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:54,454 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:54,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:54,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:54,668 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:54,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:54,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1750673281, now seen corresponding path program 1 times [2021-10-28 09:23:54,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:54,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73079400] [2021-10-28 09:23:54,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:54,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:54,682 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:54,682 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1755959612] [2021-10-28 09:23:54,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:54,682 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:54,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:54,684 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:54,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 09:23:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:54,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-28 09:23:54,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:55,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:55,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73079400] [2021-10-28 09:23:55,961 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:55,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755959612] [2021-10-28 09:23:55,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755959612] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:55,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:23:55,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:23:55,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730432880] [2021-10-28 09:23:55,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:23:55,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:55,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:23:55,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:23:55,967 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:56,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:56,226 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-10-28 09:23:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:23:56,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-10-28 09:23:56,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:56,227 INFO L225 Difference]: With dead ends: 78 [2021-10-28 09:23:56,227 INFO L226 Difference]: Without dead ends: 76 [2021-10-28 09:23:56,227 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:23:56,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-28 09:23:56,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2021-10-28 09:23:56,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.1692307692307693) internal successors, (76), 73 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:56,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 76 transitions. [2021-10-28 09:23:56,234 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 76 transitions. Word has length 31 [2021-10-28 09:23:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:56,234 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 76 transitions. [2021-10-28 09:23:56,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:56,235 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 76 transitions. [2021-10-28 09:23:56,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-28 09:23:56,236 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:56,236 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 09:23:56,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:56,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 09:23:56,448 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:56,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:56,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1324326621, now seen corresponding path program 2 times [2021-10-28 09:23:56,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:56,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304951141] [2021-10-28 09:23:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:56,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:56,464 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:56,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704385047] [2021-10-28 09:23:56,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:23:56,464 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:56,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:56,474 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:56,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 09:23:56,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:23:56,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:23:56,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:23:56,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:57,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:57,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304951141] [2021-10-28 09:23:57,088 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:57,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704385047] [2021-10-28 09:23:57,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704385047] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:57,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:23:57,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:23:57,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630018878] [2021-10-28 09:23:57,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:23:57,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:57,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:23:57,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:23:57,090 INFO L87 Difference]: Start difference. First operand 74 states and 76 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:57,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:57,381 INFO L93 Difference]: Finished difference Result 119 states and 121 transitions. [2021-10-28 09:23:57,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:23:57,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-28 09:23:57,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:57,382 INFO L225 Difference]: With dead ends: 119 [2021-10-28 09:23:57,382 INFO L226 Difference]: Without dead ends: 117 [2021-10-28 09:23:57,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:23:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-10-28 09:23:57,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 79. [2021-10-28 09:23:57,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 70 states have (on average 1.1714285714285715) internal successors, (82), 78 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:57,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 82 transitions. [2021-10-28 09:23:57,392 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 82 transitions. Word has length 32 [2021-10-28 09:23:57,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:57,392 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 82 transitions. [2021-10-28 09:23:57,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:57,393 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 82 transitions. [2021-10-28 09:23:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:23:57,394 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:57,394 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:57,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:57,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:57,620 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:57,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:57,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1230314914, now seen corresponding path program 1 times [2021-10-28 09:23:57,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:57,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153835532] [2021-10-28 09:23:57,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:57,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:57,632 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:57,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325420916] [2021-10-28 09:23:57,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:57,633 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:57,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:57,641 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:57,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 09:23:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:23:57,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:23:57,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:58,308 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:58,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:58,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153835532] [2021-10-28 09:23:58,309 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:58,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325420916] [2021-10-28 09:23:58,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325420916] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:58,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:23:58,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:23:58,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518531208] [2021-10-28 09:23:58,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:23:58,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:58,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:23:58,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:23:58,312 INFO L87 Difference]: Start difference. First operand 79 states and 82 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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) [2021-10-28 09:23:59,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:59,015 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2021-10-28 09:23:59,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:23:59,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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) Word has length 33 [2021-10-28 09:23:59,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:59,017 INFO L225 Difference]: With dead ends: 82 [2021-10-28 09:23:59,017 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 09:23:59,018 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:23:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 09:23:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2021-10-28 09:23:59,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.171875) internal successors, (75), 72 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) [2021-10-28 09:23:59,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2021-10-28 09:23:59,025 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 33 [2021-10-28 09:23:59,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:59,026 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2021-10-28 09:23:59,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 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) [2021-10-28 09:23:59,026 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2021-10-28 09:23:59,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-28 09:23:59,027 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:59,027 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:23:59,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:59,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 09:23:59,248 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:59,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1900165254, now seen corresponding path program 2 times [2021-10-28 09:23:59,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:59,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351108230] [2021-10-28 09:23:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:59,249 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:59,264 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:59,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887139897] [2021-10-28 09:23:59,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:23:59,264 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:59,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:59,277 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:59,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 09:23:59,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:23:59,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:23:59,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:23:59,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:23:59,628 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:23:59,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:23:59,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351108230] [2021-10-28 09:23:59,629 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:23:59,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887139897] [2021-10-28 09:23:59,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887139897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:23:59,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:23:59,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-28 09:23:59,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444101410] [2021-10-28 09:23:59,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:23:59,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:23:59,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:23:59,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:23:59,631 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) [2021-10-28 09:23:59,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:23:59,659 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2021-10-28 09:23:59,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:23:59,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) Word has length 33 [2021-10-28 09:23:59,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:23:59,661 INFO L225 Difference]: With dead ends: 95 [2021-10-28 09:23:59,661 INFO L226 Difference]: Without dead ends: 73 [2021-10-28 09:23:59,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:23:59,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-28 09:23:59,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-28 09:23:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 64 states have (on average 1.15625) internal successors, (74), 72 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:23:59,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2021-10-28 09:23:59,669 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 33 [2021-10-28 09:23:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:23:59,669 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2021-10-28 09:23:59,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 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) [2021-10-28 09:23:59,669 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2021-10-28 