./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY --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 c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:17:59,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:17:59,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:17:59,878 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:17:59,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:17:59,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:17:59,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:17:59,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:17:59,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:17:59,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:17:59,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:17:59,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:17:59,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:17:59,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:17:59,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:17:59,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:17:59,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:17:59,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:17:59,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:17:59,901 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:17:59,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:17:59,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:17:59,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:17:59,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:17:59,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:17:59,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:17:59,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:17:59,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:17:59,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:17:59,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:17:59,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:17:59,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:17:59,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:17:59,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:17:59,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:17:59,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:17:59,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:17:59,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:17:59,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:17:59,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:17:59,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:17:59,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:17:59,984 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:17:59,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:17:59,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:17:59,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:17:59,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:17:59,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:17:59,986 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:17:59,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:17:59,986 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:17:59,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:17:59,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:17:59,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:17:59,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:17:59,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:17:59,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:17:59,988 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:17:59,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:17:59,988 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:17:59,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:17:59,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:17:59,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:17:59,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:17:59,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:17:59,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:17:59,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:17:59,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:17:59,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:17:59,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:17:59,991 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:17:59,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:17:59,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:17:59,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:17:59,991 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_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2021-11-07 08:18:00,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:18:00,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:18:00,262 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:18:00,263 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:18:00,264 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:18:00,265 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-07 08:18:00,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/data/6d6f2da3d/715d73dfa23148e9952e98ddd5137c1c/FLAG8f88cfc35 [2021-11-07 08:18:00,792 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:18:00,794 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2021-11-07 08:18:00,808 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/data/6d6f2da3d/715d73dfa23148e9952e98ddd5137c1c/FLAG8f88cfc35 [2021-11-07 08:18:01,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/data/6d6f2da3d/715d73dfa23148e9952e98ddd5137c1c [2021-11-07 08:18:01,161 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:18:01,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:18:01,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:18:01,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:18:01,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:18:01,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c37a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01, skipping insertion in model container [2021-11-07 08:18:01,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:18:01,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:18:01,390 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-07 08:18:01,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:18:01,408 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:18:01,438 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c[2428,2441] [2021-11-07 08:18:01,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:18:01,460 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:18:01,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01 WrapperNode [2021-11-07 08:18:01,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:18:01,462 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:18:01,462 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:18:01,462 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:18:01,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:18:01,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:18:01,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:18:01,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:18:01,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:18:01,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:18:01,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:18:01,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:18:01,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01" (1/1) ... [2021-11-07 08:18:01,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:18:01,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:18:01,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:18:01,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:18:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:18:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:18:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:18:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 