./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa --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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:56:22,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:56:22,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:56:22,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:56:22,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:56:22,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:56:22,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:56:22,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:56:22,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:56:22,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:56:22,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:56:22,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:56:22,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:56:22,851 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:56:22,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:56:22,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:56:22,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:56:22,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:56:22,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:56:22,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:56:22,860 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:56:22,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:56:22,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:56:22,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:56:22,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:56:22,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:56:22,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:56:22,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:56:22,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:56:22,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:56:22,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:56:22,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:56:22,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:56:22,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:56:22,871 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:56:22,871 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:56:22,872 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:56:22,872 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:56:22,872 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:56:22,873 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:56:22,873 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:56:22,874 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:56:22,890 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:56:22,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:56:22,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:56:22,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:56:22,891 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:56:22,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:56:22,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:56:22,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:56:22,892 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:56:22,892 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:56:22,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:56:22,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:56:22,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:56:22,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:56:22,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:56:22,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:56:22,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:56:22,893 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:56:22,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:56:22,893 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:56:22,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:56:22,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:56:22,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:56:22,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:56:22,894 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:56:22,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:56:22,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:56:22,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:56:22,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:56:22,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:56:22,895 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:56:22,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:56:22,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:56:22,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:56:22,895 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_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2021-12-06 23:56:23,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:56:23,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:56:23,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:56:23,111 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:56:23,112 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:56:23,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2021-12-06 23:56:23,165 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/data/d3f47e283/dc33df499b054fd8867ff7ea50656a93/FLAGa663fbb5e [2021-12-06 23:56:23,642 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:56:23,643 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2021-12-06 23:56:23,657 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/data/d3f47e283/dc33df499b054fd8867ff7ea50656a93/FLAGa663fbb5e [2021-12-06 23:56:23,670 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/data/d3f47e283/dc33df499b054fd8867ff7ea50656a93 [2021-12-06 23:56:23,673 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:56:23,674 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:56:23,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:56:23,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:56:23,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:56:23,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:56:23" (1/1) ... [2021-12-06 23:56:23,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59e14325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:23, skipping insertion in model container [2021-12-06 23:56:23,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:56:23" (1/1) ... [2021-12-06 23:56:23,685 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:56:23,713 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:56:24,005 WARN L230 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_cc92b491-8135-4830-a834-849861f51f59/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2021-12-06 23:56:24,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:56:24,019 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:56:24,049 WARN L230 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_cc92b491-8135-4830-a834-849861f51f59/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2021-12-06 23:56:24,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:56:24,091 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:56:24,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24 WrapperNode [2021-12-06 23:56:24,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:56:24,093 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:56:24,093 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:56:24,093 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:56:24,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24" (1/1) ... [2021-12-06 23:56:24,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24" (1/1) ... [2021-12-06 23:56:24,128 INFO L137 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81 [2021-12-06 23:56:24,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:56:24,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:56:24,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:56:24,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:56:24,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24" (1/1) ... [2021-12-06 23:56:24,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24" (1/1) ... [2021-12-06 23:56:24,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24" (1/1) ... [2021-12-06 23:56:24,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24" (1/1) ... [2021-12-06 23:56:24,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24" (1/1) ... [2021-12-06 23:56:24,146 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24" (1/1) ... [2021-12-06 23:56:24,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24" (1/1) ... [2021-12-06 23:56:24,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:56:24,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:56:24,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:56:24,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:56:24,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24" (1/1) ... [2021-12-06 23:56:24,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:56:24,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:56:24,176 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:56:24,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:56:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 23:56:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:56:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 23:56:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:56:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-06 23:56:24,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-06 23:56:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-06 23:56:24,206 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-06 23:56:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:56:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-12-06 23:56:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:56:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:56:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:56:24,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:56:24,207 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-06 23:56:24,288 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:56:24,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:56:24,458 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:56:24,466 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:56:24,466 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 23:56:24,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:56:24 BoogieIcfgContainer [2021-12-06 23:56:24,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:56:24,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:56:24,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:56:24,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:56:24,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:56:23" (1/3) ... [2021-12-06 23:56:24,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79547910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:56:24, skipping insertion in model container [2021-12-06 23:56:24,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:56:24" (2/3) ... [2021-12-06 23:56:24,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79547910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:56:24, skipping insertion in model container [2021-12-06 23:56:24,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:56:24" (3/3) ... [2021-12-06 