09:23:59,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:23:59,670 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:23:59,670 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 09:23:59,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:23:59,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 09:23:59,889 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:23:59,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:23:59,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1367719072, now seen corresponding path program 2 times [2021-10-28 09:23:59,890 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:23:59,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43885089] [2021-10-28 09:23:59,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:23:59,890 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:23:59,900 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:23:59,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503814761] [2021-10-28 09:23:59,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:23:59,901 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:23:59,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:23:59,902 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:23:59,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 09:24:00,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:24:00,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:24:00,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:24:00,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:24:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:24:00,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:24:00,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43885089] [2021-10-28 09:24:00,760 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:24:00,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503814761] [2021-10-28 09:24:00,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503814761] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:24:00,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:24:00,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:24:00,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914831712] [2021-10-28 09:24:00,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:24:00,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:24:00,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:24:00,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:24:00,762 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:01,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:01,315 INFO L93 Difference]: Finished difference Result 111 states and 113 transitions. [2021-10-28 09:24:01,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:24:01,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-28 09:24:01,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:01,316 INFO L225 Difference]: With dead ends: 111 [2021-10-28 09:24:01,317 INFO L226 Difference]: Without dead ends: 109 [2021-10-28 09:24:01,317 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:24:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-10-28 09:24:01,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 75. [2021-10-28 09:24:01,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 74 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:01,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2021-10-28 09:24:01,326 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 34 [2021-10-28 09:24:01,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:01,327 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2021-10-28 09:24:01,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:01,327 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2021-10-28 09:24:01,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:24:01,328 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:01,328 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1] [2021-10-28 09:24:01,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:24:01,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-28 09:24:01,556 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:24:01,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:01,556 INFO L85 PathProgramCache]: Analyzing trace with hash 118191875, now seen corresponding path program 2 times [2021-10-28 09:24:01,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:24:01,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472292043] [2021-10-28 09:24:01,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:01,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:24:01,568 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:24:01,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636973373] [2021-10-28 09:24:01,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:24:01,569 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:24:01,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:24:01,586 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:24:01,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 09:24:01,948 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:24:01,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:24:01,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-28 09:24:01,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:24:05,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 09:24:05,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:24:05,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472292043] [2021-10-28 09:24:05,512 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:24:05,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636973373] [2021-10-28 09:24:05,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636973373] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:24:05,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:24:05,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:24:05,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899023058] [2021-10-28 09:24:05,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:24:05,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:24:05,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:24:05,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:24:05,514 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:47,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:47,057 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2021-10-28 09:24:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:24:47,058 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have 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 [2021-10-28 09:24:47,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:47,059 INFO L225 Difference]: With dead ends: 75 [2021-10-28 09:24:47,059 INFO L226 Difference]: Without dead ends: 67 [2021-10-28 09:24:47,059 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=56, Invalid=153, Unknown=1, NotChecked=0, Total=210 [2021-10-28 09:24:47,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-28 09:24:47,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-10-28 09:24:47,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.096774193548387) internal successors, (68), 66 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2021-10-28 09:24:47,085 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 36 [2021-10-28 09:24:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:47,085 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2021-10-28 09:24:47,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:47,086 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2021-10-28 09:24:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-28 09:24:47,086 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:47,087 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:47,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:24:47,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-28 09:24:47,304 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:24:47,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:47,305 INFO L85 PathProgramCache]: Analyzing trace with hash -230259065, now seen corresponding path program 2 times [2021-10-28 09:24:47,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:24:47,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394196067] [2021-10-28 09:24:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:47,305 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:24:47,319 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:24:47,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843525687] [2021-10-28 09:24:47,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:24:47,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:24:47,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:24:47,321 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:24:47,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:24:47,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:24:47,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:24:47,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-28 09:24:47,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:24:48,848 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:24:48,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:24:48,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394196067] [2021-10-28 09:24:48,849 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:24:48,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843525687] [2021-10-28 09:24:48,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843525687] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:24:48,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:24:48,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 09:24:48,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358674386] [2021-10-28 09:24:48,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:24:48,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:24:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:24:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:24:48,852 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:24:49,289 INFO L93 Difference]: Finished difference Result 92 states and 93 transitions. [2021-10-28 09:24:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:24:49,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-28 09:24:49,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:24:49,291 INFO L225 Difference]: With dead ends: 92 [2021-10-28 09:24:49,291 INFO L226 Difference]: Without dead ends: 90 [2021-10-28 09:24:49,291 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:24:49,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-10-28 09:24:49,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 76. [2021-10-28 09:24:49,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 75 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) [2021-10-28 09:24:49,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2021-10-28 09:24:49,306 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 43 [2021-10-28 09:24:49,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:24:49,306 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2021-10-28 09:24:49,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:24:49,306 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2021-10-28 09:24:49,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 09:24:49,307 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:24:49,307 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:24:49,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:24:49,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-28 09:24:49,514 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:24:49,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:24:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash 2059495850, now seen corresponding path program 2 times [2021-10-28 09:24:49,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:24:49,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163236655] [2021-10-28 09:24:49,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:24:49,515 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:24:49,528 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:24:49,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863761394] [2021-10-28 09:24:49,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:24:49,529 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:24:49,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:24:49,530 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:24:49,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 09:24:52,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:24:52,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:24:52,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-28 09:24:52,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:04,635 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 09:25:04,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:04,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163236655] [2021-10-28 09:25:04,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:25:04,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863761394] [2021-10-28 09:25:04,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863761394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:25:04,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:25:04,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-10-28 09:25:04,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070244209] [2021-10-28 09:25:04,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:25:04,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:04,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:25:04,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:25:04,639 INFO L87 Difference]: Start difference. First operand 76 states and 78 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:56,489 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2021-10-28 09:25:56,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:25:56,490 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-28 09:25:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:25:56,491 INFO L225 Difference]: With dead ends: 96 [2021-10-28 09:25:56,491 INFO L226 Difference]: Without dead ends: 82 [2021-10-28 09:25:56,491 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:25:56,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-28 09:25:56,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-10-28 09:25:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 79 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:56,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2021-10-28 09:25:56,503 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 45 [2021-10-28 09:25:56,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:25:56,503 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2021-10-28 09:25:56,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:56,504 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2021-10-28 09:25:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 09:25:56,504 