08:18:01,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 08:18:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 08:18:01,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 08:18:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:18:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-07 08:18:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-07 08:18:01,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:18:01,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:18:01,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:18:01,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:18:01,629 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 08:18:02,305 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:18:02,306 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-11-07 08:18:02,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:18:02 BoogieIcfgContainer [2021-11-07 08:18:02,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:18:02,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:18:02,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:18:02,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:18:02,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:18:01" (1/3) ... [2021-11-07 08:18:02,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3e2964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:18:02, skipping insertion in model container [2021-11-07 08:18:02,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:18:01" (2/3) ... [2021-11-07 08:18:02,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3e2964 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:18:02, skipping insertion in model container [2021-11-07 08:18:02,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:18:02" (3/3) ... [2021-11-07 08:18:02,320 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2021-11-07 08:18:02,326 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 08:18:02,326 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:18:02,326 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:18:02,327 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 08:18:02,378 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,379 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,379 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,379 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,379 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,380 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,380 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,381 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,381 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,381 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,381 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,382 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,382 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,382 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,383 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,384 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,384 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,384 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,385 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,385 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,385 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,386 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,386 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,387 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,387 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,388 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,388 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,388 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,389 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,389 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,389 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,390 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,390 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,390 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,390 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,391 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,391 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,391 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,392 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,394 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,395 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,395 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,395 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,395 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,395 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,396 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,396 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,397 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,398 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,398 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,398 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,398 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,398 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,398 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,399 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,399 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,399 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,399 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,399 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,400 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,400 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,400 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,401 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,401 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,402 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,403 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,403 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,404 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,407 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,413 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,413 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~tmp~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,413 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,414 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,414 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,415 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,425 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,425 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,426 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,426 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,426 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,426 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,429 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,430 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_minus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,430 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~tmp~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,430 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,431 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,431 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:18:02,442 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-07 08:18:02,519 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:18:02,525 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 [2021-11-07 08:18:02,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 08:18:02,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 105 places, 107 transitions, 230 flow [2021-11-07 08:18:02,635 INFO L129 PetriNetUnfolder]: 9/105 cut-off events. [2021-11-07 08:18:02,635 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 08:18:02,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 105 events. 