23:56:24,474 INFO L111 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2021-12-06 23:56:24,478 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-06 23:56:24,478 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:56:24,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:56:24,478 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-06 23:56:24,502 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,502 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,502 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,503 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,503 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,503 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,503 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,503 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,503 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,504 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,504 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,504 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,504 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,505 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,505 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,505 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,505 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,506 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,507 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,508 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,508 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,508 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,508 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,509 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,510 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,510 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,510 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,511 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,511 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,511 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,512 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,512 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,512 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,512 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,513 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,513 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,513 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,514 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,514 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,514 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,514 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,514 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,515 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,515 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,515 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,515 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,515 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,516 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,516 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,516 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,516 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,517 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,517 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,517 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,517 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,518 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,518 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,518 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,518 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,519 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,519 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,519 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,519 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,520 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,520 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,520 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,520 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,521 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,521 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,521 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,521 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,521 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,522 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,522 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,522 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,522 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,522 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,526 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,526 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,526 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,527 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,527 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,531 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,531 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,532 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,532 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,532 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,532 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,532 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,532 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,533 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-06 23:56:24,535 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-06 23:56:24,584 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:56:24,592 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:56:24,592 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-06 23:56:24,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 132 places, 135 transitions, 286 flow [2021-12-06 23:56:24,662 INFO L129 PetriNetUnfolder]: 10/133 cut-off events. [2021-12-06 23:56:24,662 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-06 23:56:24,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 133 events. 10/133 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 140 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 85. Up to 3 conditions per place. [2021-12-06 23:56:24,666 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 135 transitions, 286 flow [2021-12-06 23:56:24,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 121 transitions, 254 flow [2021-12-06 23:56:24,700 INFO L129 PetriNetUnfolder]: 8/120 cut-off events. [2021-12-06 23:56:24,700 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-06 23:56:24,700 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:56:24,701 INFO L254 CegarLoopForPetriNet]: 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, 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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:24,701 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 23:56:24,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash 546892702, now seen corresponding path program 1 times [2021-12-06 23:56:24,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:24,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130710157] [2021-12-06 23:56:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:24,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:24,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:56:24,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:24,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130710157] [2021-12-06 23:56:24,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130710157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:24,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:24,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:56:24,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227487031] [2021-12-06 23:56:24,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:24,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:56:24,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:24,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:56:24,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:56:24,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 135 [2021-12-06 23:56:24,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 121 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:24,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:56:24,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 135 [2021-12-06 23:56:24,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:56:24,979 INFO L129 PetriNetUnfolder]: 4/117 cut-off events. [2021-12-06 23:56:24,979 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2021-12-06 23:56:24,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 117 events. 4/117 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 7/120 useless extension candidates. Maximal degree in co-relation 84. Up to 5 conditions per place. [2021-12-06 23:56:24,982 INFO L132 encePairwiseOnDemand]: 131/135 looper letters, 4 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2021-12-06 23:56:24,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 117 transitions, 254 flow [2021-12-06 23:56:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:56:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-06 23:56:24,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 258 transitions. [2021-12-06 23:56:24,993 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9555555555555556 [2021-12-06 23:56:24,994 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 258 transitions. [2021-12-06 23:56:24,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 258 transitions. [2021-12-06 23:56:24,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:56:24,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 258 transitions. [2021-12-06 23:56:25,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 129.0) internal successors, (258), 2 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,007 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,008 INFO L186 Difference]: Start difference. First operand has 120 places, 121 transitions, 254 flow. Second operand 2 states and 258 transitions. [2021-12-06 23:56:25,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 117 transitions, 254 flow [2021-12-06 23:56:25,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-06 23:56:25,015 INFO L242 Difference]: Finished difference. Result has 117 places, 117 transitions, 238 flow [2021-12-06 23:56:25,017 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=238, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2021-12-06 23:56:25,021 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, -3 predicate places. [2021-12-06 23:56:25,021 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 238 flow [2021-12-06 23:56:25,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,022 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:56:25,022 INFO L254 CegarLoopForPetriNet]: 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, 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, 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, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:25,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:56:25,022 