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:25:56,504 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:25:56,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:56,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:56,713 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:25:56,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:56,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1070984318, now seen corresponding path program 3 times [2021-10-28 09:25:56,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:56,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018098628] [2021-10-28 09:25:56,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:56,714 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:56,727 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:25:56,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317763197] [2021-10-28 09:25:56,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:25:56,727 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:56,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:56,728 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:56,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:25:57,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 09:25:57,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:25:57,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:25:57,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:57,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:57,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018098628] [2021-10-28 09:25:57,452 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:25:57,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317763197] [2021-10-28 09:25:57,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317763197] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:57,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:25:57,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-28 09:25:57,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89636083] [2021-10-28 09:25:57,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:25:57,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:57,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:25:57,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:25:57,453 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:25:57,511 INFO L93 Difference]: Finished difference Result 104 states and 105 transitions. [2021-10-28 09:25:57,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:25:57,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-10-28 09:25:57,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:25:57,512 INFO L225 Difference]: With dead ends: 104 [2021-10-28 09:25:57,513 INFO L226 Difference]: Without dead ends: 94 [2021-10-28 09:25:57,513 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:25:57,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-28 09:25:57,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 82. [2021-10-28 09:25:57,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 78 states have (on average 1.0769230769230769) internal successors, (84), 81 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) [2021-10-28 09:25:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2021-10-28 09:25:57,530 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 45 [2021-10-28 09:25:57,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:25:57,530 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2021-10-28 09:25:57,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:25:57,531 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2021-10-28 09:25:57,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 09:25:57,532 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:25:57,532 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:25:57,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:25:57,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 09:25:57,760 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:25:57,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:25:57,761 INFO L85 PathProgramCache]: Analyzing trace with hash -804253331, now seen corresponding path program 1 times [2021-10-28 09:25:57,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:25:57,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478741278] [2021-10-28 09:25:57,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:57,761 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:25:57,783 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:25:57,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1013151139] [2021-10-28 09:25:57,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:25:57,785 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:25:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:25:57,786 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:25:57,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-28 09:25:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:25:58,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-28 09:25:58,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:25:59,412 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:25:59,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:25:59,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478741278] [2021-10-28 09:25:59,412 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:25:59,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013151139] [2021-10-28 09:25:59,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013151139] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:25:59,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:25:59,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 09:25:59,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750058103] [2021-10-28 09:25:59,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:25:59,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:25:59,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:25:59,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:25:59,414 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:00,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:26:00,443 INFO L93 Difference]: Finished difference Result 94 states and 95 transitions. [2021-10-28 09:26:00,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:26:00,444 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-10-28 09:26:00,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:26:00,445 INFO L225 Difference]: With dead ends: 94 [2021-10-28 09:26:00,445 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 09:26:00,445 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:26:00,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 09:26:00,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-28 09:26:00,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 77 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:00,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2021-10-28 09:26:00,461 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 47 [2021-10-28 09:26:00,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:26:00,461 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2021-10-28 09:26:00,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:00,462 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2021-10-28 09:26:00,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-28 09:26:00,462 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:26:00,462 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:00,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-28 09:26:00,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:26:00,680 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:26:00,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:00,681 INFO L85 PathProgramCache]: Analyzing trace with hash -655791985, now seen corresponding path program 3 times [2021-10-28 09:26:00,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:00,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426895651] [2021-10-28 09:26:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:00,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:00,695 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:26:00,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [828247475] [2021-10-28 09:26:00,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:26:00,695 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:26:00,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:26:00,697 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:26:00,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-28 09:26:02,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:26:02,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:26:02,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:26:02,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:26:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-10-28 09:26:03,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:03,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426895651] [2021-10-28 09:26:03,017 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:26:03,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828247475] [2021-10-28 09:26:03,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828247475] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:26:03,018 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:26:03,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:26:03,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606778044] [2021-10-28 09:26:03,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:26:03,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:03,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:26:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:26:03,020 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:08,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:26:08,608 INFO L93 Difference]: Finished difference Result 80 states and 80 transitions. [2021-10-28 09:26:08,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:26:08,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-10-28 09:26:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:26:08,610 INFO L225 Difference]: With dead ends: 80 [2021-10-28 09:26:08,610 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 09:26:08,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=48, Invalid=107, Unknown=1, NotChecked=0, Total=156 [2021-10-28 09:26:08,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 09:26:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-10-28 09:26:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 74 states have (on average 1.054054054054054) internal successors, (78), 77 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:08,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions. [2021-10-28 09:26:08,625 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 55 [2021-10-28 09:26:08,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:26:08,625 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions. [2021-10-28 09:26:08,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:08,625 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions. [2021-10-28 09:26:08,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-10-28 09:26:08,626 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:26:08,626 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:08,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-28 09:26:08,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:26:08,826 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:26:08,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:08,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1986227318, now seen corresponding path program 4 times [2021-10-28 09:26:08,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:08,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904960121] [2021-10-28 09:26:08,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:08,827 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:08,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:26:08,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928838848] [2021-10-28 09:26:08,837 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:26:08,837 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:26:08,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:26:08,839 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:26:08,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-28 09:26:09,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:26:09,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:26:09,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:26:09,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:26:09,596 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:26:09,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:26:09,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904960121] [2021-10-28 09:26:09,597 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:26:09,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928838848] [2021-10-28 09:26:09,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928838848] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:26:09,597 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:26:09,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-28 09:26:09,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514199364] [2021-10-28 09:26:09,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:26:09,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:26:09,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:26:09,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:26:09,599 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:09,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:26:09,674 INFO L93 Difference]: Finished difference Result 116 states and 116 transitions. [2021-10-28 09:26:09,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:26:09,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-10-28 09:26:09,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:26:09,675 INFO L225 Difference]: With dead ends: 116 [2021-10-28 09:26:09,676 INFO L226 Difference]: Without dead ends: 106 [2021-10-28 09:26:09,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:26:09,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-28 09:26:09,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 90. [2021-10-28 09:26:09,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 86 states have (on average 1.058139534883721) internal successors, (91), 89 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) [2021-10-28 09:26:09,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2021-10-28 09:26:09,691 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 57 [2021-10-28 09:26:09,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:26:09,692 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2021-10-28 09:26:09,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:26:09,692 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2021-10-28 09:26:09,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-28 09:26:09,692 