9/105 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2021-11-07 08:18:02,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 107 transitions, 230 flow [2021-11-07 08:18:02,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 97 transitions, 206 flow [2021-11-07 08:18:02,682 INFO L129 PetriNetUnfolder]: 9/96 cut-off events. [2021-11-07 08:18:02,682 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 08:18:02,682 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:18:02,683 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] [2021-11-07 08:18:02,683 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:18:02,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:02,692 INFO L85 PathProgramCache]: Analyzing trace with hash -399178274, now seen corresponding path program 1 times [2021-11-07 08:18:02,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:02,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634985392] [2021-11-07 08:18:02,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:02,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:02,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:02,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:02,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634985392] [2021-11-07 08:18:02,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634985392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:18:02,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:18:02,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:18:02,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186000653] [2021-11-07 08:18:02,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:18:02,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:02,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:18:02,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:18:02,937 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 107 [2021-11-07 08:18:02,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 97 transitions, 206 flow. Second operand has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:02,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:18:02,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 107 [2021-11-07 08:18:02,944 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:18:02,974 INFO L129 PetriNetUnfolder]: 3/91 cut-off events. [2021-11-07 08:18:02,974 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 08:18:02,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 3/91 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 6/91 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2021-11-07 08:18:02,976 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 0 selfloop transitions, 0 changer transitions 3/91 dead transitions. [2021-11-07 08:18:02,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 91 transitions, 194 flow [2021-11-07 08:18:02,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:18:02,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-07 08:18:02,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 206 transitions. [2021-11-07 08:18:02,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9626168224299065 [2021-11-07 08:18:02,990 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 206 transitions. [2021-11-07 08:18:02,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 206 transitions. [2021-11-07 08:18:02,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:18:02,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 206 transitions. [2021-11-07 08:18:02,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 103.0) internal successors, (206), 2 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,004 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,006 INFO L186 Difference]: Start difference. First operand has 95 places, 97 transitions, 206 flow. Second operand 2 states and 206 transitions. [2021-11-07 08:18:03,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 91 transitions, 194 flow [2021-11-07 08:18:03,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 91 transitions, 186 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-07 08:18:03,014 INFO L242 Difference]: Finished difference. Result has 92 places, 88 transitions, 180 flow [2021-11-07 08:18:03,016 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=180, PETRI_PLACES=92, PETRI_TRANSITIONS=88} [2021-11-07 08:18:03,017 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, -3 predicate places. [2021-11-07 08:18:03,018 INFO L470 AbstractCegarLoop]: Abstraction has has 92 places, 88 transitions, 180 flow [2021-11-07 08:18:03,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 101.5) internal successors, (203), 2 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,018 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:18:03,019 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] [2021-11-07 08:18:03,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:18:03,019 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:18:03,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:03,020 INFO L85 PathProgramCache]: Analyzing trace with hash -217759083, now seen corresponding path program 1 times [2021-11-07 08:18:03,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:03,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383146373] [2021-11-07 08:18:03,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:03,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:03,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:03,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:03,409 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383146373] [2021-11-07 08:18:03,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383146373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:18:03,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:18:03,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 08:18:03,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215994301] [2021-11-07 08:18:03,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:18:03,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:03,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:18:03,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:18:03,415 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 107 [2021-11-07 08:18:03,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 88 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:18:03,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 107 [2021-11-07 08:18:03,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:18:03,498 INFO L129 PetriNetUnfolder]: 16/150 cut-off events. [2021-11-07 08:18:03,498 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 08:18:03,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 195 conditions, 150 events. 16/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 333 event pairs, 1 based on Foata normal form. 1/141 useless extension candidates. Maximal degree in co-relation 192. Up to 25 conditions per place. [2021-11-07 08:18:03,501 INFO L132 encePairwiseOnDemand]: 101/107 looper letters, 18 selfloop transitions, 3 changer transitions 3/95 dead transitions. [2021-11-07 08:18:03,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 242 flow [2021-11-07 08:18:03,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:18:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-07 08:18:03,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 425 transitions. [2021-11-07 08:18:03,505 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.794392523364486 [2021-11-07 08:18:03,505 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 425 transitions. [2021-11-07 08:18:03,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 425 transitions. [2021-11-07 08:18:03,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:18:03,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 425 transitions. [2021-11-07 08:18:03,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,513 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,513 INFO L186 Difference]: Start difference. First operand has 92 places, 88 transitions, 180 flow. Second operand 5 states and 425 transitions. [2021-11-07 08:18:03,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 242 flow [2021-11-07 08:18:03,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 242 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-07 08:18:03,518 INFO L242 Difference]: Finished difference. Result has 96 places, 90 transitions, 203 flow [2021-11-07 08:18:03,518 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2021-11-07 08:18:03,519 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 1 predicate places. [2021-11-07 08:18:03,519 INFO L470 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 203 flow [2021-11-07 08:18:03,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,520 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:18:03,520 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] [2021-11-07 08:18:03,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:18:03,520 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:18:03,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:03,521 INFO L85 PathProgramCache]: Analyzing trace with hash -10646151, now seen corresponding path program 1 times [2021-11-07 08:18:03,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:03,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134825544] [2021-11-07 08:18:03,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:03,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:03,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:03,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:03,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134825544] [2021-11-07 08:18:03,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134825544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:18:03,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:18:03,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:18:03,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369508752] [2021-11-07 08:18:03,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:18:03,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:03,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:18:03,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:18:03,744 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2021-11-07 08:18:03,746 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 203 flow. Second operand has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,746 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:18:03,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2021-11-07 08:18:03,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:18:03,977 INFO L129 PetriNetUnfolder]: 54/293 cut-off events. [2021-11-07 08:18:03,977 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-07 08:18:03,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 293 events. 54/293 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1213 event pairs, 18 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 439. Up to 85 conditions per place. [2021-11-07 08:18:03,983 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 27 selfloop transitions, 8 changer transitions 0/102 dead transitions. [2021-11-07 08:18:03,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 102 transitions, 298 flow [2021-11-07 08:18:03,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:18:03,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-07 08:18:03,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 652 transitions. [2021-11-07 08:18:03,988 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616822429906542 [2021-11-07 08:18:03,988 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 652 transitions. [2021-11-07 08:18:03,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 652 transitions. [2021-11-07 08:18:03,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:18:03,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 652 transitions. [2021-11-07 08:18:03,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.5) internal successors, (652), 8 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,999 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:03,999 INFO L186 Difference]: Start difference. First operand has 96 places, 90 transitions, 203 flow. Second operand 8 states and 652 transitions. [2021-11-07 08:18:03,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 102 transitions, 298 flow [2021-11-07 08:18:04,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 102 transitions, 291 flow, removed 2 selfloop flow, removed 3 redundant places. [2021-11-07 08:18:04,009 INFO L242 Difference]: Finished difference. Result has 101 places, 93 transitions, 232 flow [2021-11-07 08:18:04,009 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=232, PETRI_PLACES=101, PETRI_TRANSITIONS=93} [2021-11-07 08:18:04,009 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 6 predicate places. [2021-11-07 08:18:04,010 INFO L470 AbstractCegarLoop]: Abstraction has has 101 places, 93 transitions, 232 flow [2021-11-07 08:18:04,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:04,011 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:18:04,011 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] [2021-11-07 08:18:04,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:18:04,012 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:18:04,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash -111979999, now seen corresponding path program 1 times [2021-11-07 08:18:04,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:04,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460695032] [2021-11-07 08:18:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:04,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:04,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:04,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:04,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:04,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460695032] [2021-11-07 08:18:04,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460695032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:18:04,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:18:04,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 08:18:04,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784677341] [2021-11-07 08:18:04,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:18:04,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:04,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:18:04,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:18:04,199 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2021-11-07 08:18:04,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 93 transitions, 232 flow. Second operand has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:04,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:18:04,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2021-11-07 08:18:04,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:18:04,339 INFO L129 PetriNetUnfolder]: 53/252 cut-off events. [2021-11-07 08:18:04,339 INFO L130 PetriNetUnfolder]: For 30/33 co-relation queries the response was YES. [2021-11-07 08:18:04,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 432 conditions, 252 events. 53/252 cut-off events. For 30/33 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 830 event pairs, 25 based on Foata normal form. 3/237 useless extension candidates. Maximal degree in co-relation 424. Up to 93 conditions per place. [2021-11-07 08:18:04,342 INFO L132 encePairwiseOnDemand]: 98/107 looper letters, 21 selfloop transitions, 6 changer transitions 7/101 dead transitions. [2021-11-07 08:18:04,343 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 101 transitions, 315 flow [2021-11-07 08:18:04,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:18:04,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-07 08:18:04,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 650 transitions. [2021-11-07 08:18:04,346 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593457943925234 [2021-11-07 08:18:04,346 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 650 transitions. [2021-11-07 08:18:04,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 650 transitions. [2021-11-07 08:18:04,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:18:04,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 650 transitions. [2021-11-07 08:18:04,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.25) internal successors, (650), 8 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:04,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:04,354 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:04,354 INFO L186 Difference]: Start difference. First operand has 101 places, 93 transitions, 232 flow. Second operand 8 states and 650 transitions. [2021-11-07 08:18:04,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 101 transitions, 315 flow [2021-11-07 08:18:04,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 101 transitions, 305 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-07 08:18:04,359 INFO L242 Difference]: Finished difference. Result has 106 places, 91 transitions, 226 flow [2021-11-07 08:18:04,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=226, PETRI_PLACES=106, PETRI_TRANSITIONS=91} [2021-11-07 08:18:04,360 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 11 predicate places. [2021-11-07 08:18:04,360 INFO L470 AbstractCegarLoop]: Abstraction has has 106 places, 91 transitions, 226 flow [2021-11-07 08:18:04,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:04,361 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:18:04,361 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] [2021-11-07 08:18:04,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:18:04,362 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:18:04,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:04,362 INFO L85 PathProgramCache]: Analyzing trace with hash 2094660162, now seen corresponding path program 1 times [2021-11-07 08:18:04,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:04,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84879544] [2021-11-07 08:18:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:04,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:18:04,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:04,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84879544] [2021-11-07 08:18:04,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84879544] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:04,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350032875] [2021-11-07 08:18:04,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:04,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:04,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:18:04,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:18:04,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:18:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:04,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:18:04,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:18:05,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:18:05,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350032875] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:05,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:18:05,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-11-07 08:18:05,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644683603] [2021-11-07 08:18:05,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:18:05,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:05,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:18:05,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:18:05,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2021-11-07 08:18:05,057 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 91 transitions, 226 flow. Second operand has 10 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:05,057 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:18:05,057 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2021-11-07 08:18:05,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:18:05,236 INFO L129 PetriNetUnfolder]: 51/215 cut-off events. [2021-11-07 08:18:05,236 INFO L130 PetriNetUnfolder]: For 38/38 co-relation queries the response was YES. [2021-11-07 08:18:05,237 INFO L84 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 215 events. 51/215 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 651 event pairs, 14 based on Foata normal form. 5/214 useless extension candidates. Maximal degree in co-relation 396. Up to 63 conditions per place. [2021-11-07 08:18:05,238 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 26 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2021-11-07 08:18:05,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 100 transitions, 314 flow [2021-11-07 08:18:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:18:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-07 08:18:05,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 650 transitions. [2021-11-07 08:18:05,242 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593457943925234 [2021-11-07 08:18:05,242 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 650 transitions. [2021-11-07 08:18:05,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 650 transitions. [2021-11-07 08:18:05,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:18:05,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 650 transitions. [2021-11-07 08:18:05,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.25) internal successors, (650), 8 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:05,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:05,248 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:05,248 INFO L186 Difference]: Start difference. First operand has 106 places, 91 transitions, 226 flow. Second operand 8 states and 650 transitions. [2021-11-07 08:18:05,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 100 transitions, 314 flow [2021-11-07 08:18:05,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 100 transitions, 288 flow, removed 7 selfloop flow, removed 9 redundant places. [2021-11-07 08:18:05,256 INFO L242 Difference]: Finished difference. Result has 102 places, 93 transitions, 232 flow [2021-11-07 08:18:05,256 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=232, PETRI_PLACES=102, PETRI_TRANSITIONS=93} [2021-11-07 08:18:05,257 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 7 predicate places. [2021-11-07 08:18:05,257 INFO L470 AbstractCegarLoop]: Abstraction has has 102 places, 93 transitions, 232 flow [2021-11-07 08:18:05,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:05,258 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:18:05,258 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] [2021-11-07 08:18:05,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:18:05,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:05,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:18:05,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash 2062921702, now seen corresponding path program 1 times [2021-11-07 08:18:05,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:05,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409517094] [2021-11-07 08:18:05,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:05,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:18:05,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:05,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409517094] [2021-11-07 08:18:05,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409517094] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:05,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240309335] [2021-11-07 08:18:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:05,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:05,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:18:05,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:18:05,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:18:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:05,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:18:05,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:18:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:18:05,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240309335] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:05,962 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:18:05,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-11-07 08:18:05,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865791327] [2021-11-07 08:18:05,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 08:18:05,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 08:18:05,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:18:05,968 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 107 [2021-11-07 08:18:05,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 93 transitions, 232 flow. Second operand has 10 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:05,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:18:05,970 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 107 [2021-11-07 08:18:05,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:18:06,116 INFO L129 PetriNetUnfolder]: 51/226 cut-off events. [2021-11-07 08:18:06,117 INFO L130 PetriNetUnfolder]: For 27/31 co-relation queries the response was YES. [2021-11-07 08:18:06,118 INFO L84 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 226 events. 51/226 cut-off events. For 27/31 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 758 event pairs, 19 based on Foata normal form. 4/199 useless extension candidates. Maximal degree in co-relation 387. Up to 59 conditions per place. [2021-11-07 08:18:06,120 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 26 selfloop transitions, 7 changer transitions 0/101 dead transitions. [2021-11-07 08:18:06,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 101 transitions, 316 flow [2021-11-07 08:18:06,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:18:06,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-07 08:18:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 650 transitions. [2021-11-07 08:18:06,124 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593457943925234 [2021-11-07 08:18:06,124 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 650 transitions. [2021-11-07 08:18:06,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 650 transitions. [2021-11-07 08:18:06,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:18:06,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 650 transitions. [2021-11-07 08:18:06,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.25) internal successors, (650), 8 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:06,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:06,133 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 107.0) internal successors, (963), 9 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:06,133 INFO L186 Difference]: Start difference. First operand has 102 places, 93 transitions, 232 flow. Second operand 8 states and 650 transitions. [2021-11-07 08:18:06,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 101 transitions, 316 flow [2021-11-07 08:18:06,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 101 transitions, 306 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-11-07 08:18:06,138 INFO L242 Difference]: Finished difference. Result has 105 places, 94 transitions, 244 flow [2021-11-07 08:18:06,139 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=244, PETRI_PLACES=105, PETRI_TRANSITIONS=94} [2021-11-07 08:18:06,139 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 10 predicate places. [2021-11-07 08:18:06,142 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 94 transitions, 244 flow [2021-11-07 08:18:06,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 79.5) internal successors, (795), 10 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:06,145 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:18:06,145 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] [2021-11-07 08:18:06,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:18:06,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:06,359 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:18:06,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:06,359 INFO L85 PathProgramCache]: Analyzing trace with hash -47475924, now seen corresponding path program 1 times [2021-11-07 08:18:06,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:06,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392418601] [2021-11-07 08:18:06,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:06,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:06,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:18:06,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:06,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392418601] [2021-11-07 08:18:06,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392418601] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:06,875 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465747337] [2021-11-07 08:18:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:06,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:06,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:18:06,877 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:18:06,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:18:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:07,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-07 08:18:07,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:18:07,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 08:18:07,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-07 08:18:07,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-07 08:18:08,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:08,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465747337] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:08,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:18:08,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 29 [2021-11-07 08:18:08,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885917237] [2021-11-07 08:18:08,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-07 08:18:08,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-07 08:18:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=725, Unknown=0, NotChecked=0, Total=812 [2021-11-07 08:18:08,059 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 107 [2021-11-07 08:18:08,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 94 transitions, 244 flow. Second operand has 29 states, 29 states have (on average 39.310344827586206) internal successors, (1140), 29 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:08,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:18:08,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 107 [2021-11-07 08:18:08,063 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:18:09,787 INFO L129 PetriNetUnfolder]: 991/2039 cut-off events. [2021-11-07 08:18:09,787 INFO L130 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2021-11-07 08:18:09,793 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4493 conditions, 2039 events. 991/2039 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 13186 event pairs, 299 based on Foata normal form. 2/2022 useless extension candidates. Maximal degree in co-relation 4484. Up to 814 conditions per place. [2021-11-07 08:18:09,807 INFO L132 encePairwiseOnDemand]: 84/107 looper letters, 157 selfloop transitions, 60 changer transitions 6/254 dead transitions. [2021-11-07 08:18:09,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 254 transitions, 1131 flow [2021-11-07 08:18:09,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-07 08:18:09,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-07 08:18:09,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 1483 transitions. [2021-11-07 08:18:09,817 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3959946595460614 [2021-11-07 08:18:09,817 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 1483 transitions. [2021-11-07 08:18:09,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 1483 transitions. [2021-11-07 08:18:09,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:18:09,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 1483 transitions. [2021-11-07 08:18:09,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 42.371428571428574) internal successors, (1483), 35 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:09,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 107.0) internal successors, (3852), 36 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:09,834 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 107.0) internal successors, (3852), 36 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:09,834 INFO L186 Difference]: Start difference. First operand has 105 places, 94 transitions, 244 flow. Second operand 35 states and 1483 transitions. [2021-11-07 08:18:09,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 254 transitions, 1131 flow [2021-11-07 08:18:09,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 254 transitions, 1111 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-11-07 08:18:09,843 INFO L242 Difference]: Finished difference. Result has 146 places, 148 transitions, 627 flow [2021-11-07 08:18:09,844 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=627, PETRI_PLACES=146, PETRI_TRANSITIONS=148} [2021-11-07 08:18:09,844 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 51 predicate places. [2021-11-07 08:18:09,844 INFO L470 AbstractCegarLoop]: Abstraction has has 146 places, 148 transitions, 627 flow [2021-11-07 08:18:09,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 39.310344827586206) internal successors, (1140), 29 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:09,845 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:18:09,845 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] [2021-11-07 08:18:09,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:18:10,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:10,071 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:18:10,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:10,071 INFO L85 PathProgramCache]: Analyzing trace with hash 725496300, now seen corresponding path program 2 times [2021-11-07 08:18:10,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:10,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125167562] [2021-11-07 08:18:10,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:10,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:10,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:18:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:18:10,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:18:10,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125167562] [2021-11-07 08:18:10,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125167562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:10,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502540819] [2021-11-07 08:18:10,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:18:10,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:18:10,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:18:10,534 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:18:10,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 08:18:10,759 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:18:10,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:18:10,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-07 08:18:10,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:18:11,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 08:18:11,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-11-07 08:18:11,802 INFO L354 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2021-11-07 08:18:11,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 23 [2021-11-07 08:18:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:18:12,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502540819] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:18:12,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:18:12,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 20] total 32 [2021-11-07 08:18:12,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138977628] [2021-11-07 08:18:12,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 08:18:12,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:18:12,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 08:18:12,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2021-11-07 08:18:12,075 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 107 [2021-11-07 08:18:12,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 148 transitions, 627 flow. Second operand has 32 states, 32 states have (on average 37.9375) internal successors, (1214), 32 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:12,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:18:12,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 107 [2021-11-07 08:18:12,078 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:18:14,645 INFO L129 PetriNetUnfolder]: 1716/3551 cut-off events. [2021-11-07 08:18:14,645 INFO L130 PetriNetUnfolder]: For 3831/3831 co-relation queries the response was YES. [2021-11-07 08:18:14,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9619 conditions, 3551 events. 1716/3551 cut-off events. For 3831/3831 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 27488 event pairs, 203 based on Foata normal form. 2/3532 useless extension candidates. Maximal degree in co-relation 9597. Up to 796 conditions per place. [2021-11-07 08:18:14,685 INFO L132 encePairwiseOnDemand]: 84/107 looper letters, 234 selfloop transitions, 128 changer transitions 6/398 dead transitions. [2021-11-07 08:18:14,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 398 transitions, 2408 flow [2021-11-07 08:18:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-07 08:18:14,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-11-07 08:18:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 1914 transitions. [2021-11-07 08:18:14,696 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.38886631450629827 [2021-11-07 08:18:14,696 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 1914 transitions. [2021-11-07 08:18:14,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 1914 transitions. [2021-11-07 08:18:14,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:18:14,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 1914 transitions. [2021-11-07 08:18:14,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 41.608695652173914) internal successors, (1914), 46 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:14,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 107.0) internal successors, (5029), 47 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:14,719 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 107.0) internal successors, (5029), 47 states have internal predecessors, (5029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:14,720 INFO L186 Difference]: Start difference. First operand has 146 places, 148 transitions, 627 flow. Second operand 46 states and 1914 transitions. [2021-11-07 08:18:14,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 398 transitions, 2408 flow [2021-11-07 08:18:14,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 398 transitions, 2237 flow, removed 71 selfloop flow, removed 14 redundant places. [2021-11-07 08:18:14,754 INFO L242 Difference]: Finished difference. Result has 185 places, 231 transitions, 1425 flow [2021-11-07 08:18:14,755 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=1425, PETRI_PLACES=185, PETRI_TRANSITIONS=231} [2021-11-07 08:18:14,755 INFO L334 CegarLoopForPetriNet]: 95 programPoint places, 90 predicate places. [2021-11-07 08:18:14,755 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 231 transitions, 1425 flow [2021-11-07 08:18:14,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 37.9375) internal successors, (1214), 32 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:18:14,756 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:18:14,756 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] [2021-11-07 08:18:14,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:18:14,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 08:18:14,971 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:18:14,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:18:14,971 INFO L85 PathProgramCache]: Analyzing trace with hash 174204838, now seen corresponding path program 3 times [2021-11-07 08:18:14,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:18:14,971 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463024059] [2021-11-07 08:18:14,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:18:14,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:18:15,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:18:15,040 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:18:15,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:18:15,138 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:18:15,139 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 08:18:15,140 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:18:15,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 08:18:15,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 08:18:15,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 08:18:15,146 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2021-11-07 08:18:15,153 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 08:18:15,153 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:18:15,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:18:15 BasicIcfg [2021-11-07 08:18:15,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:18:15,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:18:15,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:18:15,282 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:18:15,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:18:02" (3/4) ... [2021-11-07 08:18:15,284 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 08:18:15,415 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_990e7265-8e28-44eb-84de-95932a016cf5/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 08:18:15,415 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:18:15,416 INFO L168 Benchmark]: Toolchain (without parser) took 14253.02 ms. Allocated memory was 109.1 MB in the beginning and 205.5 MB in the end (delta: 96.5 MB). Free memory was 77.5 MB in the beginning and 126.3 MB in the end (delta: -48.8 MB). Peak memory consumption was 127.0 MB. Max. memory is 16.1 GB. [2021-11-07 08:18:15,417 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory is still 63.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:18:15,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.52 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 77.2 MB in the beginning and 107.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:18:15,418 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.72 ms. Allocated memory is still 134.2 MB. Free memory was 107.3 MB in the beginning and 105.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:18:15,418 INFO L168 Benchmark]: Boogie Preprocessor took 32.47 ms. Allocated memory is still 134.2 MB. Free memory was 105.8 MB in the beginning and 104.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:18:15,419 INFO L168 Benchmark]: RCFGBuilder took 761.69 ms. Allocated memory is still 134.2 MB. Free memory was 104.4 MB in the beginning and 81.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:18:15,419 INFO L168 Benchmark]: TraceAbstraction took 12970.91 ms. Allocated memory was 134.2 MB in the beginning and 205.5 MB in the end (delta: 71.3 MB). Free memory was 80.7 MB in the beginning and 60.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 93.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:18:15,420 INFO L168 Benchmark]: Witness Printer took 133.69 ms. Allocated memory is still 205.5 MB. Free memory was 60.3 MB in the beginning and 126.3 MB in the end (delta: -66.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. [2021-11-07 08:18:15,422 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 109.1 MB. Free memory is still 63.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 295.52 ms. Allocated memory was 109.1 MB in the beginning and 134.2 MB in the end (delta: 25.2 MB). Free memory was 77.2 MB in the beginning and 107.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.72 ms. Allocated memory is still 134.2 MB. Free memory was 107.3 MB in the beginning and 105.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.47 ms. Allocated memory is still 134.2 MB. Free memory was 105.8 MB in the beginning and 104.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 761.69 ms. Allocated memory is still 134.2 MB. Free memory was 104.4 MB in the beginning and 81.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12970.91 ms. Allocated memory was 134.2 MB in the beginning and 205.5 MB in the end (delta: 71.3 MB). Free memory was 80.7 MB in the beginning and 60.3 MB in the end (delta: 20.3 MB). Peak memory consumption was 93.3 MB. Max. memory is 16.1 GB. * Witness Printer took 133.69 ms. Allocated memory is still 205.5 MB. Free memory was 60.3 MB in the beginning and 126.3 MB in the end (delta: -66.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 87]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L41] 0 int* A; VAL [A={0:0}] [L42] 0 int counter, N; VAL [A={0:0}, counter=0, N=0] [L75] 0 pthread_t t1, t2; VAL [A={0:0}, counter=0, N=0] [L77] 0 N = __VERIFIER_nondet_int() VAL [A={0:0}, counter=0, N=1] [L38] COND FALSE 0 !(!cond) VAL [A={0:0}, counter=0, N=1] [L38] COND FALSE 0 !(!cond) VAL [A={0:0}, counter=0, N=1] [L96] 0 int* arr = (int*)malloc(sizeof(int) * (size_t)size); VAL [A={0:0}, counter=0, N=1] [L97] 0 int i = 0; VAL [A={0:0}, counter=0, N=1] [L97] COND TRUE 0 i < size VAL [A={0:0}, counter=0, N=1] [L98] 0 arr[i] = __VERIFIER_nondet_int() VAL [A={0:0}, counter=0, N=1] [L97] 0 i++ VAL [A={0:0}, counter=0, N=1] [L97] COND FALSE 0 !(i < size) VAL [A={0:0}, counter=0, N=1] [L100] 0 return arr; VAL [A={0:0}, counter=0, N=1] [L78] 0 A = create_fresh_int_array(N) VAL [A={-3:0}, counter=0, N=1] [L81] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [A={-3:0}, counter=0, N=1] [L49] 1 int i=0; VAL [A={-3:0}, counter=0, N=1] [L49] COND TRUE 1 i