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 23:56:25,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:25,023 INFO L85 PathProgramCache]: Analyzing trace with hash -494092674, now seen corresponding path program 1 times [2021-12-06 23:56:25,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:25,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803701257] [2021-12-06 23:56:25,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:25,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:56:25,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:25,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803701257] [2021-12-06 23:56:25,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803701257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:25,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:25,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:56:25,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115555763] [2021-12-06 23:56:25,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:25,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:56:25,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:25,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:56:25,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:56:25,142 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 135 [2021-12-06 23:56:25,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:56:25,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 135 [2021-12-06 23:56:25,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:56:25,194 INFO L129 PetriNetUnfolder]: 18/200 cut-off events. [2021-12-06 23:56:25,195 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-06 23:56:25,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 200 events. 18/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 549 event pairs, 3 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 240. Up to 22 conditions per place. [2021-12-06 23:56:25,197 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 12 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2021-12-06 23:56:25,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 121 transitions, 275 flow [2021-12-06 23:56:25,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:56:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:56:25,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2021-12-06 23:56:25,202 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9185185185185185 [2021-12-06 23:56:25,202 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2021-12-06 23:56:25,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2021-12-06 23:56:25,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:56:25,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2021-12-06 23:56:25,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,208 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,208 INFO L186 Difference]: Start difference. First operand has 117 places, 117 transitions, 238 flow. Second operand 3 states and 372 transitions. [2021-12-06 23:56:25,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 121 transitions, 275 flow [2021-12-06 23:56:25,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 275 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 23:56:25,213 INFO L242 Difference]: Finished difference. Result has 120 places, 118 transitions, 250 flow [2021-12-06 23:56:25,213 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=120, PETRI_TRANSITIONS=118} [2021-12-06 23:56:25,214 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 0 predicate places. [2021-12-06 23:56:25,214 INFO L470 AbstractCegarLoop]: Abstraction has has 120 places, 118 transitions, 250 flow [2021-12-06 23:56:25,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.33333333333333) internal successors, (364), 3 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,215 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:56:25,215 INFO L254 CegarLoopForPetriNet]: 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:25,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:56:25,215 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 23:56:25,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:25,216 INFO L85 PathProgramCache]: Analyzing trace with hash -963664370, now seen corresponding path program 1 times [2021-12-06 23:56:25,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:25,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390545224] [2021-12-06 23:56:25,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:25,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:56:25,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:25,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390545224] [2021-12-06 23:56:25,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390545224] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:56:25,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658276273] [2021-12-06 23:56:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:25,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:25,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:56:25,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:56:25,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:56:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:56:25,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:56:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:56:25,552 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:56:25,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658276273] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:25,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:56:25,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-12-06 23:56:25,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789229552] [2021-12-06 23:56:25,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:25,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:56:25,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:25,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:56:25,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:56:25,555 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 135 [2021-12-06 23:56:25,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 118 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:56:25,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 135 [2021-12-06 23:56:25,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:56:25,606 INFO L129 PetriNetUnfolder]: 20/195 cut-off events. [2021-12-06 23:56:25,606 INFO L130 PetriNetUnfolder]: For 14/15 co-relation queries the response was YES. [2021-12-06 23:56:25,608 INFO L84 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 195 events. 20/195 cut-off events. For 14/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 547 event pairs, 7 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 241. Up to 28 conditions per place. [2021-12-06 23:56:25,609 INFO L132 encePairwiseOnDemand]: 132/135 looper letters, 15 selfloop transitions, 2 changer transitions 0/123 dead transitions. [2021-12-06 23:56:25,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 123 transitions, 295 flow [2021-12-06 23:56:25,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:56:25,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:56:25,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2021-12-06 23:56:25,611 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9111111111111111 [2021-12-06 23:56:25,611 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2021-12-06 23:56:25,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2021-12-06 23:56:25,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:56:25,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2021-12-06 23:56:25,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,616 INFO L186 Difference]: Start difference. First operand has 120 places, 118 transitions, 250 flow. Second operand 3 states and 369 transitions. [2021-12-06 23:56:25,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 123 transitions, 295 flow [2021-12-06 23:56:25,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 123 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:56:25,621 INFO L242 Difference]: Finished difference. Result has 122 places, 119 transitions, 260 flow [2021-12-06 23:56:25,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=260, PETRI_PLACES=122, PETRI_TRANSITIONS=119} [2021-12-06 23:56:25,622 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 2 predicate places. [2021-12-06 23:56:25,622 INFO L470 AbstractCegarLoop]: Abstraction has has 122 places, 119 transitions, 260 flow [2021-12-06 23:56:25,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:25,623 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:56:25,623 INFO L254 CegarLoopForPetriNet]: 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, 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, 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, 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, 1] [2021-12-06 23:56:25,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:56:25,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:25,825 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 23:56:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:25,826 INFO L85 PathProgramCache]: Analyzing trace with hash -786293827, now seen corresponding path program 1 times [2021-12-06 23:56:25,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:25,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907888725] [2021-12-06 23:56:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:25,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:56:25,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:25,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907888725] [2021-12-06 23:56:25,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907888725] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:56:25,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146425797] [2021-12-06 23:56:25,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:25,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:25,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:56:25,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:56:25,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:56:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:26,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:56:26,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:56:26,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:56:26,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:56:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:56:26,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146425797] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:56:26,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:56:26,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2021-12-06 23:56:26,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698652765] [2021-12-06 23:56:26,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:56:26,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:56:26,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:26,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:56:26,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:56:26,291 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 135 [2021-12-06 23:56:26,293 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 119 transitions, 260 flow. Second operand has 10 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:26,293 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:56:26,293 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 135 [2021-12-06 23:56:26,293 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:56:26,381 INFO L129 PetriNetUnfolder]: 26/229 cut-off events. [2021-12-06 23:56:26,382 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-06 23:56:26,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 229 events. 