./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt --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 a977b022b43b9a8549ddd4aa535fee7d8f5173c1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 00:42:31,681 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 00:42:31,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 00:42:31,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 00:42:31,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 00:42:31,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 00:42:31,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 00:42:31,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 00:42:31,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 00:42:31,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 00:42:31,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 00:42:31,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 00:42:31,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 00:42:31,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 00:42:31,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 00:42:31,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 00:42:31,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 00:42:31,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 00:42:31,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 00:42:31,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 00:42:31,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 00:42:31,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 00:42:31,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 00:42:31,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 00:42:31,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 00:42:31,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 00:42:31,754 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 00:42:31,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 00:42:31,756 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 00:42:31,757 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 00:42:31,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 00:42:31,759 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 00:42:31,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 00:42:31,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 00:42:31,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 00:42:31,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 00:42:31,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 00:42:31,764 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 00:42:31,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 00:42:31,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 00:42:31,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 00:42:31,767 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 00:42:31,804 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 00:42:31,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 00:42:31,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 00:42:31,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 00:42:31,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 00:42:31,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 00:42:31,806 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 00:42:31,807 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 00:42:31,807 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 00:42:31,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 00:42:31,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 00:42:31,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 00:42:31,808 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 00:42:31,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 00:42:31,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 00:42:31,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 00:42:31,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 00:42:31,812 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 00:42:31,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 00:42:31,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 00:42:31,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 00:42:31,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 00:42:31,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:42:31,815 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 00:42:31,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 00:42:31,816 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 00:42:31,816 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 00:42:31,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 00:42:31,816 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 00:42:31,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 00:42:31,817 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_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a977b022b43b9a8549ddd4aa535fee7d8f5173c1 [2021-10-13 00:42:32,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 00:42:32,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 00:42:32,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 00:42:32,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 00:42:32,142 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 00:42:32,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2021-10-13 00:42:32,232 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/data/bfb4d7531/c4271da1f0f34ad4a60c8f8fd3e2bcba/FLAG6c1f070de [2021-10-13 00:42:32,777 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 00:42:32,781 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2021-10-13 00:42:32,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/data/bfb4d7531/c4271da1f0f34ad4a60c8f8fd3e2bcba/FLAG6c1f070de [2021-10-13 00:42:33,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/data/bfb4d7531/c4271da1f0f34ad4a60c8f8fd3e2bcba [2021-10-13 00:42:33,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 00:42:33,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 00:42:33,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 00:42:33,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 00:42:33,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 00:42:33,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100574f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33, skipping insertion in model container [2021-10-13 00:42:33,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 00:42:33,167 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 00:42:33,338 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_e55803ee-5736-433b-97e1-18baefa4b038/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2021-10-13 00:42:33,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:42:33,368 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 00:42:33,379 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_e55803ee-5736-433b-97e1-18baefa4b038/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2021-10-13 00:42:33,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 00:42:33,403 INFO L208 MainTranslator]: Completed translation [2021-10-13 00:42:33,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33 WrapperNode [2021-10-13 00:42:33,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 00:42:33,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 00:42:33,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 00:42:33,406 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 00:42:33,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,450 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 00:42:33,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 00:42:33,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 00:42:33,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 00:42:33,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 00:42:33,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 00:42:33,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 00:42:33,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 00:42:33,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33" (1/1) ... [2021-10-13 00:42:33,499 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 00:42:33,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:33,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 00:42:33,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 00:42:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 00:42:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 00:42:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 00:42:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 00:42:33,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 00:42:33,953 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-13 00:42:33,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:33 BoogieIcfgContainer [2021-10-13 00:42:33,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 00:42:33,970 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 00:42:33,970 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 00:42:33,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 00:42:33,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 12:42:33" (1/3) ... [2021-10-13 00:42:33,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c85a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:33, skipping insertion in model container [2021-10-13 00:42:33,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 12:42:33" (2/3) ... [2021-10-13 00:42:33,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13c85a19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 12:42:33, skipping insertion in model container [2021-10-13 00:42:33,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:33" (3/3) ... [2021-10-13 00:42:33,977 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2021-10-13 00:42:33,982 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 00:42:33,996 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 00:42:34,057 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 00:42:34,068 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 00:42:34,068 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 00:42:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 38 states have (on average 1.631578947368421) internal successors, (62), 44 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) [2021-10-13 00:42:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 00:42:34,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:34,103 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:34,104 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:34,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:34,110 INFO L82 PathProgramCache]: Analyzing trace with hash 823104699, now seen corresponding path program 1 times [2021-10-13 00:42:34,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:34,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657061625] [2021-10-13 00:42:34,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:34,126 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:34,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:34,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:34,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:34,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657061625] [2021-10-13 00:42:34,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657061625] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:42:34,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:42:34,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 00:42:34,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225995812] [2021-10-13 00:42:34,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 00:42:34,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:34,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 00:42:34,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:42:34,377 INFO L87 Difference]: Start difference. First operand has 45 states, 38 states have (on average 1.631578947368421) internal successors, (62), 44 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) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:34,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:34,405 INFO L93 Difference]: Finished difference Result 87 states and 120 transitions. [2021-10-13 00:42:34,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 00:42:34,407 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-13 00:42:34,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:34,415 INFO L225 Difference]: With dead ends: 87 [2021-10-13 00:42:34,415 INFO L226 Difference]: Without dead ends: 41 [2021-10-13 00:42:34,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 00:42:34,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-13 00:42:34,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-13 00:42:34,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 35 states have (on average 1.2) internal successors, (42), 40 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:34,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2021-10-13 00:42:34,457 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 17 [2021-10-13 00:42:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:34,458 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2021-10-13 00:42:34,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:34,459 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2021-10-13 00:42:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:42:34,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:34,461 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:34,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 00:42:34,462 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:34,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:34,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1122121916, now seen corresponding path program 1 times [2021-10-13 00:42:34,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:34,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197896520] [2021-10-13 00:42:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:34,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:34,507 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:34,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915369037] [2021-10-13 00:42:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:34,508 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:34,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:34,513 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:34,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 00:42:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:34,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:42:34,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:34,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:34,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:34,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197896520] [2021-10-13 00:42:34,846 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:34,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915369037] [2021-10-13 00:42:34,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915369037] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:42:34,847 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:42:34,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:42:34,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647776507] [2021-10-13 00:42:34,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:42:34,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:42:34,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:42:34,864 