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:26:09,692 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:26:09,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-28 09:26:09,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-28 09:26:09,893 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:26:09,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:26:09,893 INFO L85 PathProgramCache]: Analyzing trace with hash 115519349, now seen corresponding path program 2 times [2021-10-28 09:26:09,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:26:09,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732884262] [2021-10-28 09:26:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:26:09,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:26:09,910 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:26:09,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896065323] [2021-10-28 09:26:09,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:26:09,911 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:26:09,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:26:09,912 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:26:09,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-28 09:26:15,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-28 09:26:15,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:26:15,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-28 09:26:15,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:27:23,086 WARN L207 SmtUtils]: Spent 23.64 s on a formula simplification that was a NOOP. DAG size: 67 [2021-10-28 09:28:02,488 WARN L207 SmtUtils]: Spent 10.11 s on a formula simplification that was a NOOP. DAG size: 54 [2021-10-28 09:28:14,474 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-10-28 09:28:14,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:28:14,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732884262] [2021-10-28 09:28:14,475 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:28:14,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896065323] [2021-10-28 09:28:14,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896065323] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:28:14,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:28:14,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-10-28 09:28:14,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594655628] [2021-10-28 09:28:14,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 09:28:14,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:28:14,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 09:28:14,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=170, Unknown=15, NotChecked=0, Total=240 [2021-10-28 09:28:14,477 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:28:54,653 WARN L207 SmtUtils]: Spent 40.08 s on a formula simplification. DAG size of input: 90 DAG size of output: 66 [2021-10-28 09:31:09,658 WARN L207 SmtUtils]: Spent 9.91 s on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2021-10-28 09:31:40,157 WARN L207 SmtUtils]: Spent 18.48 s on a formula simplification. DAG size of input: 102 DAG size of output: 64 [2021-10-28 09:32:14,617 WARN L207 SmtUtils]: Spent 17.22 s on a formula simplification. DAG size of input: 91 DAG size of output: 60 [2021-10-28 09:33:03,862 WARN L207 SmtUtils]: Spent 29.60 s on a formula simplification. DAG size of input: 96 DAG size of output: 60 [2021-10-28 09:33:50,555 WARN L207 SmtUtils]: Spent 21.09 s on a formula simplification. DAG size of input: 99 DAG size of output: 65 [2021-10-28 09:34:29,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:29,866 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2021-10-28 09:34:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:34:29,873 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-28 09:34:29,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:29,874 INFO L225 Difference]: With dead ends: 90 [2021-10-28 09:34:29,874 INFO L226 Difference]: Without dead ends: 74 [2021-10-28 09:34:29,874 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 47 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 262.1s TimeCoverageRelationStatistics Valid=168, Invalid=351, Unknown=33, NotChecked=0, Total=552 [2021-10-28 09:34:29,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-28 09:34:29,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-28 09:34:29,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:29,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2021-10-28 09:34:29,889 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 59 [2021-10-28 09:34:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:29,889 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2021-10-28 09:34:29,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2021-10-28 09:34:29,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-28 09:34:29,890 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:29,890 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:29,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:30,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-28 09:34:30,100 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:30,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:30,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1352185966, now seen corresponding path program 5 times [2021-10-28 09:34:30,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:30,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358493621] [2021-10-28 09:34:30,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:30,101 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:30,119 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:30,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149025190] [2021-10-28 09:34:30,119 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:34:30,119 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:30,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:30,124 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:30,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-28 09:34:30,828 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-28 09:34:30,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:34:30,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 09:34:30,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 130 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:31,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:31,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358493621] [2021-10-28 09:34:31,091 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:31,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149025190] [2021-10-28 09:34:31,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149025190] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:31,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:31,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-28 09:34:31,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843056318] [2021-10-28 09:34:31,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:34:31,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:31,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:34:31,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:34:31,093 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:31,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:31,176 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2021-10-28 09:34:31,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:34:31,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-10-28 09:34:31,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:31,177 INFO L225 Difference]: With dead ends: 96 [2021-10-28 09:34:31,177 INFO L226 Difference]: Without dead ends: 86 [2021-10-28 09:34:31,178 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:34:31,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-28 09:34:31,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-10-28 09:34:31,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 84 states have (on average 1.0238095238095237) internal successors, (86), 85 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:31,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2021-10-28 09:34:31,197 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 69 [2021-10-28 09:34:31,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:31,198 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2021-10-28 09:34:31,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:31,198 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2021-10-28 09:34:31,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-10-28 09:34:31,199 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:31,199 INFO L513 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:31,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-10-28 09:34:31,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-28 09:34:31,420 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:31,421 INFO L85 PathProgramCache]: Analyzing trace with hash 182202266, now seen corresponding path program 6 times [2021-10-28 09:34:31,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:31,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117743378] [2021-10-28 09:34:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:31,421 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:31,438 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:31,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [921996013] [2021-10-28 09:34:31,438 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:34:31,439 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:31,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:31,441 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:31,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-28 09:34:33,327 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-28 09:34:33,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:34:33,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-28 09:34:33,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:33,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:33,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117743378] [2021-10-28 09:34:33,659 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:33,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921996013] [2021-10-28 09:34:33,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921996013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:33,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:33,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-28 09:34:33,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952106127] [2021-10-28 09:34:33,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:34:33,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:33,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:34:33,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:34:33,661 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:33,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:33,758 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2021-10-28 09:34:33,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-28 09:34:33,758 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-10-28 09:34:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:33,759 INFO L225 Difference]: With dead ends: 108 [2021-10-28 09:34:33,759 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 09:34:33,759 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:34:33,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 09:34:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-10-28 09:34:33,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 97 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) [2021-10-28 09:34:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions. [2021-10-28 09:34:33,778 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 81 [2021-10-28 09:34:33,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:33,778 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions. [2021-10-28 09:34:33,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions. [2021-10-28 09:34:33,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-28 09:34:33,780 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:33,780 INFO L513 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:33,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:33,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:33,990 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:33,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:33,990 INFO L85 PathProgramCache]: Analyzing trace with hash 172837794, now seen corresponding path program 7 times [2021-10-28 09:34:33,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:33,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683263648] [2021-10-28 09:34:33,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:33,991 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:34,016 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:34,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572137245] [2021-10-28 09:34:34,017 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:34:34,017 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:34,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:34,017 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:34,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-28 09:34:34,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:34,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 09:34:34,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:35,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:35,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683263648] [2021-10-28 09:34:35,128 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:35,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572137245] [2021-10-28 09:34:35,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572137245] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:35,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:35,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-10-28 09:34:35,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378011676] [2021-10-28 09:34:35,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:34:35,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:35,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:34:35,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:34:35,129 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:35,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:35,255 INFO L93 Difference]: Finished difference Result 120 states and 120 transitions. [2021-10-28 09:34:35,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:34:35,256 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2021-10-28 09:34:35,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:35,257 INFO L225 Difference]: With dead ends: 120 [2021-10-28 09:34:35,257 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 09:34:35,258 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:34:35,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 09:34:35,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-28 