26/229 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 540 event pairs, 4 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 312. Up to 17 conditions per place. [2021-12-06 23:56:26,383 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 18 selfloop transitions, 9 changer transitions 0/134 dead transitions. [2021-12-06 23:56:26,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 134 transitions, 353 flow [2021-12-06 23:56:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:56:26,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-06 23:56:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1091 transitions. [2021-12-06 23:56:26,386 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8979423868312757 [2021-12-06 23:56:26,387 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1091 transitions. [2021-12-06 23:56:26,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1091 transitions. [2021-12-06 23:56:26,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:56:26,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1091 transitions. [2021-12-06 23:56:26,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 121.22222222222223) internal successors, (1091), 9 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:26,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:26,394 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 135.0) internal successors, (1350), 10 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:26,394 INFO L186 Difference]: Start difference. First operand has 122 places, 119 transitions, 260 flow. Second operand 9 states and 1091 transitions. [2021-12-06 23:56:26,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 134 transitions, 353 flow [2021-12-06 23:56:26,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 134 transitions, 351 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:56:26,397 INFO L242 Difference]: Finished difference. Result has 132 places, 125 transitions, 308 flow [2021-12-06 23:56:26,398 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=308, PETRI_PLACES=132, PETRI_TRANSITIONS=125} [2021-12-06 23:56:26,398 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 12 predicate places. [2021-12-06 23:56:26,398 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 125 transitions, 308 flow [2021-12-06 23:56:26,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.1) internal successors, (1201), 10 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:26,399 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:56:26,399 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:26,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:56:26,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:26,600 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 23:56:26,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:26,601 INFO L85 PathProgramCache]: Analyzing trace with hash 211684319, now seen corresponding path program 2 times [2021-12-06 23:56:26,601 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:26,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376327233] [2021-12-06 23:56:26,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:26,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:26,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:26,655 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:56:26,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:26,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376327233] [2021-12-06 23:56:26,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376327233] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:56:26,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393093124] [2021-12-06 23:56:26,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:56:26,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:26,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:56:26,657 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:56:26,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:56:26,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:56:26,738 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:56:26,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:56:26,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:56:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 23:56:26,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:56:26,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393093124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:26,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:56:26,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-12-06 23:56:26,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192852027] [2021-12-06 23:56:26,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:26,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:56:26,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:26,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:56:26,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:56:26,865 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 135 [2021-12-06 23:56:26,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 125 transitions, 308 flow. Second operand has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:26,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:56:26,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 135 [2021-12-06 23:56:26,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:56:27,065 INFO L129 PetriNetUnfolder]: 307/1229 cut-off events. [2021-12-06 23:56:27,065 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-12-06 23:56:27,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1950 conditions, 1229 events. 307/1229 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7020 event pairs, 41 based on Foata normal form. 0/1117 useless extension candidates. Maximal degree in co-relation 1942. Up to 186 conditions per place. [2021-12-06 23:56:27,076 INFO L132 encePairwiseOnDemand]: 126/135 looper letters, 32 selfloop transitions, 18 changer transitions 0/160 dead transitions. [2021-12-06 23:56:27,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 160 transitions, 484 flow [2021-12-06 23:56:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:56:27,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-06 23:56:27,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 851 transitions. [2021-12-06 23:56:27,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9005291005291005 [2021-12-06 23:56:27,080 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 851 transitions. [2021-12-06 23:56:27,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 851 transitions. [2021-12-06 23:56:27,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:56:27,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 851 transitions. [2021-12-06 23:56:27,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:27,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:27,086 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 135.0) internal successors, (1080), 8 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:27,087 INFO L186 Difference]: Start difference. First operand has 132 places, 125 transitions, 308 flow. Second operand 7 states and 851 transitions. [2021-12-06 23:56:27,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 160 transitions, 484 flow [2021-12-06 23:56:27,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 160 transitions, 478 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-12-06 23:56:27,094 INFO L242 Difference]: Finished difference. Result has 143 places, 143 transitions, 442 flow [2021-12-06 23:56:27,094 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=143, PETRI_TRANSITIONS=143} [2021-12-06 23:56:27,095 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 23 predicate places. [2021-12-06 23:56:27,095 INFO L470 AbstractCegarLoop]: Abstraction has has 143 places, 143 transitions, 442 flow [2021-12-06 23:56:27,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:27,096 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:56:27,096 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:27,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:56:27,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:27,297 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 23:56:27,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:27,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1479845303, now seen corresponding path program 3 times [2021-12-06 23:56:27,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:27,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152690563] [2021-12-06 23:56:27,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:27,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:27,361 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 23:56:27,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:27,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152690563] [2021-12-06 23:56:27,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152690563] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:56:27,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979619737] [2021-12-06 23:56:27,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:56:27,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:27,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:56:27,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:56:27,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:56:27,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 23:56:27,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:56:27,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:56:27,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:56:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:56:27,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:56:27,727 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:56:27,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979619737] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:56:27,728 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:56:27,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 12 [2021-12-06 23:56:27,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660897266] [2021-12-06 23:56:27,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:56:27,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:56:27,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:27,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:56:27,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:56:27,731 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 135 [2021-12-06 23:56:27,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 143 transitions, 442 flow. Second operand has 12 states, 12 states have (on average 112.75) internal successors, (1353), 12 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:27,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:56:27,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 135 [2021-12-06 23:56:27,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:56:28,489 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L894-3-->L897: Formula: (= v_~total~0_1 (+ v_~total~0_2 v_thread2Thread1of1ForFork0_~j~0_11)) InVars {thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_2} OutVars{thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_1} AuxVars[] AssignedVars[~total~0][315], [2413#(and (<= |thread1Thread1of1ForFork1_#t~post7| 1) (<= thread1Thread1of1ForFork1_~i~0 1)), 102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 27#L897true, Black: 863#(< thread1Thread1of1ForFork1_~i~0 4), Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), Black: 439#true, 135#true, 21#L885-1true, 1117#(<= 1 ~num~0), 1104#(and (< |thread1Thread1of1ForFork1_#t~post7| 3) (<= thread1Thread1of1ForFork1_~i~0 1))]) [2021-12-06 23:56:28,489 INFO L384 tUnfolder$Statistics]: this new event has 124 ancestors and is cut-off event [2021-12-06 23:56:28,489 INFO L387 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2021-12-06 23:56:28,489 INFO L387 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2021-12-06 23:56:28,489 INFO L387 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2021-12-06 23:56:28,489 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L894-3-->L897: Formula: (= v_~total~0_1 (+ v_~total~0_2 v_thread2Thread1of1ForFork0_~j~0_11)) InVars {thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_2} OutVars{thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_1} AuxVars[] AssignedVars[~total~0][316], [1106#(and (< thread1Thread1of1ForFork1_~i~0 4) (< |thread1Thread1of1ForFork1_#t~post7| 3)), 2420#(and (<= |thread1Thread1of1ForFork1_#t~post7| 1) (<= thread1Thread1of1ForFork1_~i~0 2)), 102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), 57#L885-2true, Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 27#L897true, Black: 863#(< thread1Thread1of1ForFork1_~i~0 4), Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), Black: 439#true, 135#true, 1117#(<= 1 ~num~0)]) [2021-12-06 23:56:28,489 INFO L384 tUnfolder$Statistics]: this new event has 125 ancestors and is cut-off event [2021-12-06 23:56:28,489 INFO L387 tUnfolder$Statistics]: existing Event has 121 ancestors and is cut-off event [2021-12-06 23:56:28,489 INFO L387 tUnfolder$Statistics]: existing Event has 121 ancestors and is cut-off event [2021-12-06 23:56:28,489 INFO L387 tUnfolder$Statistics]: existing Event has 121 ancestors and is cut-off event [2021-12-06 23:56:28,490 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L894-3-->L897: Formula: (= v_~total~0_1 (+ v_~total~0_2 v_thread2Thread1of1ForFork0_~j~0_11)) InVars {thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_2} OutVars{thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_1} AuxVars[] AssignedVars[~total~0][321], [102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 27#L897true, 863#(< thread1Thread1of1ForFork1_~i~0 4), 106#L878-2true, Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), Black: 439#true, 1845#(<= thread1Thread1of1ForFork1_~i~0 2), 135#true, 1117#(<= 1 ~num~0)]) [2021-12-06 23:56:28,490 INFO L384 tUnfolder$Statistics]: this new event has 122 ancestors and is cut-off event [2021-12-06 23:56:28,490 INFO L387 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2021-12-06 23:56:28,490 INFO L387 tUnfolder$Statistics]: existing Event has 126 ancestors and is cut-off event [2021-12-06 23:56:28,490 INFO L387 tUnfolder$Statistics]: existing Event has 122 ancestors and is cut-off event [2021-12-06 23:56:28,500 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([333] L885-->L885-1: Formula: (= |v_thread1Thread1of1ForFork1_#t~post7_1| v_thread1Thread1of1ForFork1_~i~0_9) InVars {thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_9} OutVars{thread1Thread1of1ForFork1_#t~post7=|v_thread1Thread1of1ForFork1_#t~post7_1|, thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_9} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post7][285], [2413#(and (<= |thread1Thread1of1ForFork1_#t~post7| 1) (<= thread1Thread1of1ForFork1_~i~0 1)), 102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 27#L897true, Black: 863#(< thread1Thread1of1ForFork1_~i~0 4), Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), Black: 439#true, 135#true, 21#L885-1true, 1117#(<= 1 ~num~0), 1104#(and (< |thread1Thread1of1ForFork1_#t~post7| 3) (<= thread1Thread1of1ForFork1_~i~0 1))]) [2021-12-06 23:56:28,500 INFO L384 tUnfolder$Statistics]: this new event has 124 ancestors and is cut-off event [2021-12-06 23:56:28,500 INFO L387 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2021-12-06 23:56:28,500 INFO L387 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2021-12-06 23:56:28,501 INFO L387 tUnfolder$Statistics]: existing Event has 120 ancestors and is cut-off event [2021-12-06 23:56:28,501 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L894-3-->L897: Formula: (= v_~total~0_1 (+ v_~total~0_2 v_thread2Thread1of1ForFork0_~j~0_11)) InVars {thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_2} OutVars{thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_1} AuxVars[] AssignedVars[~total~0][321], [102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 863#(< thread1Thread1of1ForFork1_~i~0 4), 27#L897true, Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), Black: 439#true, 1845#(<= thread1Thread1of1ForFork1_~i~0 2), 135#true, 1117#(<= 1 ~num~0), 23#L879true]) [2021-12-06 23:56:28,501 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2021-12-06 23:56:28,501 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2021-12-06 23:56:28,501 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2021-12-06 23:56:28,501 INFO L387 tUnfolder$Statistics]: existing Event has 127 ancestors and is cut-off event [2021-12-06 23:56:28,566 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L894-3-->L897: Formula: (= v_~total~0_1 (+ v_~total~0_2 v_thread2Thread1of1ForFork0_~j~0_11)) InVars {thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_2} OutVars{thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_1} AuxVars[] AssignedVars[~total~0][376], [102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 57#L885-2true, 2428#(and (<= thread1Thread1of1ForFork1_~i~0 3) (<= |thread1Thread1of1ForFork1_#t~post7| 2)), 27#L897true, Black: 863#(< thread1Thread1of1ForFork1_~i~0 4), Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), 135#true, 1117#(<= 1 ~num~0), 439#true]) [2021-12-06 23:56:28,566 INFO L384 tUnfolder$Statistics]: this new event has 136 ancestors and is cut-off event [2021-12-06 23:56:28,566 INFO L387 tUnfolder$Statistics]: existing Event has 132 ancestors and is cut-off event [2021-12-06 23:56:28,566 INFO L387 tUnfolder$Statistics]: existing Event has 132 ancestors and is cut-off event [2021-12-06 23:56:28,566 INFO L387 tUnfolder$Statistics]: existing Event has 132 ancestors and is cut-off event [2021-12-06 23:56:28,566 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L894-3-->L897: Formula: (= v_~total~0_1 (+ v_~total~0_2 v_thread2Thread1of1ForFork0_~j~0_11)) InVars {thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_2} OutVars{thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_1} AuxVars[] AssignedVars[~total~0][375], [2426#(and (<= |thread1Thread1of1ForFork1_#t~post7| 2) (<= thread1Thread1of1ForFork1_~i~0 2)), 102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 863#(< thread1Thread1of1ForFork1_~i~0 4), 27#L897true, Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), Black: 439#true, 135#true, 21#L885-1true, 1117#(<= 1 ~num~0)]) [2021-12-06 23:56:28,566 INFO L384 tUnfolder$Statistics]: this new event has 135 ancestors and is cut-off event [2021-12-06 23:56:28,567 INFO L387 tUnfolder$Statistics]: existing Event has 131 ancestors and is cut-off event [2021-12-06 23:56:28,567 INFO L387 tUnfolder$Statistics]: existing Event has 131 ancestors and is cut-off event [2021-12-06 23:56:28,567 INFO L387 tUnfolder$Statistics]: existing Event has 131 ancestors and is cut-off event [2021-12-06 23:56:28,567 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L894-3-->L897: Formula: (= v_~total~0_1 (+ v_~total~0_2 v_thread2Thread1of1ForFork0_~j~0_11)) InVars {thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_2} OutVars{thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_1} AuxVars[] AssignedVars[~total~0][381], [1880#(<= thread1Thread1of1ForFork1_~i~0 3), 102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 27#L897true, 106#L878-2true, Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 863#(< thread1Thread1of1ForFork1_~i~0 4), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), 135#true, 1117#(<= 1 ~num~0), 439#true]) [2021-12-06 23:56:28,567 INFO L384 tUnfolder$Statistics]: this new event has 133 ancestors and is cut-off event [2021-12-06 23:56:28,567 INFO L387 tUnfolder$Statistics]: existing Event has 137 ancestors and is cut-off event [2021-12-06 23:56:28,567 INFO L387 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2021-12-06 23:56:28,567 INFO L387 tUnfolder$Statistics]: existing Event has 133 ancestors and is cut-off event [2021-12-06 23:56:28,573 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([333] L885-->L885-1: Formula: (= |v_thread1Thread1of1ForFork1_#t~post7_1| v_thread1Thread1of1ForFork1_~i~0_9) InVars {thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_9} OutVars{thread1Thread1of1ForFork1_#t~post7=|v_thread1Thread1of1ForFork1_#t~post7_1|, thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_9} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post7][344], [2426#(and (<= |thread1Thread1of1ForFork1_#t~post7| 2) (<= thread1Thread1of1ForFork1_~i~0 2)), 102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 863#(< thread1Thread1of1ForFork1_~i~0 4), 27#L897true, Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), Black: 439#true, 21#L885-1true, 135#true, 1117#(<= 1 ~num~0)]) [2021-12-06 23:56:28,573 INFO L384 tUnfolder$Statistics]: this new event has 135 ancestors and is cut-off event [2021-12-06 23:56:28,573 INFO L387 tUnfolder$Statistics]: existing Event has 131 ancestors and is cut-off event [2021-12-06 23:56:28,573 INFO L387 tUnfolder$Statistics]: existing Event has 131 ancestors and is cut-off event [2021-12-06 23:56:28,573 INFO L387 tUnfolder$Statistics]: existing Event has 131 ancestors and is cut-off event [2021-12-06 23:56:28,573 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L894-3-->L897: Formula: (= v_~total~0_1 (+ v_~total~0_2 v_thread2Thread1of1ForFork0_~j~0_11)) InVars {thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_2} OutVars{thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_1} AuxVars[] AssignedVars[~total~0][381], [1880#(<= thread1Thread1of1ForFork1_~i~0 3), 102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 27#L897true, 863#(< thread1Thread1of1ForFork1_~i~0 4), Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), Black: 439#true, 135#true, 1117#(<= 1 ~num~0), 23#L879true]) [2021-12-06 23:56:28,573 INFO L384 tUnfolder$Statistics]: this new event has 134 ancestors and is cut-off event [2021-12-06 23:56:28,574 INFO L387 tUnfolder$Statistics]: existing Event has 138 ancestors and is cut-off event [2021-12-06 23:56:28,574 INFO L387 tUnfolder$Statistics]: existing Event has 134 ancestors and is cut-off event [2021-12-06 23:56:28,574 INFO L387 tUnfolder$Statistics]: existing Event has 134 ancestors and is cut-off event [2021-12-06 23:56:28,617 