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:34,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:34,987 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2021-10-13 00:42:34,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:42:34,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 00:42:34,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:34,991 INFO L225 Difference]: With dead ends: 69 [2021-10-13 00:42:34,991 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 00:42:34,994 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 59.2ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:42:34,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 00:42:35,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2021-10-13 00:42:35,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 42 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2021-10-13 00:42:35,013 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 18 [2021-10-13 00:42:35,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:35,014 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2021-10-13 00:42:35,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:35,015 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2021-10-13 00:42:35,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-13 00:42:35,016 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:35,016 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:35,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:35,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:35,245 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:35,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:35,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1122125890, now seen corresponding path program 1 times [2021-10-13 00:42:35,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:35,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66123637] [2021-10-13 00:42:35,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:35,246 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:35,282 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:35,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560044335] [2021-10-13 00:42:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:35,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:35,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:35,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:35,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 00:42:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:35,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:42:35,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:35,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:35,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:35,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66123637] [2021-10-13 00:42:35,595 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:35,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560044335] [2021-10-13 00:42:35,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560044335] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:42:35,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:42:35,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-13 00:42:35,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713645560] [2021-10-13 00:42:35,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:42:35,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:35,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:42:35,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:42:35,644 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:35,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:35,849 INFO L93 Difference]: Finished difference Result 79 states and 82 transitions. [2021-10-13 00:42:35,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-13 00:42:35,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-13 00:42:35,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:35,853 INFO L225 Difference]: With dead ends: 79 [2021-10-13 00:42:35,853 INFO L226 Difference]: Without dead ends: 77 [2021-10-13 00:42:35,854 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 120.8ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:42:35,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-10-13 00:42:35,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 45. [2021-10-13 00:42:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.1794871794871795) internal successors, (46), 44 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2021-10-13 00:42:35,870 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 18 [2021-10-13 00:42:35,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:35,870 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2021-10-13 00:42:35,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:35,871 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2021-10-13 00:42:35,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-13 00:42:35,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:35,872 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:35,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:36,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:36,097 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:36,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:36,097 INFO L82 PathProgramCache]: Analyzing trace with hash 326346277, now seen corresponding path program 1 times [2021-10-13 00:42:36,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:36,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606982354] [2021-10-13 00:42:36,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:36,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:36,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:36,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114603227] [2021-10-13 00:42:36,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:36,115 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:36,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:36,121 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:36,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-13 00:42:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:36,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-13 00:42:36,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:36,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:36,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606982354] [2021-10-13 00:42:36,911 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:36,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114603227] [2021-10-13 00:42:36,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114603227] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:42:36,912 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:42:36,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-13 00:42:36,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209254734] [2021-10-13 00:42:36,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:42:36,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:36,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:42:36,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:42:36,916 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2021-10-13 00:42:37,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:37,270 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2021-10-13 00:42:37,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:42:37,270 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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 [2021-10-13 00:42:37,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:37,271 INFO L225 Difference]: With dead ends: 63 [2021-10-13 00:42:37,272 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 00:42:37,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 375.6ms TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-10-13 00:42:37,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 00:42:37,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-13 00:42:37,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 53 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:37,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2021-10-13 00:42:37,285 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 20 [2021-10-13 00:42:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:37,285 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2021-10-13 00:42:37,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2021-10-13 00:42:37,286 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2021-10-13 00:42:37,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-13 00:42:37,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:37,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:37,329 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:37,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:37,513 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:37,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:37,513 INFO L82 PathProgramCache]: Analyzing trace with hash 86317224, now seen corresponding path program 1 times [2021-10-13 00:42:37,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:37,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57695001] [2021-10-13 00:42:37,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:37,514 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:37,527 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:37,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [149740255] [2021-10-13 00:42:37,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:37,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:37,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:37,529 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:37,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-13 00:42:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:37,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-13 00:42:37,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:38,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:38,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:38,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57695001] [2021-10-13 00:42:38,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:38,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149740255] [2021-10-13 00:42:38,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149740255] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:42:38,355 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:42:38,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-13 00:42:38,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288719023] [2021-10-13 00:42:38,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:42:38,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:38,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:42:38,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:42:38,357 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2021-10-13 00:42:38,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:38,683 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-10-13 00:42:38,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:42:38,684 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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 [2021-10-13 00:42:38,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:38,688 INFO L225 Difference]: With dead ends: 61 [2021-10-13 00:42:38,692 INFO L226 Difference]: Without dead ends: 59 [2021-10-13 00:42:38,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 327.1ms TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:42:38,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-13 00:42:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2021-10-13 00:42:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.2083333333333333) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-10-13 00:42:38,704 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 22 [2021-10-13 00:42:38,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:38,705 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-10-13 00:42:38,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 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) [2021-10-13 00:42:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-10-13 00:42:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-13 00:42:38,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:38,706 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:38,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:38,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:38,933 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:38,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:38,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1346631627, now seen corresponding path program 1 times [2021-10-13 00:42:38,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:38,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080562996] [2021-10-13 00:42:38,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:38,933 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:38,947 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:38,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1484052122] [2021-10-13 00:42:38,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:38,948 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:38,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:38,949 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:38,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 00:42:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:39,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-13 00:42:39,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:39,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:39,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080562996] [2021-10-13 00:42:39,468 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:39,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484052122] [2021-10-13 00:42:39,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484052122] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:42:39,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:42:39,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:42:39,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018764803] [2021-10-13 00:42:39,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:42:39,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:39,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:42:39,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:42:39,471 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2021-10-13 00:42:39,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:39,541 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2021-10-13 00:42:39,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:42:39,541 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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 [2021-10-13 00:42:39,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:39,542 INFO L225 Difference]: With dead ends: 63 [2021-10-13 00:42:39,542 INFO L226 Difference]: Without dead ends: 61 [2021-10-13 00:42:39,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 36.