09:34:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 108 states have (on average 1.0185185185185186) internal successors, (110), 109 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:35,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions. [2021-10-28 09:34:35,280 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 93 [2021-10-28 09:34:35,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:35,280 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions. [2021-10-28 09:34:35,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.454545454545455) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions. [2021-10-28 09:34:35,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 09:34:35,281 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:35,281 INFO L513 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:35,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:35,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-28 09:34:35,482 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:35,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:35,482 INFO L85 PathProgramCache]: Analyzing trace with hash 822909866, now seen corresponding path program 8 times [2021-10-28 09:34:35,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:35,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124835583] [2021-10-28 09:34:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:35,483 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:35,492 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:35,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132203289] [2021-10-28 09:34:35,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:34:35,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:35,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:35,493 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:35,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-28 09:34:36,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:34:36,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:34:36,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 09:34:36,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:36,687 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:36,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:36,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124835583] [2021-10-28 09:34:36,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:36,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132203289] [2021-10-28 09:34:36,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132203289] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:36,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:36,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-28 09:34:36,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769861188] [2021-10-28 09:34:36,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:34:36,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:36,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:34:36,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:34:36,689 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 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) [2021-10-28 09:34:36,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:36,840 INFO L93 Difference]: Finished difference Result 132 states and 132 transitions. [2021-10-28 09:34:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-28 09:34:36,841 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 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 105 [2021-10-28 09:34:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:36,842 INFO L225 Difference]: With dead ends: 132 [2021-10-28 09:34:36,842 INFO L226 Difference]: Without dead ends: 122 [2021-10-28 09:34:36,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:34:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-28 09:34:36,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-10-28 09:34:36,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 120 states have (on average 1.0166666666666666) internal successors, (122), 121 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:36,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2021-10-28 09:34:36,877 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 105 [2021-10-28 09:34:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:36,877 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2021-10-28 09:34:36,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.75) internal successors, (105), 11 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) [2021-10-28 09:34:36,878 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2021-10-28 09:34:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-10-28 09:34:36,879 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:36,879 INFO L513 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:36,921 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:37,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:37,092 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:37,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:37,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1754521678, now seen corresponding path program 9 times [2021-10-28 09:34:37,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:37,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767722181] [2021-10-28 09:34:37,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:37,093 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:37,110 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:37,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073746785] [2021-10-28 09:34:37,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:34:37,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:37,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:37,112 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:37,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-28 09:34:38,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-28 09:34:38,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:34:38,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-28 09:34:38,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:38,503 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:38,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:38,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767722181] [2021-10-28 09:34:38,503 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:38,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073746785] [2021-10-28 09:34:38,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073746785] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:38,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:38,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-28 09:34:38,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434319497] [2021-10-28 09:34:38,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:34:38,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:38,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:34:38,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:34:38,506 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:38,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:38,709 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2021-10-28 09:34:38,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 09:34:38,709 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-10-28 09:34:38,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:38,711 INFO L225 Difference]: With dead ends: 144 [2021-10-28 09:34:38,711 INFO L226 Difference]: Without dead ends: 134 [2021-10-28 09:34:38,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:34:38,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-28 09:34:38,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-28 09:34:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 132 states have (on average 1.0151515151515151) internal successors, (134), 133 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions. [2021-10-28 09:34:38,733 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 117 [2021-10-28 09:34:38,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:38,734 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions. [2021-10-28 09:34:38,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.0) internal successors, (117), 12 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:38,734 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions. [2021-10-28 09:34:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-10-28 09:34:38,735 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:38,735 INFO L513 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:38,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:38,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-28 09:34:38,948 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:38,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1790826426, now seen corresponding path program 10 times [2021-10-28 09:34:38,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:38,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34738553] [2021-10-28 09:34:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:38,949 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:38,959 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:38,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150225070] [2021-10-28 09:34:38,960 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:34:38,960 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:38,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:38,961 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:38,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-28 09:34:39,963 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:34:39,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:34:39,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-28 09:34:39,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:40,477 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:40,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:40,477 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34738553] [2021-10-28 09:34:40,478 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:40,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150225070] [2021-10-28 09:34:40,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150225070] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:40,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:40,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-28 09:34:40,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342753841] [2021-10-28 09:34:40,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:34:40,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:40,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:34:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:34:40,480 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:40,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:40,648 INFO L93 Difference]: Finished difference Result 156 states and 156 transitions. [2021-10-28 09:34:40,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-28 09:34:40,648 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-10-28 09:34:40,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:40,649 INFO L225 Difference]: With dead ends: 156 [2021-10-28 09:34:40,649 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 09:34:40,650 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=342, Unknown=0, NotChecked=0, Total=552 [2021-10-28 09:34:40,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 09:34:40,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2021-10-28 09:34:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 144 states have (on average 1.0138888888888888) internal successors, (146), 145 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:40,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions. [2021-10-28 09:34:40,675 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 129 [2021-10-28 09:34:40,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:40,675 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions. [2021-10-28 09:34:40,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.214285714285714) internal successors, (129), 13 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:40,675 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions. [2021-10-28 09:34:40,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-10-28 09:34:40,676 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:40,676 INFO L513 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:40,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:40,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-28 09:34:40,877 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1834206146, now seen corresponding path program 11 times [2021-10-28 09:34:40,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:40,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72343528] [2021-10-28 09:34:40,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:40,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:40,894 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:40,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839626593] [2021-10-28 09:34:40,894 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:34:40,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:40,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:40,895 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:40,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-28 09:34:46,445 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-28 09:34:46,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:34:46,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-28 09:34:46,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 682 backedges. 0 proven. 