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([351] L894-3-->L897: Formula: (= v_~total~0_1 (+ v_~total~0_2 v_thread2Thread1of1ForFork0_~j~0_11)) InVars {thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_2} OutVars{thread2Thread1of1ForFork0_~j~0=v_thread2Thread1of1ForFork0_~j~0_11, ~total~0=v_~total~0_1} AuxVars[] AssignedVars[~total~0][381], [1880#(<= thread1Thread1of1ForFork1_~i~0 3), 102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 863#(< thread1Thread1of1ForFork1_~i~0 4), 27#L897true, Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), Black: 439#true, 21#L885-1true, 135#true, 1117#(<= 1 ~num~0)]) [2021-12-06 23:56:28,617 INFO L384 tUnfolder$Statistics]: this new event has 146 ancestors and is cut-off event [2021-12-06 23:56:28,617 INFO L387 tUnfolder$Statistics]: existing Event has 142 ancestors and is cut-off event [2021-12-06 23:56:28,617 INFO L387 tUnfolder$Statistics]: existing Event has 142 ancestors and is cut-off event [2021-12-06 23:56:28,617 INFO L387 tUnfolder$Statistics]: existing Event has 142 ancestors and is cut-off event [2021-12-06 23:56:28,620 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([333] L885-->L885-1: Formula: (= |v_thread1Thread1of1ForFork1_#t~post7_1| v_thread1Thread1of1ForFork1_~i~0_9) InVars {thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_9} OutVars{thread1Thread1of1ForFork1_#t~post7=|v_thread1Thread1of1ForFork1_#t~post7_1|, thread1Thread1of1ForFork1_~i~0=v_thread1Thread1of1ForFork1_~i~0_9} AuxVars[] AssignedVars[thread1Thread1of1ForFork1_#t~post7][387], [1880#(<= thread1Thread1of1ForFork1_~i~0 3), 102#L914-4true, Black: 1265#(<= 0 ~num~0), Black: 1113#true, Black: 140#(= thread1Thread1of1ForFork1_~i~0 0), Black: 1511#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 0 ~num~0)), Black: 1513#(and (<= 0 |thread1Thread1of1ForFork1_#t~post6|) (<= 1 ~num~0)), Black: 1326#(<= 0 |thread1Thread1of1ForFork1_#t~post6|), 863#(< thread1Thread1of1ForFork1_~i~0 4), 27#L897true, Black: 409#(<= thread2Thread1of1ForFork0_~j~0 0), Black: 443#(<= thread1Thread1of1ForFork1_~i~0 1), Black: 439#true, 21#L885-1true, 135#true, 1117#(<= 1 ~num~0)]) [2021-12-06 23:56:28,620 INFO L384 tUnfolder$Statistics]: this new event has 146 ancestors and is cut-off event [2021-12-06 23:56:28,620 INFO L387 tUnfolder$Statistics]: existing Event has 142 ancestors and is cut-off event [2021-12-06 23:56:28,620 INFO L387 tUnfolder$Statistics]: existing Event has 142 ancestors and is cut-off event [2021-12-06 23:56:28,620 INFO L387 tUnfolder$Statistics]: existing Event has 142 ancestors and is cut-off event [2021-12-06 23:56:28,637 INFO L129 PetriNetUnfolder]: 1090/3724 cut-off events. [2021-12-06 23:56:28,637 INFO L130 PetriNetUnfolder]: For 2004/2119 co-relation queries the response was YES. [2021-12-06 23:56:28,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8282 conditions, 3724 events. 1090/3724 cut-off events. For 2004/2119 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27883 event pairs, 77 based on Foata normal form. 109/3761 useless extension candidates. Maximal degree in co-relation 8268. Up to 293 conditions per place. [2021-12-06 23:56:28,668 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 177 selfloop transitions, 109 changer transitions 0/401 dead transitions. [2021-12-06 23:56:28,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 401 transitions, 1868 flow [2021-12-06 23:56:28,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-06 23:56:28,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-12-06 23:56:28,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 6406 transitions. [2021-12-06 23:56:28,681 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8473544973544973 [2021-12-06 23:56:28,681 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 6406 transitions. [2021-12-06 23:56:28,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 6406 transitions. [2021-12-06 23:56:28,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:56:28,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 6406 transitions. [2021-12-06 23:56:28,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 114.39285714285714) internal successors, (6406), 56 states have internal predecessors, (6406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:28,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 135.0) internal successors, (7695), 57 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:28,726 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 135.0) internal successors, (7695), 57 states have internal predecessors, (7695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:28,726 INFO L186 Difference]: Start difference. First operand has 143 places, 143 transitions, 442 flow. Second operand 56 states and 6406 transitions. [2021-12-06 23:56:28,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 401 transitions, 1868 flow [2021-12-06 23:56:28,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 401 transitions, 1868 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-06 23:56:28,739 INFO L242 Difference]: Finished difference. Result has 239 places, 242 transitions, 1357 flow [2021-12-06 23:56:28,740 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=1357, PETRI_PLACES=239, PETRI_TRANSITIONS=242} [2021-12-06 23:56:28,740 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 119 predicate places. [2021-12-06 23:56:28,740 INFO L470 AbstractCegarLoop]: Abstraction has has 239 places, 242 transitions, 1357 flow [2021-12-06 23:56:28,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 112.75) internal successors, (1353), 12 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:28,741 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:56:28,741 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:28,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:56:28,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:28,942 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 23:56:28,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:28,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1766245062, now seen corresponding path program 4 times [2021-12-06 23:56:28,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:28,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647011240] [2021-12-06 23:56:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:28,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:28,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:28,987 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-06 23:56:28,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:28,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647011240] [2021-12-06 23:56:28,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647011240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:56:28,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:56:28,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:56:28,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747586989] [2021-12-06 23:56:28,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:56:28,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:56:28,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:28,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:56:28,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:56:28,989 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 135 [2021-12-06 23:56:28,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 242 transitions, 1357 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:28,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:56:28,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 135 [2021-12-06 23:56:28,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:56:29,290 INFO L129 PetriNetUnfolder]: 257/1530 cut-off events. [2021-12-06 23:56:29,291 INFO L130 PetriNetUnfolder]: For 5341/5367 co-relation queries the response was YES. [2021-12-06 23:56:29,304 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 1530 events. 257/1530 cut-off events. For 5341/5367 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9437 event pairs, 33 based on Foata normal form. 128/1647 useless extension candidates. Maximal degree in co-relation 4145. Up to 194 conditions per place. [2021-12-06 23:56:29,312 INFO L132 encePairwiseOnDemand]: 127/135 looper letters, 16 selfloop transitions, 8 changer transitions 0/234 dead transitions. [2021-12-06 23:56:29,312 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 234 transitions, 1353 flow [2021-12-06 23:56:29,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:56:29,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-06 23:56:29,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2021-12-06 23:56:29,314 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2021-12-06 23:56:29,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2021-12-06 23:56:29,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2021-12-06 23:56:29,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:56:29,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2021-12-06 23:56:29,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:29,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:29,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 135.0) internal successors, (540), 4 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:29,317 INFO L186 Difference]: Start difference. First operand has 239 places, 242 transitions, 1357 flow. Second operand 3 states and 349 transitions. [2021-12-06 23:56:29,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 234 transitions, 1353 flow [2021-12-06 23:56:29,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 234 transitions, 1221 flow, removed 27 selfloop flow, removed 9 redundant places. [2021-12-06 23:56:29,345 INFO L242 Difference]: Finished difference. Result has 231 places, 232 transitions, 1183 flow [2021-12-06 23:56:29,345 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1183, PETRI_PLACES=231, PETRI_TRANSITIONS=232} [2021-12-06 23:56:29,346 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 111 predicate places. [2021-12-06 23:56:29,346 INFO L470 AbstractCegarLoop]: Abstraction has has 231 places, 232 transitions, 1183 flow [2021-12-06 23:56:29,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:29,346 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:56:29,346 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:56:29,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:56:29,346 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 23:56:29,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:29,347 INFO L85 PathProgramCache]: Analyzing trace with hash -211696674, now seen corresponding path program 5 times [2021-12-06 23:56:29,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:29,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675807413] [2021-12-06 23:56:29,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:29,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 23:56:29,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:29,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675807413] [2021-12-06 23:56:29,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675807413] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:56:29,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303391930] [2021-12-06 23:56:29,432 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 