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:42:39,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-13 00:42:39,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2021-10-13 00:42:39,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1875) internal successors, (57), 53 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) [2021-10-13 00:42:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2021-10-13 00:42:39,550 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 24 [2021-10-13 00:42:39,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:39,550 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2021-10-13 00:42:39,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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) [2021-10-13 00:42:39,551 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2021-10-13 00:42:39,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-13 00:42:39,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:39,552 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:39,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:39,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-13 00:42:39,766 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:39,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:39,767 INFO L82 PathProgramCache]: Analyzing trace with hash -1781730828, now seen corresponding path program 1 times [2021-10-13 00:42:39,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:39,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746371537] [2021-10-13 00:42:39,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:39,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:39,781 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:39,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645896106] [2021-10-13 00:42:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:39,781 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:39,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:39,782 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:39,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-13 00:42:39,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:39,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-13 00:42:39,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:40,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:40,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746371537] [2021-10-13 00:42:40,210 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:40,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645896106] [2021-10-13 00:42:40,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645896106] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:42:40,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:42:40,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:42:40,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837020276] [2021-10-13 00:42:40,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:42:40,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:40,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:42:40,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:42:40,215 INFO L87 Difference]: Start difference. First operand 54 states and 57 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:40,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:40,402 INFO L93 Difference]: Finished difference Result 77 states and 81 transitions. [2021-10-13 00:42:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:42:40,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-13 00:42:40,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:40,407 INFO L225 Difference]: With dead ends: 77 [2021-10-13 00:42:40,407 INFO L226 Difference]: Without dead ends: 75 [2021-10-13 00:42:40,408 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 98.4ms TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:42:40,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-13 00:42:40,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2021-10-13 00:42:40,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 62 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:40,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-10-13 00:42:40,420 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 27 [2021-10-13 00:42:40,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:40,424 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-10-13 00:42:40,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:40,425 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-10-13 00:42:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 00:42:40,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:40,428 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:40,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:40,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:40,643 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:40,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:40,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1655367537, now seen corresponding path program 1 times [2021-10-13 00:42:40,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:40,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682897971] [2021-10-13 00:42:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:40,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:40,660 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:40,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209026123] [2021-10-13 00:42:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:40,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:40,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:40,662 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:40,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-13 00:42:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:40,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 00:42:40,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:40,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:40,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682897971] [2021-10-13 00:42:40,972 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:40,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209026123] [2021-10-13 00:42:40,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209026123] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:42:40,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:42:40,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:42:40,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981851627] [2021-10-13 00:42:40,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:42:40,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:40,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:42:40,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:42:40,975 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:41,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:41,121 INFO L93 Difference]: Finished difference Result 154 states and 162 transitions. [2021-10-13 00:42:41,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 00:42:41,121 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 00:42:41,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:41,124 INFO L225 Difference]: With dead ends: 154 [2021-10-13 00:42:41,124 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 00:42:41,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.0ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:42:41,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 00:42:41,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 96. [2021-10-13 00:42:41,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.288888888888889) internal successors, (116), 95 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2021-10-13 00:42:41,151 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 30 [2021-10-13 00:42:41,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:41,151 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2021-10-13 00:42:41,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2021-10-13 00:42:41,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-13 00:42:41,160 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:41,161 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:41,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:41,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:41,375 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:41,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1655371511, now seen corresponding path program 1 times [2021-10-13 00:42:41,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:41,376 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021519905] [2021-10-13 00:42:41,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:41,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:41,392 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:41,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425863569] [2021-10-13 00:42:41,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:41,395 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:41,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:41,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:41,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-13 00:42:41,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:41,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-13 00:42:41,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:41,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:41,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:41,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021519905] [2021-10-13 00:42:41,734 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:41,734 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425863569] [2021-10-13 00:42:41,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425863569] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:42:41,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:42:41,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:42:41,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580922299] [2021-10-13 00:42:41,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:42:41,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:41,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:42:41,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:42:41,736 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:41,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:41,957 INFO L93 Difference]: Finished difference Result 147 states and 155 transitions. [2021-10-13 00:42:41,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:42:41,960 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-13 00:42:41,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:41,961 INFO L225 Difference]: With dead ends: 147 [2021-10-13 00:42:41,962 INFO L226 Difference]: Without dead ends: 145 [2021-10-13 00:42:41,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 112.4ms TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:42:41,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-10-13 00:42:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2021-10-13 00:42:41,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 90 states have (on average 1.2777777777777777) internal successors, (115), 95 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 115 transitions. [2021-10-13 00:42:41,979 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 115 transitions. Word has length 30 [2021-10-13 00:42:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:41,980 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 115 transitions. [2021-10-13 00:42:41,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 115 transitions. [2021-10-13 00:42:41,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-13 00:42:41,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:41,984 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:42,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:42,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-13 00:42:42,201 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:42,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:42,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1674279834, now seen corresponding path program 1 times [2021-10-13 00:42:42,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:42,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949134916] [2021-10-13 00:42:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:42,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:42,214 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:42,215 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [890319005] [2021-10-13 00:42:42,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:42,215 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:42,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:42,222 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:42,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-13 00:42:42,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:42,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-13 00:42:42,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:42,683 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:42,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:42,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949134916] [2021-10-13 00:42:42,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:42,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890319005] [2021-10-13 00:42:42,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890319005] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:42:42,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:42:42,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:42:42,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800665495] [2021-10-13 00:42:42,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:42:42,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:42,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:42:42,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:42:42,688 INFO L87 Difference]: Start difference. First operand 96 states and 115 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:42,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:42,844 INFO L93 Difference]: Finished difference Result 150 states and 178 transitions. [2021-10-13 00:42:42,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:42:42,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-13 00:42:42,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:42,848 INFO L225 Difference]: With dead ends: 150 [2021-10-13 00:42:42,848 INFO L226 Difference]: Without dead ends: 144 [2021-10-13 00:42:42,849 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 85.8ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:42:42,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-13 00:42:42,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 131. [2021-10-13 00:42:42,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 125 states have (on average 1.296) internal successors, (162), 130 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 162 transitions. [2021-10-13 00:42:42,867 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 162 transitions. Word has length 32 [2021-10-13 00:42:42,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:42,867 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 162 transitions. [2021-10-13 00:42:42,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2021-10-13 00:42:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-13 00:42:42,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:42,869 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:42,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:43,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:43,096 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:43,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:43,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1629657891, now seen corresponding path program 1 times [2021-10-13 00:42:43,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:43,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315885486] [2021-10-13 00:42:43,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:43,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:43,112 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:43,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417711516] [2021-10-13 00:42:43,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:43,113 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:43,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:43,123 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:43,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-13 00:42:43,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:43,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 00:42:43,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:44,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:44,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315885486] [2021-10-13 00:42:44,371 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:44,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417711516] [2021-10-13 00:42:44,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417711516] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:42:44,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:42:44,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:42:44,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326316626] [2021-10-13 00:42:44,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:42:44,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:44,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:42:44,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:42:44,374 INFO L87 Difference]: Start difference. First operand 131 states and 162 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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) [2021-10-13 00:42:44,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:44,722 INFO L93 Difference]: Finished difference Result 141 states and 168 transitions. [2021-10-13 00:42:44,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-13 00:42:44,722 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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 [2021-10-13 00:42:44,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:44,723 INFO L225 Difference]: With dead ends: 141 [2021-10-13 00:42:44,724 INFO L226 Difference]: Without dead ends: 139 [2021-10-13 00:42:44,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 299.8ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:42:44,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-13 00:42:44,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 131. [2021-10-13 00:42:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 125 states have (on average 1.28) internal successors, (160), 130 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 160 transitions. [2021-10-13 00:42:44,739 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 160 transitions. Word has length 34 [2021-10-13 00:42:44,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:44,739 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 160 transitions. [2021-10-13 00:42:44,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 11 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) [2021-10-13 00:42:44,740 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 160 transitions. [2021-10-13 00:42:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:42:44,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:44,740 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:44,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:44,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:44,964 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:44,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:44,965 INFO L82 PathProgramCache]: Analyzing trace with hash 1561987776, now seen corresponding path program 1 times [2021-10-13 00:42:44,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:44,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849866] [2021-10-13 00:42:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:44,965 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:44,989 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:44,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184916] [2021-10-13 00:42:44,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:44,990 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:44,990 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:44,991 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:44,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-13 00:42:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:45,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-13 00:42:45,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:46,166 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:46,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:46,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849866] [2021-10-13 00:42:46,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:46,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184916] [2021-10-13 00:42:46,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184916] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:42:46,168 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:42:46,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-13 00:42:46,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732622223] [2021-10-13 00:42:46,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 00:42:46,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:46,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 00:42:46,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-13 00:42:46,170 INFO L87 Difference]: Start difference. First operand 131 states and 160 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:46,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:46,409 INFO L93 Difference]: Finished difference Result 146 states and 173 transitions. [2021-10-13 00:42:46,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-13 00:42:46,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 00:42:46,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:46,412 INFO L225 Difference]: With dead ends: 146 [2021-10-13 00:42:46,412 INFO L226 Difference]: Without dead ends: 144 [2021-10-13 00:42:46,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 143.9ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:42:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-10-13 00:42:46,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 131. [2021-10-13 00:42:46,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 125 states have (on average 1.264) internal successors, (158), 130 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) [2021-10-13 00:42:46,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 158 transitions. [2021-10-13 00:42:46,433 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 158 transitions. Word has length 36 [2021-10-13 00:42:46,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:46,434 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 158 transitions. [2021-10-13 00:42:46,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:46,434 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 158 transitions. [2021-10-13 00:42:46,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-13 00:42:46,435 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:46,435 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:46,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:46,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:46,653 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:46,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:46,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1088491650, now seen corresponding path program 2 times [2021-10-13 00:42:46,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:46,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357716124] [2021-10-13 00:42:46,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:46,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:46,669 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:46,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346922373] [2021-10-13 00:42:46,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:42:46,670 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:46,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:46,671 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:46,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-13 00:42:47,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:42:47,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:42:47,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-13 00:42:47,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:47,915 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:47,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:47,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357716124] [2021-10-13 00:42:47,916 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:47,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346922373] [2021-10-13 00:42:47,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346922373] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:42:47,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:42:47,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-13 00:42:47,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504574989] [2021-10-13 00:42:47,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:42:47,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:42:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:42:47,919 INFO L87 Difference]: Start difference. First operand 131 states and 158 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:48,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:48,390 INFO L93 Difference]: Finished difference Result 190 states and 226 transitions. [2021-10-13 00:42:48,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 00:42:48,391 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-10-13 00:42:48,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:48,392 INFO L225 Difference]: With dead ends: 190 [2021-10-13 00:42:48,392 INFO L226 Difference]: Without dead ends: 139 [2021-10-13 00:42:48,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 417.9ms TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:42:48,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-10-13 00:42:48,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2021-10-13 00:42:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 132 states have (on average 1.2424242424242424) internal successors, (164), 137 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:48,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 164 transitions. [2021-10-13 00:42:48,428 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 164 transitions. Word has length 36 [2021-10-13 00:42:48,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:48,429 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 164 transitions. [2021-10-13 00:42:48,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:48,429 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 164 transitions. [2021-10-13 00:42:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 00:42:48,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:48,430 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:48,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:48,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-13 00:42:48,644 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:48,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:48,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1507131103, now seen corresponding path program 1 times [2021-10-13 00:42:48,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:48,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664713096] [2021-10-13 00:42:48,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:48,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:48,668 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:48,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [863444730] [2021-10-13 00:42:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:48,669 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:48,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:48,670 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:48,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-13 00:42:49,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:49,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-13 00:42:49,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:49,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:49,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664713096] [2021-10-13 00:42:49,661 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:49,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863444730] [2021-10-13 00:42:49,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863444730] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:42:49,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:42:49,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-10-13 00:42:49,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535019543] [2021-10-13 00:42:49,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 00:42:49,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:49,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 00:42:49,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-10-13 00:42:49,665 INFO L87 Difference]: Start difference. First operand 138 states and 164 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:50,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:50,178 INFO L93 Difference]: Finished difference Result 154 states and 180 transitions. [2021-10-13 00:42:50,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:42:50,179 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 00:42:50,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:50,180 INFO L225 Difference]: With dead ends: 154 [2021-10-13 00:42:50,180 INFO L226 Difference]: Without dead ends: 152 [2021-10-13 00:42:50,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 366.2ms TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-10-13 00:42:50,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-13 00:42:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 140. [2021-10-13 00:42:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 134 states have (on average 1.2388059701492538) internal successors, (166), 139 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:50,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2021-10-13 00:42:50,234 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 39 [2021-10-13 00:42:50,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:50,235 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2021-10-13 00:42:50,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 13 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:50,236 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2021-10-13 00:42:50,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 00:42:50,236 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:50,237 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:50,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:50,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-13 00:42:50,465 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:50,465 INFO L82 PathProgramCache]: Analyzing trace with hash -50686429, now seen corresponding path program 1 times [2021-10-13 00:42:50,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:50,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188704586] [2021-10-13 00:42:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:50,465 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:50,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:50,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904112231] [2021-10-13 00:42:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:50,479 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:50,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:50,480 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:50,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-13 00:42:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:50,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-13 00:42:50,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:51,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:51,991 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188704586] [2021-10-13 00:42:51,991 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:51,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904112231] [2021-10-13 00:42:51,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904112231] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:42:51,992 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:42:51,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-13 00:42:51,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411246528] [2021-10-13 00:42:51,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 00:42:51,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:51,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 00:42:51,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-13 00:42:51,994 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:52,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:52,553 INFO L93 Difference]: Finished difference Result 163 states and 190 transitions. [2021-10-13 00:42:52,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-13 00:42:52,554 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 00:42:52,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:52,555 INFO L225 Difference]: With dead ends: 163 [2021-10-13 00:42:52,555 INFO L226 Difference]: Without dead ends: 157 [2021-10-13 00:42:52,556 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 341.7ms TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-10-13 00:42:52,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-13 00:42:52,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 152. [2021-10-13 00:42:52,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 146 states have (on average 1.2397260273972603) internal successors, (181), 151 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:52,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2021-10-13 00:42:52,575 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 39 [2021-10-13 00:42:52,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:52,575 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2021-10-13 00:42:52,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:52,576 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2021-10-13 00:42:52,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-13 00:42:52,576 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:52,576 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:52,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:52,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-13 00:42:52,795 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:52,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:52,795 INFO L82 PathProgramCache]: Analyzing trace with hash -50682455, now seen corresponding path program 2 times [2021-10-13 00:42:52,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:52,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615865280] [2021-10-13 00:42:52,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:52,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:52,822 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:52,835 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642217957] [2021-10-13 00:42:52,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:42:52,836 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:52,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:52,843 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:52,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-13 00:42:53,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 00:42:53,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:42:53,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 00:42:53,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-13 00:42:53,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:53,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615865280] [2021-10-13 00:42:53,444 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:53,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642217957] [2021-10-13 00:42:53,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642217957] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:42:53,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:42:53,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 00:42:53,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197544602] [2021-10-13 00:42:53,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 00:42:53,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:53,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 00:42:53,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 00:42:53,446 INFO L87 Difference]: Start difference. First operand 152 states and 181 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:53,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:53,516 INFO L93 Difference]: Finished difference Result 188 states and 225 transitions. [2021-10-13 00:42:53,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 00:42:53,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-10-13 00:42:53,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:53,518 INFO L225 Difference]: With dead ends: 188 [2021-10-13 00:42:53,518 INFO L226 Difference]: Without dead ends: 186 [2021-10-13 00:42:53,518 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:42:53,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-10-13 00:42:53,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 158. [2021-10-13 00:42:53,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 152 states have (on average 1.2236842105263157) internal successors, (186), 157 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 186 transitions. [2021-10-13 00:42:53,540 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 186 transitions. Word has length 39 [2021-10-13 00:42:53,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:53,540 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 186 transitions. [2021-10-13 00:42:53,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 186 transitions. [2021-10-13 00:42:53,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-13 00:42:53,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:53,541 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:53,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:53,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-13 00:42:53,755 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:53,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:53,756 INFO L82 PathProgramCache]: Analyzing trace with hash -269629041, now seen corresponding path program 2 times [2021-10-13 00:42:53,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:53,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269463516] [2021-10-13 00:42:53,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:53,756 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:53,768 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:53,768 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017846478] [2021-10-13 00:42:53,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:42:53,769 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:53,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:53,800 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:53,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-13 00:42:54,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:42:54,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:42:54,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 00:42:54,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:54,490 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:54,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:54,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269463516] [2021-10-13 00:42:54,490 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:54,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017846478] [2021-10-13 00:42:54,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017846478] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:42:54,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:42:54,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-13 00:42:54,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355706673] [2021-10-13 00:42:54,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 00:42:54,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:54,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 00:42:54,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-13 00:42:54,498 INFO L87 Difference]: Start difference. First operand 158 states and 186 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:54,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:54,595 INFO L93 Difference]: Finished difference Result 227 states and 267 transitions. [2021-10-13 00:42:54,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 00:42:54,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-13 00:42:54,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:54,597 INFO L225 Difference]: With dead ends: 227 [2021-10-13 00:42:54,598 INFO L226 Difference]: Without dead ends: 164 [2021-10-13 00:42:54,599 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 20.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:42:54,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-10-13 00:42:54,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 146. [2021-10-13 00:42:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 140 states have (on average 1.1785714285714286) internal successors, (165), 145 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) [2021-10-13 00:42:54,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 165 transitions. [2021-10-13 00:42:54,622 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 165 transitions. Word has length 44 [2021-10-13 00:42:54,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:54,622 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 165 transitions. [2021-10-13 00:42:54,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:54,623 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 165 transitions. [2021-10-13 00:42:54,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-13 00:42:54,623 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:54,623 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:54,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:54,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-13 00:42:54,845 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:54,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:54,845 INFO L82 PathProgramCache]: Analyzing trace with hash 75787250, now seen corresponding path program 1 times [2021-10-13 00:42:54,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:54,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328376297] [2021-10-13 00:42:54,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:54,846 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:54,861 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:54,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119917514] [2021-10-13 00:42:54,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:54,862 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:54,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:54,863 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:54,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-13 00:42:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:42:55,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:42:55,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:55,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:55,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328376297] [2021-10-13 00:42:55,749 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:55,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119917514] [2021-10-13 00:42:55,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119917514] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:42:55,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:42:55,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:42:55,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140458104] [2021-10-13 00:42:55,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:42:55,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:55,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:42:55,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:42:55,752 INFO L87 Difference]: Start difference. First operand 146 states and 165 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 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) [2021-10-13 00:42:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:55,982 INFO L93 Difference]: Finished difference Result 183 states and 206 transitions. [2021-10-13 00:42:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:42:55,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 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 [2021-10-13 00:42:55,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:55,984 INFO L225 Difference]: With dead ends: 183 [2021-10-13 00:42:55,984 INFO L226 Difference]: Without dead ends: 125 [2021-10-13 00:42:55,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 152.5ms TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:42:55,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-10-13 00:42:56,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2021-10-13 00:42:56,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 119 states have (on average 1.1680672268907564) internal successors, (139), 124 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:56,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 139 transitions. [2021-10-13 00:42:56,001 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 139 transitions. Word has length 45 [2021-10-13 00:42:56,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:56,001 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 139 transitions. [2021-10-13 00:42:56,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 9 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) [2021-10-13 00:42:56,002 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 139 transitions. [2021-10-13 00:42:56,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-13 00:42:56,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:56,003 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:56,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:56,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-13 00:42:56,218 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:56,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:56,218 INFO L82 PathProgramCache]: Analyzing trace with hash 915495927, now seen corresponding path program 3 times [2021-10-13 00:42:56,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:56,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887157632] [2021-10-13 00:42:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:56,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:56,237 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:56,237 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [879690760] [2021-10-13 00:42:56,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:42:56,238 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:56,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:56,239 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:56,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-13 00:42:56,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-13 00:42:56,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:42:56,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-13 00:42:56,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:42:57,498 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:42:57,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:42:57,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887157632] [2021-10-13 00:42:57,499 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:42:57,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879690760] [2021-10-13 00:42:57,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879690760] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:42:57,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:42:57,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-10-13 00:42:57,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487485046] [2021-10-13 00:42:57,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 00:42:57,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:42:57,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 00:42:57,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-10-13 00:42:57,502 INFO L87 Difference]: Start difference. First operand 125 states and 139 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:42:58,376 INFO L93 Difference]: Finished difference Result 205 states and 227 transitions. [2021-10-13 00:42:58,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 00:42:58,377 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-13 00:42:58,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:42:58,378 INFO L225 Difference]: With dead ends: 205 [2021-10-13 00:42:58,378 INFO L226 Difference]: Without dead ends: 203 [2021-10-13 00:42:58,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 673.1ms TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2021-10-13 00:42:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-10-13 00:42:58,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 156. [2021-10-13 00:42:58,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 150 states have (on average 1.1866666666666668) internal successors, (178), 155 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:58,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 178 transitions. [2021-10-13 00:42:58,403 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 178 transitions. Word has length 48 [2021-10-13 00:42:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:42:58,403 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 178 transitions. [2021-10-13 00:42:58,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:42:58,404 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 178 transitions. [2021-10-13 00:42:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-13 00:42:58,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:42:58,404 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:42:58,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-13 00:42:58,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:58,618 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:42:58,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:42:58,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1367297969, now seen corresponding path program 2 times [2021-10-13 00:42:58,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:42:58,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891010584] [2021-10-13 00:42:58,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:42:58,619 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:42:58,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:42:58,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536758768] [2021-10-13 00:42:58,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:42:58,641 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:42:58,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:42:58,643 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:42:58,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-13 00:42:59,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:42:59,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:42:59,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-13 00:42:59,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:43:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:43:00,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:00,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891010584] [2021-10-13 00:43:00,808 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:43:00,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536758768] [2021-10-13 00:43:00,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536758768] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:43:00,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:43:00,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-13 00:43:00,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822177475] [2021-10-13 00:43:00,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-13 00:43:00,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:00,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-13 00:43:00,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-13 00:43:00,811 INFO L87 Difference]: Start difference. First operand 156 states and 178 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:01,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:01,449 INFO L93 Difference]: Finished difference Result 165 states and 183 transitions. [2021-10-13 00:43:01,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-13 00:43:01,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-13 00:43:01,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:01,451 INFO L225 Difference]: With dead ends: 165 [2021-10-13 00:43:01,451 INFO L226 Difference]: Without dead ends: 161 [2021-10-13 00:43:01,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 290.4ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-13 00:43:01,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2021-10-13 00:43:01,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 154. [2021-10-13 00:43:01,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 148 states have (on average 1.1824324324324325) internal successors, (175), 153 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:01,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2021-10-13 00:43:01,472 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 48 [2021-10-13 00:43:01,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:01,473 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2021-10-13 00:43:01,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2021-10-13 00:43:01,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-13 00:43:01,474 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:01,474 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:01,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-13 00:43:01,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:43:01,684 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:43:01,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:01,685 INFO L82 PathProgramCache]: Analyzing trace with hash 194484878, now seen corresponding path program 3 times [2021-10-13 00:43:01,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:01,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962782585] [2021-10-13 00:43:01,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:01,685 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:01,695 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:43:01,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240052474] [2021-10-13 00:43:01,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 00:43:01,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:43:01,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:43:01,715 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:43:01,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-13 00:43:02,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-13 00:43:02,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:43:02,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 63 conjunts are in the unsatisfiable core [2021-10-13 00:43:02,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:43:05,340 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-13 00:43:05,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:05,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962782585] [2021-10-13 00:43:05,341 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:43:05,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240052474] [2021-10-13 00:43:05,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240052474] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:43:05,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:43:05,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-10-13 00:43:05,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956171715] [2021-10-13 00:43:05,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-13 00:43:05,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:05,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-13 00:43:05,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2021-10-13 00:43:05,342 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:08,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:08,048 INFO L93 Difference]: Finished difference Result 156 states and 176 transitions. [2021-10-13 00:43:08,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-13 00:43:08,048 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-13 00:43:08,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:08,049 INFO L225 Difference]: With dead ends: 156 [2021-10-13 00:43:08,050 INFO L226 Difference]: Without dead ends: 146 [2021-10-13 00:43:08,050 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 3076.8ms TimeCoverageRelationStatistics Valid=331, Invalid=859, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 00:43:08,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-13 00:43:08,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 78. [2021-10-13 00:43:08,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 77 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2021-10-13 00:43:08,067 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 51 [2021-10-13 00:43:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:08,068 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2021-10-13 00:43:08,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8636363636363635) internal successors, (41), 22 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2021-10-13 00:43:08,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:43:08,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:08,069 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:08,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-13 00:43:08,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-10-13 00:43:08,281 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:43:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:08,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2078434191, now seen corresponding path program 1 times [2021-10-13 00:43:08,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:08,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675233813] [2021-10-13 00:43:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:08,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:08,292 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:43:08,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83092617] [2021-10-13 00:43:08,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:08,293 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:43:08,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:43:08,296 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:43:08,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-13 00:43:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:09,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 00:43:09,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:43:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:43:09,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:09,155 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675233813] [2021-10-13 00:43:09,155 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:43:09,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83092617] [2021-10-13 00:43:09,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83092617] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:43:09,156 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:43:09,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-10-13 00:43:09,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345648798] [2021-10-13 00:43:09,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 00:43:09,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:09,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 00:43:09,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-13 00:43:09,158 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:09,378 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2021-10-13 00:43:09,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-13 00:43:09,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-13 00:43:09,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:09,382 INFO L225 Difference]: With dead ends: 126 [2021-10-13 00:43:09,382 INFO L226 Difference]: Without dead ends: 120 [2021-10-13 00:43:09,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 97.0ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-10-13 00:43:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-10-13 00:43:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 90. [2021-10-13 00:43:09,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 1.0568181818181819) internal successors, (93), 89 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) [2021-10-13 00:43:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2021-10-13 00:43:09,404 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 53 [2021-10-13 00:43:09,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:09,405 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2021-10-13 00:43:09,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:09,405 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2021-10-13 00:43:09,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-13 00:43:09,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:09,406 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:09,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-13 00:43:09,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-10-13 00:43:09,632 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:43:09,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:09,633 INFO L82 PathProgramCache]: Analyzing trace with hash -2074616969, now seen corresponding path program 1 times [2021-10-13 00:43:09,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:09,633 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855528182] [2021-10-13 00:43:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:09,633 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:09,650 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:43:09,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1589943025] [2021-10-13 00:43:09,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:09,651 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:43:09,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:43:09,652 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:43:09,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-13 00:43:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 00:43:10,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 00:43:10,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:43:10,763 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 37 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 00:43:10,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:10,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855528182] [2021-10-13 00:43:10,764 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:43:10,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589943025] [2021-10-13 00:43:10,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589943025] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-13 00:43:10,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-13 00:43:10,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-13 00:43:10,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029997528] [2021-10-13 00:43:10,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 00:43:10,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:10,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 00:43:10,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 00:43:10,766 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:11,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:11,002 INFO L93 Difference]: Finished difference Result 128 states and 133 transitions. [2021-10-13 00:43:11,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-13 00:43:11,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-10-13 00:43:11,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:11,004 INFO L225 Difference]: With dead ends: 128 [2021-10-13 00:43:11,004 INFO L226 Difference]: Without dead ends: 87 [2021-10-13 00:43:11,004 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 149.7ms TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-13 00:43:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-13 00:43:11,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-10-13 00:43:11,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 86 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:11,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 89 transitions. [2021-10-13 00:43:11,028 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 89 transitions. Word has length 53 [2021-10-13 00:43:11,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:11,029 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 89 transitions. [2021-10-13 00:43:11,029 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:11,029 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 89 transitions. [2021-10-13 00:43:11,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-10-13 00:43:11,030 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 00:43:11,030 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 00:43:11,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-13 00:43:11,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-10-13 00:43:11,256 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 00:43:11,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 00:43:11,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1979371639, now seen corresponding path program 2 times [2021-10-13 00:43:11,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 00:43:11,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506385723] [2021-10-13 00:43:11,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 00:43:11,258 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 00:43:11,287 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 00:43:11,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1509431361] [2021-10-13 00:43:11,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 00:43:11,287 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 00:43:11,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 00:43:11,290 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 00:43:11,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-13 00:43:12,088 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-13 00:43:12,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 00:43:12,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 00:43:12,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 00:43:12,279 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-10-13 00:43:12,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 00:43:12,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506385723] [2021-10-13 00:43:12,280 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 00:43:12,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509431361] [2021-10-13 00:43:12,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509431361] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 00:43:12,281 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 00:43:12,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-13 00:43:12,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178337161] [2021-10-13 00:43:12,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 00:43:12,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 00:43:12,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 00:43:12,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-13 00:43:12,282 INFO L87 Difference]: Start difference. First operand 87 states and 89 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:12,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 00:43:12,609 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2021-10-13 00:43:12,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-13 00:43:12,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2021-10-13 00:43:12,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 00:43:12,609 INFO L225 Difference]: With dead ends: 87 [2021-10-13 00:43:12,609 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 00:43:12,610 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 73.9ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-13 00:43:12,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 00:43:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 00:43:12,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:12,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 00:43:12,611 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2021-10-13 00:43:12,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 00:43:12,611 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 00:43:12,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 00:43:12,612 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 00:43:12,612 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 00:43:12,614 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:43:12,615 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:43:12,615 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:43:12,616 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:43:12,616 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:43:12,616 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 00:43:12,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-10-13 00:43:12,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-13 00:43:12,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 00:43:12,829 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:43:12,831 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:43:13,060 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:43:13,295 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:43:13,454 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:43:13,455 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:43:13,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:43:13,631 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:43:13,784 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 00:43:24,490 WARN L207 SmtUtils]: Spent 6.42 s on a formula simplification. DAG size of input: 112 DAG size of output: 65 [2021-10-13 00:43:28,813 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:43:28,813 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:43:28,813 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0))) (.cse14 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse3 (<= 0 ULTIMATE.start_main_~c~0)) (.cse4 (<= ULTIMATE.start_main_~x~0 2)) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= .cse0 .cse14)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0)) (.cse7 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~r~0 0)) (.cse11 (= ULTIMATE.start_main_~s~0 1)) (.cse12 (= ULTIMATE.start_main_~a~0 .cse14)) (.cse13 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= .cse0 ULTIMATE.start_main_~a~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse1 .cse2 (<= 0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2) .cse3 .cse4 .cse5 .cse6 (<= 1 ULTIMATE.start_main_~y~0) .cse7 (< ULTIMATE.start_main_~b~0 2) (<= 1 ULTIMATE.start_main_~x~0)) (and .cse1 (= ULTIMATE.start_main_~k~0 0) .cse2 .cse4 .cse5 (<= 1 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse8 .cse7 .cse9 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse3 .cse4 .cse5 (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~x~0) .cse6 .cse8 .cse7 .cse9 .cse10 .cse11 (= ULTIMATE.start_main_~k~0 1) .cse12 .cse13)))) [2021-10-13 00:43:28,813 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:43:28,813 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0))) (.cse14 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse3 (<= 0 ULTIMATE.start_main_~c~0)) (.cse4 (<= ULTIMATE.start_main_~x~0 2)) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= .cse0 .cse14)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0)) (.cse7 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~r~0 0)) (.cse11 (= ULTIMATE.start_main_~s~0 1)) (.cse12 (= ULTIMATE.start_main_~a~0 .cse14)) (.cse13 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= .cse0 ULTIMATE.start_main_~a~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse1 .cse2 (<= 0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2) .cse3 .cse4 .cse5 .cse6 (<= 1 ULTIMATE.start_main_~y~0) .cse7 (< ULTIMATE.start_main_~b~0 2) (<= 1 ULTIMATE.start_main_~x~0)) (and .cse1 .cse2 .cse4 .cse5 (<= 1 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse6 .cse8 .cse7 .cse9 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse3 .cse4 .cse5 (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~x~0) .cse6 .cse8 .cse7 .cse9 .cse10 .cse11 (= ULTIMATE.start_main_~k~0 1) .cse12 .cse13)))) [2021-10-13 00:43:28,814 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:43:28,814 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0))) (.cse14 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse2 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse3 (<= 0 ULTIMATE.start_main_~c~0)) (.cse4 (<= ULTIMATE.start_main_~x~0 2)) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= .cse0 .cse14)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0)) (.cse7 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~r~0 0)) (.cse11 (= ULTIMATE.start_main_~s~0 1)) (.cse12 (= ULTIMATE.start_main_~a~0 .cse14)) (.cse13 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (= .cse0 ULTIMATE.start_main_~a~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse1 .cse2 (<= 0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2) .cse3 .cse4 .cse5 .cse6 (<= 1 ULTIMATE.start_main_~y~0) .cse7 (< ULTIMATE.start_main_~b~0 2) (<= 1 ULTIMATE.start_main_~x~0)) (and .cse1 .cse2 .cse4 .cse5 (<= 1 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse6 .cse8 .cse7 .cse9 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse10 .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse3 .cse4 .cse5 (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~x~0) .cse6 .cse8 .cse7 .cse9 .cse10 .cse11 (= ULTIMATE.start_main_~k~0 1) .cse12 .cse13)))) [2021-10-13 00:43:28,814 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:43:28,814 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 52 53) the Hoare annotation is: (let ((.cse13 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse2 (<= 0 ULTIMATE.start_main_~c~0)) (.cse3 (<= ULTIMATE.start_main_~x~0 2)) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse5 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse13)) (.cse8 (<= 1 ULTIMATE.start_main_~b~0)) (.cse6 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse9 (= ULTIMATE.start_main_~q~0 0)) (.cse10 (= ULTIMATE.start_main_~r~0 0)) (.cse11 (= ULTIMATE.start_main_~s~0 1)) (.cse7 (= ULTIMATE.start_main_~a~0 .cse13)) (.cse12 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse0 .cse1 (<= 0 ULTIMATE.start_main_~b~0) (<= ULTIMATE.start_main_~y~0 2) .cse2 .cse3 .cse4 .cse5 (<= 1 ULTIMATE.start_main_~y~0) .cse6 (< ULTIMATE.start_main_~b~0 2) (<= 1 ULTIMATE.start_main_~x~0) .cse7) (and .cse0 .cse1 .cse3 .cse4 (<= 1 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse5 .cse8 .cse6 .cse9 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0) .cse10 .cse11 .cse7 .cse12) (and .cse0 .cse1 .cse2 .cse3 .cse4 (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~x~0) .cse5 .cse8 .cse6 .cse9 .cse10 .cse11 (= ULTIMATE.start_main_~k~0 1) .cse7 .cse12)))) [2021-10-13 00:43:28,814 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:43:28,814 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:43:28,815 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 00:43:28,815 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~b~0)) (.cse1 (<= ULTIMATE.start_main_~y~0 2)) (.cse2 (<= ULTIMATE.start_main_~x~0 2)) (.