682 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:47,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:47,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72343528] [2021-10-28 09:34:47,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:47,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839626593] [2021-10-28 09:34:47,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839626593] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:47,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:47,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-28 09:34:47,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713200920] [2021-10-28 09:34:47,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:34:47,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:47,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:34:47,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:34:47,032 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:47,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:47,296 INFO L93 Difference]: Finished difference Result 168 states and 168 transitions. [2021-10-28 09:34:47,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-28 09:34:47,297 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2021-10-28 09:34:47,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:47,299 INFO L225 Difference]: With dead ends: 168 [2021-10-28 09:34:47,299 INFO L226 Difference]: Without dead ends: 158 [2021-10-28 09:34:47,302 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=403, Unknown=0, NotChecked=0, Total=650 [2021-10-28 09:34:47,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-28 09:34:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-10-28 09:34:47,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 156 states have (on average 1.0128205128205128) internal successors, (158), 157 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:47,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2021-10-28 09:34:47,340 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 141 [2021-10-28 09:34:47,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:47,340 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2021-10-28 09:34:47,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 9.4) internal successors, (141), 14 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:47,341 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2021-10-28 09:34:47,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-10-28 09:34:47,342 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:47,342 INFO L513 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:47,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:47,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-10-28 09:34:47,555 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:47,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:47,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1988092874, now seen corresponding path program 12 times [2021-10-28 09:34:47,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:47,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453023136] [2021-10-28 09:34:47,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:47,556 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:47,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:47,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102752028] [2021-10-28 09:34:47,576 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:34:47,577 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:47,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:47,583 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:47,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-28 09:34:48,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-28 09:34:48,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:34:48,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-28 09:34:48,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 0 proven. 816 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:49,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:49,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453023136] [2021-10-28 09:34:49,189 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:49,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102752028] [2021-10-28 09:34:49,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102752028] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:49,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:49,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-28 09:34:49,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219828549] [2021-10-28 09:34:49,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 09:34:49,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:49,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 09:34:49,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:34:49,191 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:49,415 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2021-10-28 09:34:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-28 09:34:49,415 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2021-10-28 09:34:49,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:49,417 INFO L225 Difference]: With dead ends: 180 [2021-10-28 09:34:49,417 INFO L226 Difference]: Without dead ends: 170 [2021-10-28 09:34:49,417 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=287, Invalid=469, Unknown=0, NotChecked=0, Total=756 [2021-10-28 09:34:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-28 09:34:49,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-10-28 09:34:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 168 states have (on average 1.0119047619047619) internal successors, (170), 169 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:49,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions. [2021-10-28 09:34:49,453 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 153 [2021-10-28 09:34:49,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:49,453 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions. [2021-10-28 09:34:49,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 9.5625) internal successors, (153), 15 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:49,454 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions. [2021-10-28 09:34:49,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-10-28 09:34:49,455 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:49,455 INFO L513 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:49,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:49,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:49,680 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:49,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:49,680 INFO L85 PathProgramCache]: Analyzing trace with hash -225167406, now seen corresponding path program 13 times [2021-10-28 09:34:49,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:49,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833125420] [2021-10-28 09:34:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:49,681 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:49,692 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:49,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2142082865] [2021-10-28 09:34:49,693 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:34:49,693 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:49,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:49,694 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:49,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-28 09:34:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:34:50,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-28 09:34:50,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:51,365 INFO L134 CoverageAnalysis]: Checked inductivity of 962 backedges. 0 proven. 962 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:51,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:51,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833125420] [2021-10-28 09:34:51,366 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:51,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142082865] [2021-10-28 09:34:51,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142082865] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:51,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:51,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-10-28 09:34:51,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162404041] [2021-10-28 09:34:51,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 09:34:51,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:51,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 09:34:51,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:34:51,368 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 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) [2021-10-28 09:34:51,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:51,654 INFO L93 Difference]: Finished difference Result 192 states and 192 transitions. [2021-10-28 09:34:51,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-28 09:34:51,668 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 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 165 [2021-10-28 09:34:51,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:51,673 INFO L225 Difference]: With dead ends: 192 [2021-10-28 09:34:51,673 INFO L226 Difference]: Without dead ends: 182 [2021-10-28 09:34:51,674 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=540, Unknown=0, NotChecked=0, Total=870 [2021-10-28 09:34:51,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-28 09:34:51,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-10-28 09:34:51,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 180 states have (on average 1.011111111111111) internal successors, (182), 181 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:51,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 182 transitions. [2021-10-28 09:34:51,698 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 182 transitions. Word has length 165 [2021-10-28 09:34:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:51,699 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 182 transitions. [2021-10-28 09:34:51,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.705882352941176) internal successors, (165), 16 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) [2021-10-28 09:34:51,699 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 182 transitions. [2021-10-28 09:34:51,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-10-28 09:34:51,699 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:51,700 INFO L513 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:51,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:51,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-10-28 09:34:51,900 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:51,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:51,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1659027418, now seen corresponding path program 14 times [2021-10-28 09:34:51,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:51,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379879461] [2021-10-28 09:34:51,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:51,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:51,915 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:51,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [950187795] [2021-10-28 09:34:51,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:34:51,915 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:51,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:51,917 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:51,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-28 09:34:52,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:34:52,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:34:52,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-28 09:34:52,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:53,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1120 backedges. 0 proven. 1120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:53,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:53,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379879461] [2021-10-28 09:34:53,807 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:53,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [950187795] [2021-10-28 09:34:53,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [950187795] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:53,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:53,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-10-28 09:34:53,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376691121] [2021-10-28 09:34:53,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-28 09:34:53,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:53,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-28 09:34:53,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:34:53,810 INFO L87 Difference]: Start difference. First operand 182 states and 182 transitions. Second operand has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:54,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:54,085 INFO L93 Difference]: Finished difference Result 204 states and 204 transitions. [2021-10-28 09:34:54,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-28 09:34:54,086 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2021-10-28 09:34:54,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:54,087 INFO L225 Difference]: With dead ends: 204 [2021-10-28 09:34:54,088 INFO L226 Difference]: Without dead ends: 194 [2021-10-28 09:34:54,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=376, Invalid=616, Unknown=0, NotChecked=0, Total=992 [2021-10-28 09:34:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-28 09:34:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2021-10-28 09:34:54,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 193 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2021-10-28 09:34:54,128 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 177 [2021-10-28 09:34:54,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:54,129 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2021-10-28 09:34:54,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 9.833333333333334) internal successors, (177), 17 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:54,129 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2021-10-28 09:34:54,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-10-28 09:34:54,130 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:54,130 INFO L513 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:54,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:54,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-10-28 09:34:54,356 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:54,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:54,357 INFO L85 PathProgramCache]: Analyzing trace with hash -574784542, now seen corresponding path program 15 times [2021-10-28 09:34:54,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:54,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481982234] [2021-10-28 09:34:54,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:54,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:54,420 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:54,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888828067] [2021-10-28 09:34:54,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:34:54,421 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:54,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:54,422 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:54,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-28 09:34:55,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-10-28 09:34:55,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:34:55,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-28 09:34:55,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1290 backedges. 0 proven. 1290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:56,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:56,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481982234] [2021-10-28 09:34:56,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:56,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888828067] [2021-10-28 09:34:56,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888828067] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:56,486 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:56,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-28 09:34:56,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182681932] [2021-10-28 09:34:56,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:34:56,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:56,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:34:56,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:34:56,488 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 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) [2021-10-28 09:34:56,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:56,802 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2021-10-28 09:34:56,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-28 09:34:56,804 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 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 189 [2021-10-28 09:34:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:56,805 INFO L225 Difference]: With dead ends: 216 [2021-10-28 09:34:56,805 INFO L226 Difference]: Without dead ends: 206 [2021-10-28 09:34:56,806 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=425, Invalid=697, Unknown=0, NotChecked=0, Total=1122 [2021-10-28 09:34:56,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-28 09:34:56,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-10-28 09:34:56,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 204 states have (on average 1.0098039215686274) internal successors, (206), 205 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:56,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 206 transitions. [2021-10-28 09:34:56,838 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 206 transitions. Word has length 189 [2021-10-28 09:34:56,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:56,839 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 206 transitions. [2021-10-28 09:34:56,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.947368421052632) internal successors, (189), 18 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) [2021-10-28 09:34:56,840 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 206 transitions. [2021-10-28 09:34:56,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-10-28 09:34:56,841 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:56,841 INFO L513 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:56,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:57,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:57,060 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:57,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:57,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1904841750, now seen corresponding path program 16 times [2021-10-28 09:34:57,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:57,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667764013] [2021-10-28 09:34:57,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:57,061 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:57,088 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:57,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241445111] [2021-10-28 09:34:57,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:34:57,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:57,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:57,090 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:57,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-28 09:34:58,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:34:58,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:34:58,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-28 09:34:58,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:34:59,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1472 backedges. 0 proven. 1472 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:34:59,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:34:59,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667764013] [2021-10-28 09:34:59,118 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:34:59,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241445111] [2021-10-28 09:34:59,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241445111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:34:59,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:34:59,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-10-28 09:34:59,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582722073] [2021-10-28 09:34:59,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 09:34:59,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:34:59,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 09:34:59,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:34:59,120 INFO L87 Difference]: Start difference. First operand 206 states and 206 transitions. Second operand has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:59,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:34:59,441 INFO L93 Difference]: Finished difference Result 228 states and 228 transitions. [2021-10-28 09:34:59,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-28 09:34:59,442 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 201 [2021-10-28 09:34:59,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:34:59,443 INFO L225 Difference]: With dead ends: 228 [2021-10-28 09:34:59,444 INFO L226 Difference]: Without dead ends: 218 [2021-10-28 09:34:59,444 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 09:34:59,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-28 09:34:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2021-10-28 09:34:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 216 states have (on average 1.0092592592592593) internal successors, (218), 217 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:59,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 218 transitions. [2021-10-28 09:34:59,488 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 218 transitions. Word has length 201 [2021-10-28 09:34:59,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:34:59,489 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 218 transitions. [2021-10-28 09:34:59,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.05) internal successors, (201), 19 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:34:59,489 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 218 transitions. [2021-10-28 09:34:59,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-10-28 09:34:59,490 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:34:59,491 INFO L513 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:34:59,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-28 09:34:59,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:59,716 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:34:59,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:34:59,716 INFO L85 PathProgramCache]: Analyzing trace with hash 895455218, now seen corresponding path program 17 times [2021-10-28 09:34:59,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:34:59,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061381645] [2021-10-28 09:34:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:34:59,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:34:59,736 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:34:59,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2121323159] [2021-10-28 09:34:59,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:34:59,737 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:34:59,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:34:59,738 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:34:59,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-28 09:35:03,209 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-28 09:35:03,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:35:03,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 723 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-28 09:35:03,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:35:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1666 backedges. 0 proven. 1666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:35:04,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:35:04,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061381645] [2021-10-28 09:35:04,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:35:04,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2121323159] [2021-10-28 09:35:04,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2121323159] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:35:04,092 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:35:04,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-10-28 09:35:04,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138975743] [2021-10-28 09:35:04,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 09:35:04,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:35:04,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 09:35:04,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:35:04,094 INFO L87 Difference]: Start difference. First operand 218 states and 218 transitions. Second operand has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:35:04,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:35:04,564 INFO L93 Difference]: Finished difference Result 240 states and 240 transitions. [2021-10-28 09:35:04,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-28 09:35:04,565 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 213 [2021-10-28 09:35:04,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:35:04,567 INFO L225 Difference]: With dead ends: 240 [2021-10-28 09:35:04,567 INFO L226 Difference]: Without dead ends: 230 [2021-10-28 09:35:04,568 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=532, Invalid=874, Unknown=0, NotChecked=0, Total=1406 [2021-10-28 09:35:04,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2021-10-28 09:35:04,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2021-10-28 09:35:04,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 228 states have (on average 1.0087719298245614) internal successors, (230), 229 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:35:04,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2021-10-28 09:35:04,613 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 213 [2021-10-28 09:35:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:35:04,613 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2021-10-28 09:35:04,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.142857142857142) internal successors, (213), 20 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:35:04,614 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2021-10-28 09:35:04,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-10-28 09:35:04,615 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:35:04,615 INFO L513 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:35:04,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-10-28 09:35:04,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-28 09:35:04,829 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:35:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:04,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1479874566, now seen corresponding path program 18 times [2021-10-28 09:35:04,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:04,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359879492] [2021-10-28 09:35:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:04,830 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:04,845 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:35:04,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866521087] [2021-10-28 09:35:04,845 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:35:04,845 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:35:04,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:35:04,846 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:35:04,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-28 09:35:06,829 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-28 09:35:06,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:35:06,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 762 conjuncts, 39 conjunts are in the unsatisfiable core [2021-10-28 09:35:06,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:35:07,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1872 backedges. 0 proven. 1872 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:35:07,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:35:07,797 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359879492] [2021-10-28 09:35:07,798 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:35:07,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866521087] [2021-10-28 09:35:07,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866521087] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:35:07,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:35:07,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-10-28 09:35:07,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478624348] [2021-10-28 09:35:07,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-28 09:35:07,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:35:07,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-28 09:35:07,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:35:07,801 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:35:08,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:35:08,209 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2021-10-28 09:35:08,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-28 09:35:08,209 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 225 [2021-10-28 09:35:08,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:35:08,211 INFO L225 Difference]: With dead ends: 252 [2021-10-28 09:35:08,211 INFO L226 Difference]: Without dead ends: 242 [2021-10-28 09:35:08,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=590, Invalid=970, Unknown=0, NotChecked=0, Total=1560 [2021-10-28 09:35:08,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-28 09:35:08,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-10-28 09:35:08,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 240 states have (on average 1.0083333333333333) internal successors, (242), 241 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:35:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 242 transitions. [2021-10-28 09:35:08,252 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 242 transitions. Word has length 225 [2021-10-28 09:35:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:35:08,253 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 242 transitions. [2021-10-28 09:35:08,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 10.227272727272727) internal successors, (225), 21 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:35:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 242 transitions. [2021-10-28 09:35:08,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-10-28 09:35:08,255 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:35:08,255 INFO L513 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:35:08,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-28 09:35:08,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-10-28 09:35:08,468 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:35:08,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:08,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1342862338, now seen corresponding path program 19 times [2021-10-28 09:35:08,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:08,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878007367] [2021-10-28 09:35:08,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:08,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:08,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:35:08,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [987239128] [2021-10-28 09:35:08,495 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:35:08,495 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:35:08,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:35:08,501 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:35:08,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-28 09:35:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:35:09,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-28 09:35:09,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:35:10,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2090 backedges. 0 proven. 2090 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:35:10,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:35:10,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878007367] [2021-10-28 09:35:10,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-28 09:35:10,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987239128] [2021-10-28 09:35:10,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987239128] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:35:10,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:35:10,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-10-28 09:35:10,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004459371] [2021-10-28 09:35:10,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:35:10,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:35:10,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:35:10,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:35:10,881 INFO L87 Difference]: Start difference. First operand 242 states and 242 transitions. Second operand has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:35:11,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:35:11,259 INFO L93 Difference]: Finished difference Result 264 states and 264 transitions. [2021-10-28 09:35:11,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-28 09:35:11,259 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2021-10-28 09:35:11,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:35:11,261 INFO L225 Difference]: With dead ends: 264 [2021-10-28 09:35:11,261 INFO L226 Difference]: Without dead ends: 254 [2021-10-28 09:35:11,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=651, Invalid=1071, Unknown=0, NotChecked=0, Total=1722 [2021-10-28 09:35:11,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-28 09:35:11,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2021-10-28 09:35:11,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 252 states have (on average 1.007936507936508) internal successors, (254), 253 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:35:11,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 254 transitions. [2021-10-28 09:35:11,312 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 254 transitions. Word has length 237 [2021-10-28 09:35:11,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:35:11,313 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 254 transitions. [2021-10-28 09:35:11,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 10.304347826086957) internal successors, (237), 22 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:35:11,313 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 254 transitions. [2021-10-28 09:35:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-10-28 09:35:11,315 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:35:11,315 INFO L513 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:35:11,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-28 09:35:11,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-10-28 09:35:11,530 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2021-10-28 09:35:11,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:35:11,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1385155574, now seen corresponding path program 20 times [2021-10-28 09:35:11,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:35:11,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365653379] [2021-10-28 09:35:11,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:35:11,531 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:35:11,546 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-28 09:35:11,547 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1497154365] [2021-10-28 09:35:11,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:35:11,547 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:35:11,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:35:11,548 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:35:11,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-28 09:35:13,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:35:13,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-10-28 09:35:13,052 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:35:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:35:13,468 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:35:13,469 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:35:13,470 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:35:13,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:35:13,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:35:13,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:35:13,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:35:13,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:35:13,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:35:13,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:35:13,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:35:13,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:35:13,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:35:13,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-10-28 09:35:13,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-28 09:35:13,688 INFO L731 BasicCegarLoop]: Path program histogram: [20, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-10-28 09:35:13,691 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:35:13,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:35:13 BoogieIcfgContainer [2021-10-28 09:35:13,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:35:13,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:35:13,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:35:13,866 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:35:13,866 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:48" (3/4) ... [2021-10-28 09:35:13,870 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:35:14,007 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:35:14,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:35:14,009 INFO L168 Benchmark]: Toolchain (without parser) took 685899.38 ms. Allocated memory was 117.4 MB in the beginning and 627.0 MB in the end (delta: 509.6 MB). Free memory was 92.3 MB in the beginning and 147.1 MB in the end (delta: -54.8 MB). Peak memory consumption was 456.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:35:14,009 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:35:14,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.66 ms. Allocated memory is still 117.4 MB. Free memory was 92.3 MB in the beginning and 81.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:35:14,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.37 ms. Allocated memory is still 117.4 MB. Free memory was 81.9 MB in the beginning and 80.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:35:14,010 INFO L168 Benchmark]: Boogie Preprocessor took 30.77 ms. Allocated memory is still 117.4 MB. Free memory was 80.2 MB in the beginning and 79.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:35:14,010 INFO L168 Benchmark]: RCFGBuilder took 457.08 ms. Allocated memory is still 117.4 MB. Free memory was 79.0 MB in the beginning and 67.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:35:14,011 INFO L168 Benchmark]: TraceAbstraction took 684932.09 ms. Allocated memory was 117.4 MB in the beginning and 627.0 MB in the end (delta: 509.6 MB). Free memory was 66.7 MB in the beginning and 160.8 MB in the end (delta: -94.0 MB). Peak memory consumption was 417.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:35:14,011 INFO L168 Benchmark]: Witness Printer took 143.20 ms. Allocated memory is still 627.0 MB. Free memory was 160.8 MB in the beginning and 147.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 09:35:14,018 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 86.0 MB. Free memory is still 53.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 283.66 ms. Allocated memory is still 117.4 MB. Free memory was 92.3 MB in the beginning and 81.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.37 ms. Allocated memory is still 117.4 MB. Free memory was 81.9 MB in the beginning and 80.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.77 ms. Allocated memory is still 117.4 MB. Free memory was 80.2 MB in the beginning and 79.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 457.08 ms. Allocated memory is still 117.4 MB. Free memory was 79.0 MB in the beginning and 67.1 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 684932.09 ms. Allocated memory was 117.4 MB in the beginning and 627.0 MB in the end (delta: 509.6 MB). Free memory was 66.7 MB in the beginning and 160.8 MB in the end (delta: -94.0 MB). Peak memory consumption was 417.0 MB. Max. memory is 16.1 GB. * Witness Printer took 143.20 ms. Allocated memory is still 627.0 MB. Free memory was 160.8 MB in the beginning and 147.1 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] short a; [L25] long long n, x, y, z; [L26] a = __VERIFIER_nondet_ushort() [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=1] [L33] EXPR counter++ VAL [counter=2] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=2] [L33] EXPR counter++ VAL [counter=3] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=3] [L33] EXPR counter++ VAL [counter=4] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=4] [L33] EXPR counter++ VAL [counter=5] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=5] [L33] EXPR counter++ VAL [counter=6] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=6] [L33] EXPR counter++ VAL [counter=7] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=7] [L33] EXPR counter++ VAL [counter=8] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=8] [L33] EXPR counter++ VAL [counter=9] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=9] [L33] EXPR counter++ VAL [counter=10] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=10] [L33] EXPR counter++ VAL [counter=11] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L15] COND FALSE !(!(cond)) VAL [counter=11] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=11] [L33] EXPR counter++ VAL [counter=12] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L15] COND FALSE !(!(cond)) VAL [counter=12] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=12] [L33] EXPR counter++ VAL [counter=13] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L15] COND FALSE !(!(cond)) VAL [counter=13] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=13] [L33] EXPR counter++ VAL [counter=14] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L15] COND FALSE !(!(cond)) VAL [counter=14] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=14] [L33] EXPR counter++ VAL [counter=15] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L15] COND FALSE !(!(cond)) VAL [counter=15] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=15] [L33] EXPR counter++ VAL [counter=16] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L15] COND FALSE !(!(cond)) VAL [counter=16] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=16] [L33] EXPR counter++ VAL [counter=17] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L15] COND FALSE !(!(cond)) VAL [counter=17] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=17] [L33] EXPR counter++ VAL [counter=18] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L15] COND FALSE !(!(cond)) VAL [counter=18] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=18] [L33] EXPR counter++ VAL [counter=19] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L15] COND FALSE !(!(cond)) VAL [counter=19] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=19] [L33] EXPR counter++ VAL [counter=20] [L33] COND TRUE counter++<20 [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L15] COND FALSE !(!(cond)) VAL [counter=20] [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 VAL [counter=20] [L33] EXPR counter++ VAL [counter=21] [L33] COND FALSE !(counter++<20) [L15] COND FALSE !(!(cond)) VAL [counter=21] [L15] COND TRUE !(cond) VAL [counter=21] [L17] reach_error() VAL [counter=21] - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 52 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 684.6s, OverallIterations: 38, TraceHistogramMax: 21, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 482.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1015 SDtfs, 881 SDslu, 4598 SDs, 0 SdLazy, 2712 SolverSat, 448 SolverUnsat, 94 SolverUnknown, 0 SolverNotchecked, 276.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3196 GetRequests, 2624 SyntacticMatches, 5 SemanticMatches, 567 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 296.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=254occurred in iteration=37, InterpolantAutomatonStates: 591, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 37 MinimizatonAttempts, 254 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 19.4s SatisfiabilityAnalysisTime, 151.7s InterpolantComputationTime, 3226 NumberOfCodeBlocks, 3118 NumberOfCodeBlocksAsserted, 145 NumberOfCheckSat, 2940 ConstructedInterpolants, 2 QuantifiedInterpolants, 16448 SizeOfPredicates, 308 NumberOfNonLiveVariables, 10373 ConjunctsInSsa, 777 ConjunctsInUnsatCore, 37 InterpolantComputations, 9 PerfectInterpolantSequences, 210/14435 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:35:14,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_025d96b2-7cd8-4ab8-b2c8-c9004df18b45/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...