23:56:29,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:29,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:56:29,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:56:29,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:56:29,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-12-06 23:56:29,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:56:29,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:56:29,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:56:29,628 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 23:56:29,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:56:29,747 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 23:56:29,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303391930] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:56:29,747 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:56:29,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-06 23:56:29,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144907835] [2021-12-06 23:56:29,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:56:29,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:56:29,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:29,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:56:29,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:56:29,749 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 135 [2021-12-06 23:56:29,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 232 transitions, 1183 flow. Second operand has 11 states, 11 states have (on average 118.72727272727273) internal successors, (1306), 11 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:29,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:56:29,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 135 [2021-12-06 23:56:29,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:56:30,132 INFO L129 PetriNetUnfolder]: 349/2048 cut-off events. [2021-12-06 23:56:30,133 INFO L130 PetriNetUnfolder]: For 12066/12158 co-relation queries the response was YES. [2021-12-06 23:56:30,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5981 conditions, 2048 events. 349/2048 cut-off events. For 12066/12158 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 13541 event pairs, 55 based on Foata normal form. 87/2109 useless extension candidates. Maximal degree in co-relation 5927. Up to 245 conditions per place. [2021-12-06 23:56:30,150 INFO L132 encePairwiseOnDemand]: 129/135 looper letters, 27 selfloop transitions, 56 changer transitions 0/254 dead transitions. [2021-12-06 23:56:30,150 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 254 transitions, 1515 flow [2021-12-06 23:56:30,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:56:30,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-12-06 23:56:30,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1433 transitions. [2021-12-06 23:56:30,154 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8845679012345679 [2021-12-06 23:56:30,154 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1433 transitions. [2021-12-06 23:56:30,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1433 transitions. [2021-12-06 23:56:30,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:56:30,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1433 transitions. [2021-12-06 23:56:30,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 119.41666666666667) internal successors, (1433), 12 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:30,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:30,160 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 135.0) internal successors, (1755), 13 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:30,160 INFO L186 Difference]: Start difference. First operand has 231 places, 232 transitions, 1183 flow. Second operand 12 states and 1433 transitions. [2021-12-06 23:56:30,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 254 transitions, 1515 flow [2021-12-06 23:56:30,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 254 transitions, 1507 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-06 23:56:30,184 INFO L242 Difference]: Finished difference. Result has 244 places, 238 transitions, 1433 flow [2021-12-06 23:56:30,184 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1433, PETRI_PLACES=244, PETRI_TRANSITIONS=238} [2021-12-06 23:56:30,185 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 124 predicate places. [2021-12-06 23:56:30,185 INFO L470 AbstractCegarLoop]: Abstraction has has 244 places, 238 transitions, 1433 flow [2021-12-06 23:56:30,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 118.72727272727273) internal successors, (1306), 11 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:30,186 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:56:30,186 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1] [2021-12-06 23:56:30,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:56:30,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:30,387 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 23:56:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash 870212256, now seen corresponding path program 6 times [2021-12-06 23:56:30,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:30,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297941471] [2021-12-06 23:56:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:30,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 99 proven. 29 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:56:30,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:30,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297941471] [2021-12-06 23:56:30,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297941471] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:56:30,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269764633] [2021-12-06 23:56:30,598 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 23:56:30,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:30,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:56:30,598 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:56:30,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:56:30,722 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-12-06 23:56:30,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:56:30,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:56:30,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:56:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 67 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-06 23:56:30,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:56:31,003 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 67 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-06 23:56:31,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269764633] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:56:31,003 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:56:31,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6, 6] total 13 [2021-12-06 23:56:31,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788851753] [2021-12-06 23:56:31,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:56:31,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:56:31,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:56:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:56:31,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 135 [2021-12-06 23:56:31,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 238 transitions, 1433 flow. Second operand has 13 states, 13 states have (on average 116.15384615384616) internal successors, (1510), 13 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:31,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:56:31,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 135 [2021-12-06 23:56:31,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:56:31,176 INFO L129 PetriNetUnfolder]: 142/871 cut-off events. [2021-12-06 23:56:31,176 INFO L130 PetriNetUnfolder]: For 6016/6053 co-relation queries the response was YES. [2021-12-06 23:56:31,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 871 events. 142/871 cut-off events. For 6016/6053 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3486 event pairs, 41 based on Foata normal form. 85/942 useless extension candidates. Maximal degree in co-relation 2788. Up to 71 conditions per place. [2021-12-06 23:56:31,183 INFO L132 encePairwiseOnDemand]: 124/135 looper letters, 18 selfloop transitions, 11 changer transitions 0/207 dead transitions. [2021-12-06 23:56:31,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 207 transitions, 1203 flow [2021-12-06 23:56:31,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:56:31,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-12-06 23:56:31,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 931 transitions. [2021-12-06 23:56:31,185 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.862037037037037 [2021-12-06 23:56:31,185 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 931 transitions. [2021-12-06 23:56:31,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 931 transitions. [2021-12-06 23:56:31,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:56:31,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 931 transitions. [2021-12-06 23:56:31,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 116.375) internal successors, (931), 8 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:31,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:31,190 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 135.0) internal successors, (1215), 9 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:31,190 INFO L186 Difference]: Start difference. First operand has 244 places, 238 transitions, 1433 flow. Second operand 8 states and 931 transitions. [2021-12-06 23:56:31,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 207 transitions, 1203 flow [2021-12-06 23:56:31,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 207 transitions, 972 flow, removed 70 selfloop flow, removed 22 redundant places. [2021-12-06 23:56:31,206 INFO L242 Difference]: Finished difference. Result has 219 places, 200 transitions, 930 flow [2021-12-06 23:56:31,206 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=930, PETRI_PLACES=219, PETRI_TRANSITIONS=200} [2021-12-06 23:56:31,207 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 99 predicate places. [2021-12-06 23:56:31,207 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 200 transitions, 930 flow [2021-12-06 23:56:31,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.15384615384616) internal successors, (1510), 13 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:31,208 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-06 23:56:31,208 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1] [2021-12-06 23:56:31,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-06 23:56:31,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:31,410 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-12-06 23:56:31,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:56:31,411 INFO L85 PathProgramCache]: Analyzing trace with hash -698864358, now seen corresponding path program 7 times [2021-12-06 23:56:31,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:56:31,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619640389] [2021-12-06 23:56:31,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:56:31,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:56:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:31,782 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:56:31,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:56:31,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619640389] [2021-12-06 23:56:31,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619640389] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:56:31,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854887924] [2021-12-06 23:56:31,783 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 23:56:31,783 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:56:31,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:56:31,784 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:56:31,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:56:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:56:31,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 23:56:31,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:56:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 4 proven. 