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= 1 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~p~0 0) .cse2 .cse3 .cse4 .cse5) (and (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) 0) (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (< (* 2 ULTIMATE.start_main_~b~0) 2) (< ULTIMATE.start_main_~c~0 2) (<= 0 ULTIMATE.start_main_~c~0) .cse2 .cse3 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) .cse4 .cse5))) [2021-10-13 00:43:28,815 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 00:43:28,815 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-13 00:43:28,815 INFO L860 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2021-10-13 00:43:28,815 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:43:28,815 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:43:28,816 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:43:28,816 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:43:28,816 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:43:28,816 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-13 00:43:28,816 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:43:28,816 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse21 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0)))) (let ((.cse0 (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0)) (.cse3 (<= 0 ULTIMATE.start_main_~b~0)) (.cse4 (<= ULTIMATE.start_main_~y~0 2)) (.cse9 (<= 1 ULTIMATE.start_main_~y~0)) (.cse11 (< ULTIMATE.start_main_~b~0 2)) (.cse12 (<= 1 ULTIMATE.start_main_~x~0)) (.cse5 (<= 0 ULTIMATE.start_main_~c~0)) (.cse7 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (= (+ ULTIMATE.start_main_~c~0 (* ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~k~0)) .cse21)) (.cse1 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse14 (= ULTIMATE.start_main_~k~0 0)) (.cse2 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse6 (<= ULTIMATE.start_main_~x~0 2)) (.cse16 (<= 1 ULTIMATE.start_main_~b~0)) (.cse10 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse17 (= ULTIMATE.start_main_~q~0 0)) (.cse15 (= ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~a~0)) (.cse18 (= ULTIMATE.start_main_~r~0 0)) (.cse19 (= ULTIMATE.start_main_~s~0 1)) (.cse13 (= ULTIMATE.start_main_~a~0 .cse21)) (.cse20 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse0 .cse1 .cse14 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~c~0) .cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse4 .cse6 .cse9 .cse10 .cse15 (not (= ULTIMATE.start_main_~b~0 0)) .cse11 .cse12 .cse13) (and .cse1 .cse2 .cse5 .cse6 .cse7 (<= (+ ULTIMATE.start_main_~c~0 ULTIMATE.start_main_~b~0) ULTIMATE.start_main_~x~0) .cse8 .cse16 .cse10 .cse17 .cse18 .cse19 (= ULTIMATE.start_main_~k~0 1) .cse13 .cse20) (and .cse1 .cse14 .cse2 .cse6 (<= 1 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~b~0 2) (<= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse16 .cse10 .cse17 .cse15 .cse18 .cse19 .cse13 .cse20)))) [2021-10-13 00:43:28,816 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2021-10-13 00:43:28,816 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:43:28,816 INFO L860 garLoopResultBuilder]: At program point L73(lines 18 74) the Hoare annotation is: true [2021-10-13 00:43:28,816 INFO L857 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-10-13 00:43:28,816 INFO L857 garLoopResultBuilder]: For program point L7-1(lines 7 9) no Hoare annotation was computed. [2021-10-13 00:43:28,817 INFO L857 garLoopResultBuilder]: For program point L7-2(lines 7 9) no Hoare annotation was computed. [2021-10-13 00:43:28,817 INFO L857 garLoopResultBuilder]: For program point L7-3(lines 7 9) no Hoare annotation was computed. [2021-10-13 00:43:28,817 INFO L857 garLoopResultBuilder]: For program point L7-4(lines 7 9) no Hoare annotation was computed. [2021-10-13 00:43:28,817 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 00:43:28,817 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:43:28,817 INFO L857 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-10-13 00:43:28,817 INFO L853 garLoopResultBuilder]: At program point L41-1(lines 7 68) the Hoare annotation is: (let ((.cse4 (< (* 2 ULTIMATE.start_main_~c~0) 2)) (.cse8 (< ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~a~0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~xy~0)) (.cse9 (<= 0 ULTIMATE.start_main_~b~0)) (.cse2 (<= 0 ULTIMATE.start_main_~c~0)) (.cse3 (<= ULTIMATE.start_main_~x~0 2)) (.cse5 (= ULTIMATE.start_main_~yy~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (.cse6 (<= 1 ULTIMATE.start_main_~x~0)) (.cse7 (= ULTIMATE.start_main_~a~0 (+ (* ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~x~0))))) (or (and .cse0 (= ULTIMATE.start_main_~k~0 0) .cse1 (= ULTIMATE.start_main_~p~0 1) .cse2 .cse3 (<= ULTIMATE.start_main_~b~0 2) (<= 1 ULTIMATE.start_main_~b~0) .cse4 .cse5 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~r~0 0) (= ULTIMATE.start_main_~s~0 1) .cse6 .cse7 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse8 (= (+ ULTIMATE.start_main_~s~0 1) 0) .cse9 (<= ULTIMATE.start_main_~a~0 2) (< (* 2 ULTIMATE.start_main_~b~0) 2) (= ULTIMATE.start_main_~p~0 0) .cse2 .cse4 (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) .cse7 (<= 0 ULTIMATE.start_main_~x~0)) (and (= (+ (* ULTIMATE.start_main_~s~0 ULTIMATE.start_main_~y~0) (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~x~0)) ULTIMATE.start_main_~b~0) .cse8 .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse9 (<= ULTIMATE.start_main_~y~0 2) (< ULTIMATE.start_main_~c~0 2) .cse2 .cse3 (<= 1 ULTIMATE.start_main_~y~0) .cse5 (< ULTIMATE.start_main_~b~0 2) .cse6 .cse7))) [2021-10-13 00:43:28,817 INFO L857 garLoopResultBuilder]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2021-10-13 00:43:28,817 INFO L857 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-10-13 00:43:28,817 INFO L857 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2021-10-13 00:43:28,817 INFO L857 garLoopResultBuilder]: For program point L8-6(line 8) no Hoare annotation was computed. [2021-10-13 00:43:28,817 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 00:43:28,818 INFO L857 garLoopResultBuilder]: For program point L8-8(line 8) no Hoare annotation was computed. [2021-10-13 00:43:28,818 INFO L857 garLoopResultBuilder]: For program point L8-10(line 8) no Hoare annotation was computed. [2021-10-13 00:43:28,818 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2021-10-13 00:43:28,818 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-13 00:43:28,821 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 00:43:28,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 12:43:28 BoogieIcfgContainer [2021-10-13 00:43:28,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 00:43:28,865 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 00:43:28,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 00:43:28,865 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 00:43:28,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 12:42:33" (3/4) ... [2021-10-13 00:43:28,868 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 00:43:28,880 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-13 00:43:28,880 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 00:43:28,881 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:43:28,881 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 00:43:28,937 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 00:43:28,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 00:43:28,939 INFO L168 Benchmark]: Toolchain (without parser) took 55802.55 ms. Allocated memory was 96.5 MB in the beginning and 270.5 MB in the end (delta: 174.1 MB). Free memory was 61.6 MB in the beginning and 136.1 MB in the end (delta: -74.5 MB). Peak memory consumption was 99.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:43:28,939 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 96.5 MB. Free memory was 69.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:43:28,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.28 ms. Allocated memory was 96.5 MB in the beginning and 148.9 MB in the end (delta: 52.4 MB). Free memory was 61.2 MB in the beginning and 122.7 MB in the end (delta: -61.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 00:43:28,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.44 ms. Allocated memory is still 148.9 MB. Free memory was 122.7 MB in the beginning and 121.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 00:43:28,940 INFO L168 Benchmark]: Boogie Preprocessor took 27.83 ms. Allocated memory is still 148.9 MB. Free memory was 121.6 MB in the beginning and 119.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 00:43:28,940 INFO L168 Benchmark]: RCFGBuilder took 487.98 ms. Allocated memory is still 148.9 MB. Free memory was 119.6 MB in the beginning and 108.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 00:43:28,941 INFO L168 Benchmark]: TraceAbstraction took 54894.28 ms. Allocated memory was 148.9 MB in the beginning and 270.5 MB in the end (delta: 121.6 MB). Free memory was 107.1 MB in the beginning and 141.4 MB in the end (delta: -34.3 MB). Peak memory consumption was 180.8 MB. Max. memory is 16.1 GB. [2021-10-13 00:43:28,941 INFO L168 Benchmark]: Witness Printer took 73.17 ms. Allocated memory is still 270.5 MB. Free memory was 140.3 MB in the beginning and 136.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 00:43:28,943 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 96.5 MB. Free memory was 69.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.28 ms. Allocated memory was 96.5 MB in the beginning and 148.9 MB in the end (delta: 52.4 MB). Free memory was 61.2 MB in the beginning and 122.7 MB in the end (delta: -61.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.44 ms. Allocated memory is still 148.9 MB. Free memory was 122.7 MB in the beginning and 121.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.83 ms. Allocated memory is still 148.9 MB. Free memory was 121.6 MB in the beginning and 119.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 487.98 ms. Allocated memory is still 148.9 MB. Free memory was 119.6 MB in the beginning and 108.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 54894.28 ms. Allocated memory was 148.9 MB in the beginning and 270.5 MB in the end (delta: 121.6 MB). Free memory was 107.1 MB in the beginning and 141.4 MB in the end (delta: -34.3 MB). Peak memory consumption was 180.8 MB. Max. memory is 16.1 GB. * Witness Printer took 73.17 ms. Allocated memory is still 270.5 MB. Free memory was 140.3 MB in the beginning and 136.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 54772.9ms, OverallIterations: 24, TraceHistogramMax: 4, EmptinessCheckTime: 51.8ms, AutomataDifference: 9535.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 15987.9ms, InitialAbstractionConstructionTime: 14.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 825 SDtfs, 2445 SDslu, 3016 SDs, 0 SdLazy, 3597 SolverSat, 398 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3371.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 981 GetRequests, 663 SyntacticMatches, 0 SemanticMatches, 318 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 7390.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=16, InterpolantAutomatonStates: 264, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 470.8ms AutomataMinimizationTime, 24 MinimizatonAttempts, 430 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 49 NumberOfFragments, 1357 HoareAnnotationTreeSize, 9 FomulaSimplifications, 131797 FormulaSimplificationTreeSizeReduction, 980.6ms HoareSimplificationTime, 9 FomulaSimplificationsInter, 10412 FormulaSimplificationTreeSizeReductionInter, 14997.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 190.4ms SsaConstructionTime, 703.3ms SatisfiabilityAnalysisTime, 13802.7ms InterpolantComputationTime, 865 NumberOfCodeBlocks, 823 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 841 ConstructedInterpolants, 0 QuantifiedInterpolants, 8254 SizeOfPredicates, 251 NumberOfNonLiveVariables, 3549 ConjunctsInSsa, 548 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 200/376 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 - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((s * y + q * x == b && c + b * k == a) && b < a) && cond == 1) && x * y == xy) && 0 <= b) && y <= 2) && 0 <= c) && x <= 2) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) || (((((((((((((((cond == 1 && x * y == xy) && x <= 2) && 1 == cond) && 1 <= c) && b <= 2) && a <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && a == r * y + p * x) && b == y)) || ((((((((((((((cond == 1 && x * y == xy) && 0 <= c) && x <= 2) && 1 == cond) && c + b <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && k == 1) && a == r * y + p * x) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((s * y + q * x == b && c + b * k == a) && b < a) && cond == 1) && x * y == xy) && 0 <= b) && y <= 2) && 0 <= c) && x <= 2) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) || (((((((((((((((cond == 1 && x * y == xy) && x <= 2) && 1 == cond) && 1 <= c) && b <= 2) && a <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && a == r * y + p * x) && b == y)) || ((((((((((((((cond == 1 && x * y == xy) && 0 <= c) && x <= 2) && 1 == cond) && c + b <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && k == 1) && a == r * y + p * x) && b == y) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((s * y + q * x == b && b < a) && cond == 1) && x * y == xy) && 0 <= b) && y <= 2) && 0 <= c) && x <= 2) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) && a == r * y + p * x) || (((((((((((((((s * y + q * x == b && cond == 1) && k == 0) && b < c) && x * y == xy) && 1 <= cond) && 0 <= b) && y <= 2) && x <= 2) && 1 <= y) && yy == y * y) && c == a) && !(b == 0)) && b < 2) && 1 <= x) && a == r * y + p * x)) || ((((((((((((((cond == 1 && x * y == xy) && 0 <= c) && x <= 2) && 1 == cond) && c + b <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && k == 1) && a == r * y + p * x) && b == y)) || ((((((((((((((cond == 1 && k == 0) && x * y == xy) && x <= 2) && 1 <= c) && b <= 2) && a <= x) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && a == r * y + p * x) && b == y) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((((((((((((s * y + q * x == b && b < a) && cond == 1) && x * y == xy) && 0 <= b) && y <= 2) && 0 <= c) && x <= 2) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) && a == r * y + p * x) || (((((((((((((((cond == 1 && x * y == xy) && x <= 2) && 1 == cond) && 1 <= c) && b <= 2) && a <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && a == r * y + p * x) && b == y)) || ((((((((((((((cond == 1 && x * y == xy) && 0 <= c) && x <= 2) && 1 == cond) && c + b <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && k == 1) && a == r * y + p * x) && b == y) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: ((((((0 <= b && y <= 2) && p == 0) && x <= 2) && 1 <= y) && 1 <= x) && a == r * y + p * x) || ((((((((((((((b < a && cond == 1) && s * y + q * x == 0) && x * y == xy) && 1 <= cond) && 0 <= b) && y <= 2) && 2 * b < 2) && c < 2) && 0 <= c) && x <= 2) && 1 <= y) && yy == y * y) && 1 <= x) && a == r * y + p * x) - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: (((((((((((((((s * y + q * x == b && c + b * k == a) && b < a) && cond == 1) && x * y == xy) && 0 <= b) && y <= 2) && 0 <= c) && x <= 2) && 1 == cond) && c + b * k == r * y + p * x) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) || (((((((((((((((cond == 1 && k == 0) && x * y == xy) && x <= 2) && 1 == cond) && 1 <= c) && b <= 2) && a <= x) && 1 <= b) && yy == y * y) && q == 0) && c == a) && r == 0) && s == 1) && a == r * y + p * x) && b == y)) || ((((((((((((((cond == 1 && x * y == xy) && 0 <= c) && x <= 2) && 1 == cond) && c + b <= x) && c + b * k == r * y + p * x) && 1 <= b) && yy == y * y) && q == 0) && r == 0) && s == 1) && k == 1) && a == r * y + p * x) && b == y) - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: ((((((((((((((((cond == 1 && k == 0) && x * y == xy) && p == 1) && 0 <= c) && x <= 2) && b <= 2) && 1 <= b) && 2 * c < 2) && yy == y * y) && q == 0) && r == 0) && s == 1) && 1 <= x) && a == r * y + p * x) && b == y) || (((((((((((b < a && s + 1 == 0) && 0 <= b) && a <= 2) && 2 * b < 2) && p == 0) && 0 <= c) && 2 * c < 2) && q == 1) && x == b + y) && a == r * y + p * x) && 0 <= x)) || ((((((((((((((s * y + q * x == b && b < a) && cond == 1) && x * y == xy) && 1 <= cond) && 0 <= b) && y <= 2) && c < 2) && 0 <= c) && x <= 2) && 1 <= y) && yy == y * y) && b < 2) && 1 <= x) && a == r * y + p * x) RESULT: Ultimate proved your program to be correct! [2021-10-13 00:43:28,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e55803ee-5736-433b-97e1-18baefa4b038/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...