141 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:56:32,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:56:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:56:33,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854887924] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:56:33,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:56:33,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 18] total 44 [2021-12-06 23:56:33,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213437129] [2021-12-06 23:56:33,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:56:33,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-12-06 23:56:33,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:56:33,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-12-06 23:56:33,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1705, Unknown=0, NotChecked=0, Total=1892 [2021-12-06 23:56:33,466 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 135 [2021-12-06 23:56:33,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 200 transitions, 930 flow. Second operand has 44 states, 44 states have (on average 113.88636363636364) internal successors, (5011), 44 states have internal predecessors, (5011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:33,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-06 23:56:33,472 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 135 [2021-12-06 23:56:33,472 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-06 23:56:33,969 INFO L129 PetriNetUnfolder]: 128/791 cut-off events. [2021-12-06 23:56:33,969 INFO L130 PetriNetUnfolder]: For 2298/2336 co-relation queries the response was YES. [2021-12-06 23:56:33,974 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2296 conditions, 791 events. 128/791 cut-off events. For 2298/2336 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3015 event pairs, 38 based on Foata normal form. 33/811 useless extension candidates. Maximal degree in co-relation 2255. Up to 51 conditions per place. [2021-12-06 23:56:33,975 INFO L132 encePairwiseOnDemand]: 126/135 looper letters, 0 selfloop transitions, 0 changer transitions 211/211 dead transitions. [2021-12-06 23:56:33,975 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 211 transitions, 1094 flow [2021-12-06 23:56:33,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 23:56:33,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-06 23:56:33,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2280 transitions. [2021-12-06 23:56:33,979 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2021-12-06 23:56:33,979 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2280 transitions. [2021-12-06 23:56:33,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2280 transitions. [2021-12-06 23:56:33,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-06 23:56:33,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2280 transitions. [2021-12-06 23:56:33,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 114.0) internal successors, (2280), 20 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:33,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 135.0) internal successors, (2835), 21 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:33,987 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 135.0) internal successors, (2835), 21 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:33,987 INFO L186 Difference]: Start difference. First operand has 219 places, 200 transitions, 930 flow. Second operand 20 states and 2280 transitions. [2021-12-06 23:56:33,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 211 transitions, 1094 flow [2021-12-06 23:56:33,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 211 transitions, 1070 flow, removed 1 selfloop flow, removed 7 redundant places. [2021-12-06 23:56:33,999 INFO L242 Difference]: Finished difference. Result has 229 places, 0 transitions, 0 flow [2021-12-06 23:56:33,999 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=135, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=0, PETRI_PLACES=229, PETRI_TRANSITIONS=0} [2021-12-06 23:56:33,999 INFO L334 CegarLoopForPetriNet]: 120 programPoint places, 109 predicate places. [2021-12-06 23:56:33,999 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 0 transitions, 0 flow [2021-12-06 23:56:34,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 113.88636363636364) internal successors, (5011), 44 states have internal predecessors, (5011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:56:34,003 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2021-12-06 23:56:34,003 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2021-12-06 23:56:34,003 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2021-12-06 23:56:34,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:56:34,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 23:56:34,215 INFO L732 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1] [2021-12-06 23:56:34,220 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-06 23:56:34,220 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:56:34,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:56:34 BasicIcfg [2021-12-06 23:56:34,229 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:56:34,230 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:56:34,230 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:56:34,231 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:56:34,232 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:56:24" (3/4) ... [2021-12-06 23:56:34,235 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 23:56:34,239 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-12-06 23:56:34,239 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-12-06 23:56:34,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-12-06 23:56:34,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 23:56:34,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 23:56:34,243 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 23:56:34,266 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:56:34,267 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:56:34,267 INFO L158 Benchmark]: Toolchain (without parser) took 10592.98ms. Allocated memory was 127.9MB in the beginning and 287.3MB in the end (delta: 159.4MB). Free memory was 85.3MB in the beginning and 88.9MB in the end (delta: -3.5MB). Peak memory consumption was 155.2MB. Max. memory is 16.1GB. [2021-12-06 23:56:34,267 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:56:34,268 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.32ms. Allocated memory is still 127.9MB. Free memory was 85.2MB in the beginning and 85.3MB in the end (delta: -117.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 23:56:34,268 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.66ms. Allocated memory is still 127.9MB. Free memory was 85.3MB in the beginning and 83.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:56:34,269 INFO L158 Benchmark]: Boogie Preprocessor took 22.51ms. Allocated memory is still 127.9MB. Free memory was 83.2MB in the beginning and 81.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:56:34,269 INFO L158 Benchmark]: RCFGBuilder took 316.12ms. Allocated memory is still 127.9MB. Free memory was 81.7MB in the beginning and 67.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 23:56:34,269 INFO L158 Benchmark]: TraceAbstraction took 9760.10ms. Allocated memory was 127.9MB in the beginning and 287.3MB in the end (delta: 159.4MB). Free memory was 66.5MB in the beginning and 92.9MB in the end (delta: -26.4MB). Peak memory consumption was 136.0MB. Max. memory is 16.1GB. [2021-12-06 23:56:34,270 INFO L158 Benchmark]: Witness Printer took 36.37ms. Allocated memory is still 287.3MB. Free memory was 91.8MB in the beginning and 88.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:56:34,272 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 127.9MB. Free memory is still 103.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.32ms. Allocated memory is still 127.9MB. Free memory was 85.2MB in the beginning and 85.3MB in the end (delta: -117.0kB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.66ms. Allocated memory is still 127.9MB. Free memory was 85.3MB in the beginning and 83.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.51ms. Allocated memory is still 127.9MB. Free memory was 83.2MB in the beginning and 81.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 316.12ms. Allocated memory is still 127.9MB. Free memory was 81.7MB in the beginning and 67.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 9760.10ms. Allocated memory was 127.9MB in the beginning and 287.3MB in the end (delta: 159.4MB). Free memory was 66.5MB in the beginning and 92.9MB in the end (delta: -26.4MB). Peak memory consumption was 136.0MB. Max. memory is 16.1GB. * Witness Printer took 36.37ms. Allocated memory is still 287.3MB. Free memory was 91.8MB in the beginning and 88.9MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 919]: 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 with 1 thread instances CFG has 5 procedures, 171 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.6s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 555 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 555 mSDsluCounter, 299 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 526 mSDsCounter, 133 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1250 IncrementalHoareTripleChecker+Invalid, 1383 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 133 mSolverCounterUnsat, 75 mSDtfsCounter, 1250 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1878 GetRequests, 1710 SyntacticMatches, 5 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1958 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1433occurred in iteration=8, InterpolantAutomatonStates: 123, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 2282 NumberOfCodeBlocks, 2141 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 3010 ConstructedInterpolants, 0 QuantifiedInterpolants, 8550 SizeOfPredicates, 28 NumberOfNonLiveVariables, 2199 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 22 InterpolantComputations, 5 PerfectInterpolantSequences, 789/1405 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-06 23:56:34,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc92b491-8135-4830-a834-849861f51f59/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE