./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8 --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 c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:51:21,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:51:21,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:51:21,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:51:21,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:51:21,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:51:21,724 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:51:21,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:51:21,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:51:21,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:51:21,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:51:21,739 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:51:21,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:51:21,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:51:21,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:51:21,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:51:21,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:51:21,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:51:21,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:51:21,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:51:21,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:51:21,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:51:21,764 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:51:21,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:51:21,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:51:21,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:51:21,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:51:21,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:51:21,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:51:21,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:51:21,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:51:21,781 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:51:21,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:51:21,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:51:21,785 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:51:21,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:51:21,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:51:21,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:51:21,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:51:21,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:51:21,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:51:21,790 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:51:21,827 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:51:21,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:51:21,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:51:21,828 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:51:21,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:51:21,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:51:21,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:51:21,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:51:21,831 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:51:21,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:51:21,833 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:51:21,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:51:21,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:51:21,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:51:21,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:51:21,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:51:21,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:51:21,835 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:51:21,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:51:21,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:51:21,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:51:21,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:51:21,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:51:21,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:51:21,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:51:21,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:51:21,838 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:51:21,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:51:21,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:51:21,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:51:21,839 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:51:21,839 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:51:21,840 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:51:21,840 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_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 [2022-11-16 11:51:22,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:51:22,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:51:22,142 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:51:22,143 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:51:22,144 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:51:22,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2022-11-16 11:51:22,219 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/data/2c1bb38ef/56cbf94b93914d279d94dd885a4ff5b6/FLAGeadf911b8 [2022-11-16 11:51:22,638 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:51:22,639 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2022-11-16 11:51:22,646 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/data/2c1bb38ef/56cbf94b93914d279d94dd885a4ff5b6/FLAGeadf911b8 [2022-11-16 11:51:23,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/data/2c1bb38ef/56cbf94b93914d279d94dd885a4ff5b6 [2022-11-16 11:51:23,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:51:23,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:51:23,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:51:23,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:51:23,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:51:23,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26518274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23, skipping insertion in model container [2022-11-16 11:51:23,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:51:23,091 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:51:23,298 WARN L229 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_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-11-16 11:51:23,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:51:23,310 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:51:23,330 WARN L229 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_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-11-16 11:51:23,331 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:51:23,345 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:51:23,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23 WrapperNode [2022-11-16 11:51:23,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:51:23,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:51:23,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:51:23,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:51:23,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,386 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-11-16 11:51:23,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:51:23,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:51:23,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:51:23,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:51:23,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,422 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:51:23,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:51:23,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:51:23,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:51:23,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (1/1) ... [2022-11-16 11:51:23,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:51:23,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:23,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:51:23,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:51:23,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:51:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:51:23,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:51:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:51:23,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:51:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:51:23,512 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:51:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:51:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:51:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:51:23,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:51:23,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:51:23,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:51:23,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:51:23,515 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:51:23,604 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:51:23,606 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:51:23,818 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:51:23,859 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:51:23,860 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:51:23,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:51:23 BoogieIcfgContainer [2022-11-16 11:51:23,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:51:23,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:51:23,864 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:51:23,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:51:23,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:51:23" (1/3) ... [2022-11-16 11:51:23,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166c346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:51:23, skipping insertion in model container [2022-11-16 11:51:23,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:51:23" (2/3) ... [2022-11-16 11:51:23,870 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@166c346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:51:23, skipping insertion in model container [2022-11-16 11:51:23,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:51:23" (3/3) ... [2022-11-16 11:51:23,872 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-11-16 11:51:23,880 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:51:23,890 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:51:23,891 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:51:23,891 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:51:24,027 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:51:24,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 224 flow [2022-11-16 11:51:24,128 INFO L130 PetriNetUnfolder]: 8/102 cut-off events. [2022-11-16 11:51:24,128 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:51:24,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 8/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-11-16 11:51:24,133 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 104 transitions, 224 flow [2022-11-16 11:51:24,138 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 198 flow [2022-11-16 11:51:24,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:51:24,161 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6ad91d19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:51:24,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-16 11:51:24,206 INFO L130 PetriNetUnfolder]: 8/92 cut-off events. [2022-11-16 11:51:24,207 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:51:24,207 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:24,208 INFO L209 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] [2022-11-16 11:51:24,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:24,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash -482247264, now seen corresponding path program 1 times [2022-11-16 11:51:24,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:24,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120639272] [2022-11-16 11:51:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:24,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:24,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:24,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:24,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120639272] [2022-11-16 11:51:24,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120639272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:24,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:24,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:51:24,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397839022] [2022-11-16 11:51:24,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:24,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 11:51:24,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:24,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 11:51:24,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 11:51:24,600 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 104 [2022-11-16 11:51:24,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 198 flow. Second operand has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:24,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 104 [2022-11-16 11:51:24,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:24,655 INFO L130 PetriNetUnfolder]: 7/96 cut-off events. [2022-11-16 11:51:24,655 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-16 11:51:24,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 96 events. 7/96 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 1 based on Foata normal form. 7/96 useless extension candidates. Maximal degree in co-relation 65. Up to 10 conditions per place. [2022-11-16 11:51:24,658 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 6 selfloop transitions, 0 changer transitions 2/89 dead transitions. [2022-11-16 11:51:24,658 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 202 flow [2022-11-16 11:51:24,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 11:51:24,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-16 11:51:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2022-11-16 11:51:24,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9423076923076923 [2022-11-16 11:51:24,673 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2022-11-16 11:51:24,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2022-11-16 11:51:24,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:24,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2022-11-16 11:51:24,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,686 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,688 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 198 flow. Second operand 2 states and 196 transitions. [2022-11-16 11:51:24,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 202 flow [2022-11-16 11:51:24,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 194 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:51:24,696 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 178 flow [2022-11-16 11:51:24,698 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=178, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2022-11-16 11:51:24,702 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, -3 predicate places. [2022-11-16 11:51:24,702 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 178 flow [2022-11-16 11:51:24,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:24,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:24,703 INFO L209 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] [2022-11-16 11:51:24,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:51:24,704 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:24,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:24,705 INFO L85 PathProgramCache]: Analyzing trace with hash 988484508, now seen corresponding path program 1 times [2022-11-16 11:51:24,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:24,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950975202] [2022-11-16 11:51:24,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:24,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:25,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:25,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:25,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950975202] [2022-11-16 11:51:25,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950975202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:25,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:25,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:51:25,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962545941] [2022-11-16 11:51:25,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:25,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:51:25,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:25,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:51:25,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:51:25,468 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-16 11:51:25,469 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:25,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:25,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-16 11:51:25,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:25,632 INFO L130 PetriNetUnfolder]: 21/139 cut-off events. [2022-11-16 11:51:25,633 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-16 11:51:25,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 139 events. 21/139 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 227 event pairs, 0 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 184. Up to 31 conditions per place. [2022-11-16 11:51:25,635 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 15 selfloop transitions, 9 changer transitions 4/97 dead transitions. [2022-11-16 11:51:25,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 97 transitions, 257 flow [2022-11-16 11:51:25,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:51:25,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:51:25,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2022-11-16 11:51:25,640 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7994505494505495 [2022-11-16 11:51:25,640 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2022-11-16 11:51:25,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2022-11-16 11:51:25,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:25,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2022-11-16 11:51:25,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:25,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:25,648 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:25,649 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 178 flow. Second operand 7 states and 582 transitions. [2022-11-16 11:51:25,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 97 transitions, 257 flow [2022-11-16 11:51:25,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 257 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:51:25,652 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 225 flow [2022-11-16 11:51:25,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2022-11-16 11:51:25,653 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 4 predicate places. [2022-11-16 11:51:25,653 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 225 flow [2022-11-16 11:51:25,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:25,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:25,654 INFO L209 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] [2022-11-16 11:51:25,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:51:25,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:25,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:25,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1851829749, now seen corresponding path program 1 times [2022-11-16 11:51:25,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:25,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996502248] [2022-11-16 11:51:25,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:25,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:25,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:25,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996502248] [2022-11-16 11:51:25,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996502248] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:25,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691741091] [2022-11-16 11:51:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:25,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:25,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:25,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:25,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:51:26,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:26,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:51:26,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:26,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:26,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691741091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:26,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:26,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-16 11:51:26,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457266391] [2022-11-16 11:51:26,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:26,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:51:26,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:26,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:51:26,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:51:26,866 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-16 11:51:26,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 225 flow. Second operand has 13 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:26,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:26,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-16 11:51:26,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:27,411 INFO L130 PetriNetUnfolder]: 116/418 cut-off events. [2022-11-16 11:51:27,412 INFO L131 PetriNetUnfolder]: For 55/62 co-relation queries the response was YES. [2022-11-16 11:51:27,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 418 events. 116/418 cut-off events. For 55/62 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2016 event pairs, 7 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 732. Up to 66 conditions per place. [2022-11-16 11:51:27,416 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 57 selfloop transitions, 14 changer transitions 1/133 dead transitions. [2022-11-16 11:51:27,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 133 transitions, 480 flow [2022-11-16 11:51:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:51:27,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:51:27,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 763 transitions. [2022-11-16 11:51:27,420 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7336538461538461 [2022-11-16 11:51:27,420 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 763 transitions. [2022-11-16 11:51:27,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 763 transitions. [2022-11-16 11:51:27,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:27,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 763 transitions. [2022-11-16 11:51:27,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.3) internal successors, (763), 10 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:27,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:27,428 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:27,428 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 225 flow. Second operand 10 states and 763 transitions. [2022-11-16 11:51:27,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 133 transitions, 480 flow [2022-11-16 11:51:27,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 133 transitions, 461 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-16 11:51:27,433 INFO L231 Difference]: Finished difference. Result has 103 places, 99 transitions, 290 flow [2022-11-16 11:51:27,434 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=103, PETRI_TRANSITIONS=99} [2022-11-16 11:51:27,434 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 11 predicate places. [2022-11-16 11:51:27,435 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 99 transitions, 290 flow [2022-11-16 11:51:27,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:27,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:27,436 INFO L209 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] [2022-11-16 11:51:27,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:27,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:27,641 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:27,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:27,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1177187226, now seen corresponding path program 1 times [2022-11-16 11:51:27,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:27,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254978720] [2022-11-16 11:51:27,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:27,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:27,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:27,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:27,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254978720] [2022-11-16 11:51:27,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254978720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:27,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:27,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:51:27,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849088296] [2022-11-16 11:51:27,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:27,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:51:27,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:27,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:51:27,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:51:27,889 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-16 11:51:27,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 99 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:27,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:27,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-16 11:51:27,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:28,165 INFO L130 PetriNetUnfolder]: 111/410 cut-off events. [2022-11-16 11:51:28,165 INFO L131 PetriNetUnfolder]: For 222/226 co-relation queries the response was YES. [2022-11-16 11:51:28,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 410 events. 111/410 cut-off events. For 222/226 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1914 event pairs, 12 based on Foata normal form. 2/381 useless extension candidates. Maximal degree in co-relation 865. Up to 120 conditions per place. [2022-11-16 11:51:28,170 INFO L137 encePairwiseOnDemand]: 91/104 looper letters, 47 selfloop transitions, 14 changer transitions 6/128 dead transitions. [2022-11-16 11:51:28,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 128 transitions, 543 flow [2022-11-16 11:51:28,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:51:28,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:51:28,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2022-11-16 11:51:28,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7417582417582418 [2022-11-16 11:51:28,173 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2022-11-16 11:51:28,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2022-11-16 11:51:28,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:28,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2022-11-16 11:51:28,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,178 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,178 INFO L175 Difference]: Start difference. First operand has 103 places, 99 transitions, 290 flow. Second operand 7 states and 540 transitions. [2022-11-16 11:51:28,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 128 transitions, 543 flow [2022-11-16 11:51:28,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 128 transitions, 537 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:51:28,183 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 356 flow [2022-11-16 11:51:28,184 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2022-11-16 11:51:28,184 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 17 predicate places. [2022-11-16 11:51:28,185 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 356 flow [2022-11-16 11:51:28,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:28,186 INFO L209 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] [2022-11-16 11:51:28,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:51:28,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:28,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:28,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1158071161, now seen corresponding path program 2 times [2022-11-16 11:51:28,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:28,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410926342] [2022-11-16 11:51:28,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:28,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:28,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:28,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410926342] [2022-11-16 11:51:28,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410926342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:28,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:28,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 11:51:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226179785] [2022-11-16 11:51:28,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:28,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:51:28,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:28,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:51:28,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:51:28,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-16 11:51:28,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:28,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-16 11:51:28,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:28,659 INFO L130 PetriNetUnfolder]: 107/379 cut-off events. [2022-11-16 11:51:28,659 INFO L131 PetriNetUnfolder]: For 347/351 co-relation queries the response was YES. [2022-11-16 11:51:28,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 379 events. 107/379 cut-off events. For 347/351 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1745 event pairs, 9 based on Foata normal form. 1/356 useless extension candidates. Maximal degree in co-relation 866. Up to 101 conditions per place. [2022-11-16 11:51:28,664 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 43 selfloop transitions, 14 changer transitions 3/121 dead transitions. [2022-11-16 11:51:28,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 553 flow [2022-11-16 11:51:28,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:51:28,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:51:28,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 532 transitions. [2022-11-16 11:51:28,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2022-11-16 11:51:28,667 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 532 transitions. [2022-11-16 11:51:28,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 532 transitions. [2022-11-16 11:51:28,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:28,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 532 transitions. [2022-11-16 11:51:28,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,673 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,673 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 356 flow. Second operand 7 states and 532 transitions. [2022-11-16 11:51:28,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 553 flow [2022-11-16 11:51:28,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 121 transitions, 545 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 11:51:28,683 INFO L231 Difference]: Finished difference. Result has 115 places, 105 transitions, 404 flow [2022-11-16 11:51:28,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=404, PETRI_PLACES=115, PETRI_TRANSITIONS=105} [2022-11-16 11:51:28,687 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 23 predicate places. [2022-11-16 11:51:28,688 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 105 transitions, 404 flow [2022-11-16 11:51:28,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:28,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:28,689 INFO L209 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] [2022-11-16 11:51:28,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:51:28,689 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:28,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:28,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1156094028, now seen corresponding path program 2 times [2022-11-16 11:51:28,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:28,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353090938] [2022-11-16 11:51:28,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:28,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:28,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:28,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353090938] [2022-11-16 11:51:28,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353090938] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:28,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151746027] [2022-11-16 11:51:28,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:51:28,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:28,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:28,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:29,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:51:29,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:51:29,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:51:29,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:51:29,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:29,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:29,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:29,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151746027] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:29,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:29,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-16 11:51:29,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404222480] [2022-11-16 11:51:29,647 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:29,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:51:29,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:29,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:51:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:51:29,650 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-16 11:51:29,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 105 transitions, 404 flow. Second operand has 13 states, 13 states have (on average 72.15384615384616) internal successors, (938), 13 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:29,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:29,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-16 11:51:29,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:30,116 INFO L130 PetriNetUnfolder]: 125/419 cut-off events. [2022-11-16 11:51:30,116 INFO L131 PetriNetUnfolder]: For 632/632 co-relation queries the response was YES. [2022-11-16 11:51:30,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047 conditions, 419 events. 125/419 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1879 event pairs, 17 based on Foata normal form. 4/388 useless extension candidates. Maximal degree in co-relation 1031. Up to 79 conditions per place. [2022-11-16 11:51:30,121 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 57 selfloop transitions, 17 changer transitions 0/135 dead transitions. [2022-11-16 11:51:30,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 135 transitions, 709 flow [2022-11-16 11:51:30,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:51:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:51:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 749 transitions. [2022-11-16 11:51:30,124 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7201923076923077 [2022-11-16 11:51:30,124 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 749 transitions. [2022-11-16 11:51:30,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 749 transitions. [2022-11-16 11:51:30,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:30,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 749 transitions. [2022-11-16 11:51:30,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:30,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:30,130 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:30,130 INFO L175 Difference]: Start difference. First operand has 115 places, 105 transitions, 404 flow. Second operand 10 states and 749 transitions. [2022-11-16 11:51:30,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 135 transitions, 709 flow [2022-11-16 11:51:30,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 135 transitions, 683 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-16 11:51:30,137 INFO L231 Difference]: Finished difference. Result has 123 places, 111 transitions, 482 flow [2022-11-16 11:51:30,137 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=482, PETRI_PLACES=123, PETRI_TRANSITIONS=111} [2022-11-16 11:51:30,138 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 31 predicate places. [2022-11-16 11:51:30,138 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 111 transitions, 482 flow [2022-11-16 11:51:30,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 72.15384615384616) internal successors, (938), 13 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:30,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:30,139 INFO L209 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] [2022-11-16 11:51:30,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:30,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:30,345 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:30,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:30,345 INFO L85 PathProgramCache]: Analyzing trace with hash -822204273, now seen corresponding path program 1 times [2022-11-16 11:51:30,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:30,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570879632] [2022-11-16 11:51:30,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:30,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:30,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:30,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:30,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:30,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570879632] [2022-11-16 11:51:30,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570879632] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:30,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035846453] [2022-11-16 11:51:30,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:30,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:30,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:30,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:30,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:51:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:30,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:51:30,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:31,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:31,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:31,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035846453] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:31,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:31,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-16 11:51:31,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638917194] [2022-11-16 11:51:31,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:31,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:51:31,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:31,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:51:31,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:51:31,622 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2022-11-16 11:51:31,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 111 transitions, 482 flow. Second operand has 18 states, 18 states have (on average 71.0) internal successors, (1278), 18 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:31,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:31,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2022-11-16 11:51:31,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:32,500 INFO L130 PetriNetUnfolder]: 209/614 cut-off events. [2022-11-16 11:51:32,500 INFO L131 PetriNetUnfolder]: For 1254/1254 co-relation queries the response was YES. [2022-11-16 11:51:32,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1683 conditions, 614 events. 209/614 cut-off events. For 1254/1254 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3044 event pairs, 6 based on Foata normal form. 12/582 useless extension candidates. Maximal degree in co-relation 1664. Up to 128 conditions per place. [2022-11-16 11:51:32,507 INFO L137 encePairwiseOnDemand]: 90/104 looper letters, 91 selfloop transitions, 30 changer transitions 0/181 dead transitions. [2022-11-16 11:51:32,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 181 transitions, 1151 flow [2022-11-16 11:51:32,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:51:32,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 11:51:32,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1255 transitions. [2022-11-16 11:51:32,511 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.709841628959276 [2022-11-16 11:51:32,511 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1255 transitions. [2022-11-16 11:51:32,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1255 transitions. [2022-11-16 11:51:32,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:32,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1255 transitions. [2022-11-16 11:51:32,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.82352941176471) internal successors, (1255), 17 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:32,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 104.0) internal successors, (1872), 18 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:32,519 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 104.0) internal successors, (1872), 18 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:32,520 INFO L175 Difference]: Start difference. First operand has 123 places, 111 transitions, 482 flow. Second operand 17 states and 1255 transitions. [2022-11-16 11:51:32,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 181 transitions, 1151 flow [2022-11-16 11:51:32,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 181 transitions, 1119 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-16 11:51:32,528 INFO L231 Difference]: Finished difference. Result has 140 places, 125 transitions, 680 flow [2022-11-16 11:51:32,528 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=680, PETRI_PLACES=140, PETRI_TRANSITIONS=125} [2022-11-16 11:51:32,529 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 48 predicate places. [2022-11-16 11:51:32,529 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 680 flow [2022-11-16 11:51:32,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 71.0) internal successors, (1278), 18 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:32,530 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:32,531 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:32,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:32,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:32,741 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:32,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:32,741 INFO L85 PathProgramCache]: Analyzing trace with hash -869025409, now seen corresponding path program 2 times [2022-11-16 11:51:32,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:32,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130223926] [2022-11-16 11:51:32,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:32,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:32,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:32,962 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:32,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:32,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130223926] [2022-11-16 11:51:32,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130223926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:32,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:32,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:51:32,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825751664] [2022-11-16 11:51:32,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:32,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:51:32,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:32,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:51:32,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:51:32,966 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-16 11:51:32,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 125 transitions, 680 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:32,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:32,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-16 11:51:32,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:33,184 INFO L130 PetriNetUnfolder]: 230/959 cut-off events. [2022-11-16 11:51:33,184 INFO L131 PetriNetUnfolder]: For 2150/2154 co-relation queries the response was YES. [2022-11-16 11:51:33,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2706 conditions, 959 events. 230/959 cut-off events. For 2150/2154 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6731 event pairs, 35 based on Foata normal form. 1/909 useless extension candidates. Maximal degree in co-relation 2681. Up to 193 conditions per place. [2022-11-16 11:51:33,195 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 22 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2022-11-16 11:51:33,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 139 transitions, 778 flow [2022-11-16 11:51:33,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:51:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:51:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-16 11:51:33,197 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.90625 [2022-11-16 11:51:33,197 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-16 11:51:33,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-16 11:51:33,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:33,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-16 11:51:33,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:33,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:33,200 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:33,200 INFO L175 Difference]: Start difference. First operand has 140 places, 125 transitions, 680 flow. Second operand 4 states and 377 transitions. [2022-11-16 11:51:33,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 139 transitions, 778 flow [2022-11-16 11:51:33,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 139 transitions, 752 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-16 11:51:33,215 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 688 flow [2022-11-16 11:51:33,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=688, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-11-16 11:51:33,218 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 47 predicate places. [2022-11-16 11:51:33,218 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 688 flow [2022-11-16 11:51:33,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:33,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:33,219 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:33,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:51:33,220 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:33,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:33,220 INFO L85 PathProgramCache]: Analyzing trace with hash 872325249, now seen corresponding path program 1 times [2022-11-16 11:51:33,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:33,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081499629] [2022-11-16 11:51:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:33,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:33,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:33,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081499629] [2022-11-16 11:51:33,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081499629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:33,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379505963] [2022-11-16 11:51:33,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:33,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:33,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:33,803 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:33,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:51:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:33,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:51:33,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:34,382 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:51:34,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:51:35,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379505963] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:35,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:35,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2022-11-16 11:51:35,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575993559] [2022-11-16 11:51:35,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:35,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 11:51:35,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:35,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 11:51:35,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-11-16 11:51:35,082 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-16 11:51:35,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 688 flow. Second operand has 21 states, 21 states have (on average 70.04761904761905) internal successors, (1471), 21 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:35,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:35,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-16 11:51:35,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:37,180 INFO L130 PetriNetUnfolder]: 762/2095 cut-off events. [2022-11-16 11:51:37,180 INFO L131 PetriNetUnfolder]: For 6995/7031 co-relation queries the response was YES. [2022-11-16 11:51:37,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7237 conditions, 2095 events. 762/2095 cut-off events. For 6995/7031 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14962 event pairs, 88 based on Foata normal form. 67/2078 useless extension candidates. Maximal degree in co-relation 7209. Up to 392 conditions per place. [2022-11-16 11:51:37,200 INFO L137 encePairwiseOnDemand]: 88/104 looper letters, 132 selfloop transitions, 48 changer transitions 0/242 dead transitions. [2022-11-16 11:51:37,200 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 242 transitions, 1862 flow [2022-11-16 11:51:37,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 11:51:37,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-16 11:51:37,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1675 transitions. [2022-11-16 11:51:37,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7002508361204013 [2022-11-16 11:51:37,206 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1675 transitions. [2022-11-16 11:51:37,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1675 transitions. [2022-11-16 11:51:37,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:37,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1675 transitions. [2022-11-16 11:51:37,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 72.82608695652173) internal successors, (1675), 23 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:37,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 104.0) internal successors, (2496), 24 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:37,219 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 104.0) internal successors, (2496), 24 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:37,219 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 688 flow. Second operand 23 states and 1675 transitions. [2022-11-16 11:51:37,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 242 transitions, 1862 flow [2022-11-16 11:51:37,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 242 transitions, 1862 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:51:37,247 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 1153 flow [2022-11-16 11:51:37,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1153, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2022-11-16 11:51:37,249 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 81 predicate places. [2022-11-16 11:51:37,249 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 1153 flow [2022-11-16 11:51:37,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 70.04761904761905) internal successors, (1471), 21 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:37,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:37,250 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:37,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:37,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 11:51:37,456 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:37,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:37,456 INFO L85 PathProgramCache]: Analyzing trace with hash 600330390, now seen corresponding path program 1 times [2022-11-16 11:51:37,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:37,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886715407] [2022-11-16 11:51:37,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:37,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:37,634 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:51:37,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:37,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886715407] [2022-11-16 11:51:37,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886715407] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:37,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587911937] [2022-11-16 11:51:37,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:37,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:37,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:37,639 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:37,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:51:37,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:37,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:51:37,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:51:37,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:51:37,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587911937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:37,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:51:37,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-16 11:51:37,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104782809] [2022-11-16 11:51:37,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:37,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:51:37,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:37,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:51:37,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:51:37,818 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-16 11:51:37,819 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 1153 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:37,819 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:37,819 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-16 11:51:37,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:38,378 INFO L130 PetriNetUnfolder]: 478/2731 cut-off events. [2022-11-16 11:51:38,378 INFO L131 PetriNetUnfolder]: For 12096/12236 co-relation queries the response was YES. [2022-11-16 11:51:38,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9462 conditions, 2731 events. 478/2731 cut-off events. For 12096/12236 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 26986 event pairs, 103 based on Foata normal form. 32/2676 useless extension candidates. Maximal degree in co-relation 9422. Up to 368 conditions per place. [2022-11-16 11:51:38,406 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 19 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-11-16 11:51:38,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 171 transitions, 1231 flow [2022-11-16 11:51:38,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:51:38,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:51:38,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-11-16 11:51:38,408 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9038461538461539 [2022-11-16 11:51:38,408 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-11-16 11:51:38,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-11-16 11:51:38,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:38,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-11-16 11:51:38,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:38,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:38,411 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:38,411 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 1153 flow. Second operand 4 states and 376 transitions. [2022-11-16 11:51:38,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 171 transitions, 1231 flow [2022-11-16 11:51:38,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 171 transitions, 1182 flow, removed 17 selfloop flow, removed 6 redundant places. [2022-11-16 11:51:38,464 INFO L231 Difference]: Finished difference. Result has 173 places, 163 transitions, 1138 flow [2022-11-16 11:51:38,465 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1138, PETRI_PLACES=173, PETRI_TRANSITIONS=163} [2022-11-16 11:51:38,466 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 81 predicate places. [2022-11-16 11:51:38,466 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 163 transitions, 1138 flow [2022-11-16 11:51:38,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:38,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:38,466 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:38,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:38,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:38,673 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:38,674 INFO L85 PathProgramCache]: Analyzing trace with hash -857400482, now seen corresponding path program 1 times [2022-11-16 11:51:38,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:38,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283101324] [2022-11-16 11:51:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:38,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:38,964 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:51:38,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:38,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283101324] [2022-11-16 11:51:38,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283101324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:38,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:51:38,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:51:38,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84820442] [2022-11-16 11:51:38,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:38,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:51:38,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:38,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:51:38,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:51:38,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-16 11:51:38,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 163 transitions, 1138 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:38,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:38,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-16 11:51:38,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:39,537 INFO L130 PetriNetUnfolder]: 546/2510 cut-off events. [2022-11-16 11:51:39,537 INFO L131 PetriNetUnfolder]: For 10414/10480 co-relation queries the response was YES. [2022-11-16 11:51:39,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9044 conditions, 2510 events. 546/2510 cut-off events. For 10414/10480 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 23752 event pairs, 92 based on Foata normal form. 62/2532 useless extension candidates. Maximal degree in co-relation 9001. Up to 405 conditions per place. [2022-11-16 11:51:39,569 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 22 selfloop transitions, 6 changer transitions 0/175 dead transitions. [2022-11-16 11:51:39,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 175 transitions, 1243 flow [2022-11-16 11:51:39,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:51:39,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:51:39,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2022-11-16 11:51:39,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9014423076923077 [2022-11-16 11:51:39,571 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2022-11-16 11:51:39,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2022-11-16 11:51:39,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:39,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2022-11-16 11:51:39,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:39,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:39,574 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:39,574 INFO L175 Difference]: Start difference. First operand has 173 places, 163 transitions, 1138 flow. Second operand 4 states and 375 transitions. [2022-11-16 11:51:39,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 175 transitions, 1243 flow [2022-11-16 11:51:39,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 1243 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:51:39,630 INFO L231 Difference]: Finished difference. Result has 178 places, 165 transitions, 1172 flow [2022-11-16 11:51:39,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1172, PETRI_PLACES=178, PETRI_TRANSITIONS=165} [2022-11-16 11:51:39,632 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 86 predicate places. [2022-11-16 11:51:39,632 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 165 transitions, 1172 flow [2022-11-16 11:51:39,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:39,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:39,633 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:39,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:51:39,633 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:39,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:39,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1020424850, now seen corresponding path program 1 times [2022-11-16 11:51:39,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:39,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624871871] [2022-11-16 11:51:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:39,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:40,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:40,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624871871] [2022-11-16 11:51:40,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624871871] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:40,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271929056] [2022-11-16 11:51:40,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:40,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:40,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:40,147 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:40,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:51:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:40,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:51:40,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:40,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:40,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:40,689 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:40,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271929056] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:40,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:40,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-16 11:51:40,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241653334] [2022-11-16 11:51:40,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:40,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:51:40,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:40,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:51:40,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:51:40,692 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-16 11:51:40,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 165 transitions, 1172 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:40,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:40,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-16 11:51:40,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:41,577 INFO L130 PetriNetUnfolder]: 478/2754 cut-off events. [2022-11-16 11:51:41,577 INFO L131 PetriNetUnfolder]: For 12323/12490 co-relation queries the response was YES. [2022-11-16 11:51:41,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10041 conditions, 2754 events. 478/2754 cut-off events. For 12323/12490 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 27324 event pairs, 119 based on Foata normal form. 47/2745 useless extension candidates. Maximal degree in co-relation 9996. Up to 449 conditions per place. [2022-11-16 11:51:41,618 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 29 selfloop transitions, 19 changer transitions 4/195 dead transitions. [2022-11-16 11:51:41,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 195 transitions, 1365 flow [2022-11-16 11:51:41,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:51:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:51:41,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2022-11-16 11:51:41,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8105769230769231 [2022-11-16 11:51:41,623 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2022-11-16 11:51:41,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2022-11-16 11:51:41,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:41,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2022-11-16 11:51:41,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:41,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:41,630 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:41,630 INFO L175 Difference]: Start difference. First operand has 178 places, 165 transitions, 1172 flow. Second operand 10 states and 843 transitions. [2022-11-16 11:51:41,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 195 transitions, 1365 flow [2022-11-16 11:51:41,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 195 transitions, 1365 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:51:41,700 INFO L231 Difference]: Finished difference. Result has 190 places, 175 transitions, 1272 flow [2022-11-16 11:51:41,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1272, PETRI_PLACES=190, PETRI_TRANSITIONS=175} [2022-11-16 11:51:41,702 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 98 predicate places. [2022-11-16 11:51:41,703 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 175 transitions, 1272 flow [2022-11-16 11:51:41,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:41,703 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:41,704 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:41,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:41,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 11:51:41,910 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:41,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:41,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1667154814, now seen corresponding path program 2 times [2022-11-16 11:51:41,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:41,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196046370] [2022-11-16 11:51:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:41,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:41,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:51:42,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:42,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196046370] [2022-11-16 11:51:42,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196046370] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:42,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844305386] [2022-11-16 11:51:42,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:51:42,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:42,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:42,385 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:42,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:51:42,481 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:51:42,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:51:42,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:51:42,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:51:42,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:42,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 11:51:42,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844305386] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:42,885 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:42,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-16 11:51:42,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770322748] [2022-11-16 11:51:42,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:42,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:51:42,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:42,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:51:42,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:51:42,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-16 11:51:42,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 175 transitions, 1272 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:42,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:42,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-16 11:51:42,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:44,029 INFO L130 PetriNetUnfolder]: 681/3850 cut-off events. [2022-11-16 11:51:44,029 INFO L131 PetriNetUnfolder]: For 19336/19880 co-relation queries the response was YES. [2022-11-16 11:51:44,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14309 conditions, 3850 events. 681/3850 cut-off events. For 19336/19880 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 40273 event pairs, 146 based on Foata normal form. 90/3844 useless extension candidates. Maximal degree in co-relation 14260. Up to 563 conditions per place. [2022-11-16 11:51:44,082 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 37 selfloop transitions, 26 changer transitions 4/210 dead transitions. [2022-11-16 11:51:44,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 210 transitions, 1564 flow [2022-11-16 11:51:44,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:51:44,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 11:51:44,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 844 transitions. [2022-11-16 11:51:44,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8115384615384615 [2022-11-16 11:51:44,085 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 844 transitions. [2022-11-16 11:51:44,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 844 transitions. [2022-11-16 11:51:44,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:44,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 844 transitions. [2022-11-16 11:51:44,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.4) internal successors, (844), 10 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:44,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:44,090 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:44,090 INFO L175 Difference]: Start difference. First operand has 190 places, 175 transitions, 1272 flow. Second operand 10 states and 844 transitions. [2022-11-16 11:51:44,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 210 transitions, 1564 flow [2022-11-16 11:51:44,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 210 transitions, 1493 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-11-16 11:51:44,271 INFO L231 Difference]: Finished difference. Result has 196 places, 190 transitions, 1401 flow [2022-11-16 11:51:44,271 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1401, PETRI_PLACES=196, PETRI_TRANSITIONS=190} [2022-11-16 11:51:44,272 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 104 predicate places. [2022-11-16 11:51:44,272 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 190 transitions, 1401 flow [2022-11-16 11:51:44,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:44,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:44,275 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:44,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:44,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:51:44,481 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:44,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:44,482 INFO L85 PathProgramCache]: Analyzing trace with hash 996052654, now seen corresponding path program 3 times [2022-11-16 11:51:44,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:44,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059927791] [2022-11-16 11:51:44,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:44,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:44,899 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:44,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:44,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059927791] [2022-11-16 11:51:44,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059927791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:44,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280664152] [2022-11-16 11:51:44,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:51:44,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:44,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:44,901 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:44,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:51:45,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 11:51:45,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:51:45,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:51:45,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:45,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:45,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:45,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280664152] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:45,458 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:45,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-16 11:51:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70368436] [2022-11-16 11:51:45,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:45,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:51:45,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:45,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:51:45,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:51:45,461 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-16 11:51:45,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 190 transitions, 1401 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:45,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:45,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-16 11:51:45,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:47,582 INFO L130 PetriNetUnfolder]: 1211/6869 cut-off events. [2022-11-16 11:51:47,583 INFO L131 PetriNetUnfolder]: For 37015/37943 co-relation queries the response was YES. [2022-11-16 11:51:47,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25741 conditions, 6869 events. 1211/6869 cut-off events. For 37015/37943 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 81742 event pairs, 169 based on Foata normal form. 163/6897 useless extension candidates. Maximal degree in co-relation 25689. Up to 840 conditions per place. [2022-11-16 11:51:47,664 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 48 selfloop transitions, 38 changer transitions 4/233 dead transitions. [2022-11-16 11:51:47,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 233 transitions, 1770 flow [2022-11-16 11:51:47,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:51:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:51:47,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 936 transitions. [2022-11-16 11:51:47,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-11-16 11:51:47,667 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 936 transitions. [2022-11-16 11:51:47,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 936 transitions. [2022-11-16 11:51:47,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:47,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 936 transitions. [2022-11-16 11:51:47,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:47,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:47,673 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:47,673 INFO L175 Difference]: Start difference. First operand has 196 places, 190 transitions, 1401 flow. Second operand 11 states and 936 transitions. [2022-11-16 11:51:47,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 233 transitions, 1770 flow [2022-11-16 11:51:47,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 233 transitions, 1737 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-11-16 11:51:47,849 INFO L231 Difference]: Finished difference. Result has 202 places, 205 transitions, 1580 flow [2022-11-16 11:51:47,850 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1580, PETRI_PLACES=202, PETRI_TRANSITIONS=205} [2022-11-16 11:51:47,850 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 110 predicate places. [2022-11-16 11:51:47,851 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 205 transitions, 1580 flow [2022-11-16 11:51:47,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:47,851 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:47,852 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:47,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 11:51:48,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 11:51:48,057 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:48,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:48,057 INFO L85 PathProgramCache]: Analyzing trace with hash -183912038, now seen corresponding path program 4 times [2022-11-16 11:51:48,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:48,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718061058] [2022-11-16 11:51:48,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:48,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:48,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:48,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:48,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718061058] [2022-11-16 11:51:48,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718061058] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:48,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906430771] [2022-11-16 11:51:48,516 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 11:51:48,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:48,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:48,519 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:48,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:51:48,615 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 11:51:48,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:51:48,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 11:51:48,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:48,836 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:48,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:48,992 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:48,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906430771] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:48,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:48,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-16 11:51:48,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25725935] [2022-11-16 11:51:48,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:48,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:51:48,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:48,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:51:48,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:51:48,996 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-16 11:51:48,997 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 205 transitions, 1580 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:48,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:48,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-16 11:51:48,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:50,904 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([254] L49-->L51: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][125], [Black: 4352#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 3761#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 4350#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 2558#true, 1400#(< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))), 617#true, 6#L94-4true, Black: 3161#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3162#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), 2553#(= (* (div ~d2~0 256) 256) ~d2~0), 4357#true, Black: 2217#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (<= (+ |thread1Thread1of1ForFork0_#t~post3| (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div |thread1Thread1of1ForFork0_#t~post3| 4294967296) 4294967296) ~i2~0))), Black: 2231#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), Black: 2229#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 2225#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1834#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), Black: 2219#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1651#true, Black: 2233#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), 131#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), Black: 2221#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 2235#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 2213#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 2237#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 787#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i1~0 4294967296) 0)), 2407#(<= (mod ~d1~0 256) 0), Black: 631#true, 106#true, Black: 2562#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 603#true, 1646#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), 3757#true, Black: 592#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 282#(and (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i2~0 4294967296) 0)), Black: 126#true, Black: 594#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), 8#L51true, Black: 1327#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0)), 59#L70true, Black: 1111#(and (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296))), Black: 608#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)), Black: 1623#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 612#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 1106#true, Black: 607#(<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)), Black: 1633#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (< (* (div (mod (+ ~i2~0 1) 4294967296) 2) 2) (+ (mod ~i1~0 4294967296) 1))), 3157#true, Black: 1627#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296))), Black: 1643#true, Black: 1645#(not (= (* (div ~d2~0 256) 256) ~d2~0)), Black: 2253#true, Black: 622#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)), 1660#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 2420#(= ~d1~0 1), Black: 624#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0))), Black: 113#(= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 2551#true, 636#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 2554#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0))]) [2022-11-16 11:51:50,904 INFO L383 tUnfolder$Statistics]: this new event has 89 ancestors and is cut-off event [2022-11-16 11:51:50,904 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-16 11:51:50,904 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-16 11:51:50,905 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-16 11:51:51,351 INFO L130 PetriNetUnfolder]: 1265/7310 cut-off events. [2022-11-16 11:51:51,351 INFO L131 PetriNetUnfolder]: For 41962/43231 co-relation queries the response was YES. [2022-11-16 11:51:51,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28036 conditions, 7310 events. 1265/7310 cut-off events. For 41962/43231 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 88764 event pairs, 217 based on Foata normal form. 175/7335 useless extension candidates. Maximal degree in co-relation 27982. Up to 1130 conditions per place. [2022-11-16 11:51:51,423 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 58 selfloop transitions, 34 changer transitions 4/239 dead transitions. [2022-11-16 11:51:51,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 239 transitions, 1937 flow [2022-11-16 11:51:51,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:51:51,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:51:51,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 931 transitions. [2022-11-16 11:51:51,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8138111888111889 [2022-11-16 11:51:51,426 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 931 transitions. [2022-11-16 11:51:51,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 931 transitions. [2022-11-16 11:51:51,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:51,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 931 transitions. [2022-11-16 11:51:51,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.63636363636364) internal successors, (931), 11 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:51,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:51,431 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:51,432 INFO L175 Difference]: Start difference. First operand has 202 places, 205 transitions, 1580 flow. Second operand 11 states and 931 transitions. [2022-11-16 11:51:51,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 239 transitions, 1937 flow [2022-11-16 11:51:51,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 239 transitions, 1865 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-11-16 11:51:51,621 INFO L231 Difference]: Finished difference. Result has 207 places, 213 transitions, 1692 flow [2022-11-16 11:51:51,622 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1692, PETRI_PLACES=207, PETRI_TRANSITIONS=213} [2022-11-16 11:51:51,622 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 115 predicate places. [2022-11-16 11:51:51,622 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 213 transitions, 1692 flow [2022-11-16 11:51:51,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:51,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:51,623 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:51,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:51,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 11:51:51,829 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:51,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1715941782, now seen corresponding path program 5 times [2022-11-16 11:51:51,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:51,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68634645] [2022-11-16 11:51:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:51,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:52,210 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:52,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:52,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68634645] [2022-11-16 11:51:52,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68634645] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:52,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396323856] [2022-11-16 11:51:52,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-16 11:51:52,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:52,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:52,215 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:52,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:51:52,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-16 11:51:52,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:51:52,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:51:52,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:52,622 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:52,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:52,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396323856] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:52,783 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:52,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-16 11:51:52,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296171266] [2022-11-16 11:51:52,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:52,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:51:52,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:52,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:51:52,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:51:52,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-16 11:51:52,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 213 transitions, 1692 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:52,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:52,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-16 11:51:52,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:51:54,405 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([254] L49-->L51: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][127], [Black: 3761#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 4957#true, 2558#true, 617#true, 6#L94-4true, Black: 3161#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3162#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), 4357#true, Black: 2217#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (<= (+ |thread1Thread1of1ForFork0_#t~post3| (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div |thread1Thread1of1ForFork0_#t~post3| 4294967296) 4294967296) ~i2~0))), Black: 2231#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), 1327#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0)), Black: 2229#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 2225#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1834#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), Black: 2219#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1651#true, Black: 2233#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 2221#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), 131#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), Black: 2235#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 2213#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 2237#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 787#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i1~0 4294967296) 0)), Black: 631#true, 2407#(<= (mod ~d1~0 256) 0), 106#true, 1645#(not (= (* (div ~d2~0 256) 256) ~d2~0)), 603#true, Black: 592#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), 3757#true, Black: 282#(and (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i2~0 4294967296) 0)), Black: 126#true, Black: 4952#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 594#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 4361#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 4950#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L51true, 59#L70true, Black: 1111#(and (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296))), Black: 608#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)), Black: 1623#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 612#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 607#(<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)), Black: 1106#true, Black: 1633#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (< (* (div (mod (+ ~i2~0 1) 4294967296) 2) 2) (+ (mod ~i1~0 4294967296) 1))), 3157#true, Black: 1627#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296))), Black: 1643#true, Black: 1646#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), 1660#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 622#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)), Black: 2253#true, Black: 624#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0))), Black: 2420#(= ~d1~0 1), 2554#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), Black: 113#(= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 2551#true, 636#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))))]) [2022-11-16 11:51:54,405 INFO L383 tUnfolder$Statistics]: this new event has 89 ancestors and is cut-off event [2022-11-16 11:51:54,405 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-16 11:51:54,405 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-16 11:51:54,405 INFO L386 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2022-11-16 11:51:54,449 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([254] L49-->L51: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][127], [Black: 3761#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 4957#true, 2558#true, 1400#(< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))), 617#true, 6#L94-4true, Black: 3161#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3162#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), 2553#(= (* (div ~d2~0 256) 256) ~d2~0), 4357#true, Black: 2217#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (<= (+ |thread1Thread1of1ForFork0_#t~post3| (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div |thread1Thread1of1ForFork0_#t~post3| 4294967296) 4294967296) ~i2~0))), Black: 2231#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), Black: 2229#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 2225#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1834#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), Black: 2219#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1651#true, Black: 2233#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), 131#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), Black: 2221#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 2235#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 2213#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 2237#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 787#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i1~0 4294967296) 0)), Black: 631#true, 2407#(<= (mod ~d1~0 256) 0), 106#true, 603#true, Black: 592#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), 3757#true, 1646#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), Black: 282#(and (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i2~0 4294967296) 0)), Black: 126#true, Black: 4952#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 594#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 4361#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 4950#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L51true, Black: 1327#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0)), 59#L70true, Black: 1111#(and (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296))), Black: 608#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)), Black: 1623#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 612#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 607#(<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)), Black: 1106#true, Black: 1633#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (< (* (div (mod (+ ~i2~0 1) 4294967296) 2) 2) (+ (mod ~i1~0 4294967296) 1))), 3157#true, Black: 1627#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296))), Black: 1643#true, Black: 1645#(not (= (* (div ~d2~0 256) 256) ~d2~0)), 1660#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 622#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)), Black: 2253#true, Black: 624#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0))), Black: 2420#(= ~d1~0 1), Black: 113#(= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 2551#true, 636#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 2554#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0))]) [2022-11-16 11:51:54,450 INFO L383 tUnfolder$Statistics]: this new event has 96 ancestors and is cut-off event [2022-11-16 11:51:54,450 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-16 11:51:54,450 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-16 11:51:54,450 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-16 11:51:55,069 INFO L130 PetriNetUnfolder]: 1661/9687 cut-off events. [2022-11-16 11:51:55,070 INFO L131 PetriNetUnfolder]: For 57554/59094 co-relation queries the response was YES. [2022-11-16 11:51:55,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37173 conditions, 9687 events. 1661/9687 cut-off events. For 57554/59094 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 123439 event pairs, 264 based on Foata normal form. 313/9819 useless extension candidates. Maximal degree in co-relation 37118. Up to 1219 conditions per place. [2022-11-16 11:51:55,157 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 65 selfloop transitions, 50 changer transitions 4/262 dead transitions. [2022-11-16 11:51:55,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 262 transitions, 2225 flow [2022-11-16 11:51:55,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:51:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:51:55,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 934 transitions. [2022-11-16 11:51:55,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8164335664335665 [2022-11-16 11:51:55,160 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 934 transitions. [2022-11-16 11:51:55,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 934 transitions. [2022-11-16 11:51:55,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:51:55,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 934 transitions. [2022-11-16 11:51:55,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.9090909090909) internal successors, (934), 11 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:55,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:55,182 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:55,184 INFO L175 Difference]: Start difference. First operand has 207 places, 213 transitions, 1692 flow. Second operand 11 states and 934 transitions. [2022-11-16 11:51:55,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 262 transitions, 2225 flow [2022-11-16 11:51:55,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 262 transitions, 2178 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-16 11:51:55,436 INFO L231 Difference]: Finished difference. Result has 215 places, 235 transitions, 2045 flow [2022-11-16 11:51:55,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2045, PETRI_PLACES=215, PETRI_TRANSITIONS=235} [2022-11-16 11:51:55,437 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 123 predicate places. [2022-11-16 11:51:55,437 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 235 transitions, 2045 flow [2022-11-16 11:51:55,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:55,438 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:51:55,438 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:51:55,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:55,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:55,645 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:51:55,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:55,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1683122846, now seen corresponding path program 6 times [2022-11-16 11:51:55,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:55,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101919713] [2022-11-16 11:51:55,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:55,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:56,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:56,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101919713] [2022-11-16 11:51:56,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101919713] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:56,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666616099] [2022-11-16 11:51:56,210 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-16 11:51:56,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:56,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:56,212 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:56,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:51:56,345 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-16 11:51:56,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:51:56,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-16 11:51:56,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:56,594 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:56,594 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:51:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:51:56,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666616099] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:51:56,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:51:56,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-16 11:51:56,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322037285] [2022-11-16 11:51:56,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:51:56,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:51:56,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:56,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:51:56,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:51:56,753 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-16 11:51:56,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 235 transitions, 2045 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:51:56,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:51:56,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-16 11:51:56,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:52:00,054 INFO L130 PetriNetUnfolder]: 2301/13126 cut-off events. [2022-11-16 11:52:00,055 INFO L131 PetriNetUnfolder]: For 85518/87745 co-relation queries the response was YES. [2022-11-16 11:52:00,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51906 conditions, 13126 events. 2301/13126 cut-off events. For 85518/87745 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 175106 event pairs, 416 based on Foata normal form. 384/13267 useless extension candidates. Maximal degree in co-relation 51847. Up to 1872 conditions per place. [2022-11-16 11:52:00,191 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 105 selfloop transitions, 46 changer transitions 4/298 dead transitions. [2022-11-16 11:52:00,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 298 transitions, 2812 flow [2022-11-16 11:52:00,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:52:00,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:52:00,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 936 transitions. [2022-11-16 11:52:00,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-11-16 11:52:00,195 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 936 transitions. [2022-11-16 11:52:00,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 936 transitions. [2022-11-16 11:52:00,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:52:00,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 936 transitions. [2022-11-16 11:52:00,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:00,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:00,203 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:00,203 INFO L175 Difference]: Start difference. First operand has 215 places, 235 transitions, 2045 flow. Second operand 11 states and 936 transitions. [2022-11-16 11:52:00,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 298 transitions, 2812 flow [2022-11-16 11:52:00,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 298 transitions, 2753 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-11-16 11:52:00,489 INFO L231 Difference]: Finished difference. Result has 223 places, 270 transitions, 2551 flow [2022-11-16 11:52:00,490 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2551, PETRI_PLACES=223, PETRI_TRANSITIONS=270} [2022-11-16 11:52:00,490 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 131 predicate places. [2022-11-16 11:52:00,491 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 270 transitions, 2551 flow [2022-11-16 11:52:00,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:00,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:52:00,492 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:00,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:52:00,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:00,694 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:52:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:00,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1996064928, now seen corresponding path program 1 times [2022-11-16 11:52:00,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:00,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730825775] [2022-11-16 11:52:00,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:00,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:00,889 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:52:00,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:00,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730825775] [2022-11-16 11:52:00,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730825775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:00,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:52:00,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 11:52:00,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422694950] [2022-11-16 11:52:00,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:00,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:52:00,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:00,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:52:00,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:52:00,893 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-16 11:52:00,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 270 transitions, 2551 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:00,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:52:00,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-16 11:52:00,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:52:02,476 INFO L130 PetriNetUnfolder]: 777/5959 cut-off events. [2022-11-16 11:52:02,476 INFO L131 PetriNetUnfolder]: For 36749/37490 co-relation queries the response was YES. [2022-11-16 11:52:02,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24116 conditions, 5959 events. 777/5959 cut-off events. For 36749/37490 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 70957 event pairs, 95 based on Foata normal form. 154/6066 useless extension candidates. Maximal degree in co-relation 24053. Up to 517 conditions per place. [2022-11-16 11:52:02,521 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 62 selfloop transitions, 6 changer transitions 0/256 dead transitions. [2022-11-16 11:52:02,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 256 transitions, 2464 flow [2022-11-16 11:52:02,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:52:02,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:52:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2022-11-16 11:52:02,523 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8966346153846154 [2022-11-16 11:52:02,523 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2022-11-16 11:52:02,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2022-11-16 11:52:02,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:52:02,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2022-11-16 11:52:02,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:02,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:02,526 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:02,526 INFO L175 Difference]: Start difference. First operand has 223 places, 270 transitions, 2551 flow. Second operand 4 states and 373 transitions. [2022-11-16 11:52:02,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 256 transitions, 2464 flow [2022-11-16 11:52:02,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 256 transitions, 2397 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-11-16 11:52:02,679 INFO L231 Difference]: Finished difference. Result has 220 places, 249 transitions, 2246 flow [2022-11-16 11:52:02,679 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2246, PETRI_PLACES=220, PETRI_TRANSITIONS=249} [2022-11-16 11:52:02,679 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 128 predicate places. [2022-11-16 11:52:02,679 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 249 transitions, 2246 flow [2022-11-16 11:52:02,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:02,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:52:02,680 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:52:02,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:52:02,680 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:52:02,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:02,680 INFO L85 PathProgramCache]: Analyzing trace with hash 142894895, now seen corresponding path program 7 times [2022-11-16 11:52:02,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:02,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244011558] [2022-11-16 11:52:02,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:02,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:52:03,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:03,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244011558] [2022-11-16 11:52:03,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244011558] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:03,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966871400] [2022-11-16 11:52:03,560 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 11:52:03,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:03,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:03,561 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:03,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:52:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:03,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:52:03,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:52:04,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:52:05,892 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:52:05,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966871400] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:52:05,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:52:05,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 35 [2022-11-16 11:52:05,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344453429] [2022-11-16 11:52:05,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:52:05,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-16 11:52:05,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:05,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-16 11:52:05,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2022-11-16 11:52:05,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 104 [2022-11-16 11:52:05,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 249 transitions, 2246 flow. Second operand has 35 states, 35 states have (on average 66.0) internal successors, (2310), 35 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:52:05,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:52:05,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 104 [2022-11-16 11:52:05,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:53:58,491 INFO L130 PetriNetUnfolder]: 8382/24198 cut-off events. [2022-11-16 11:53:58,492 INFO L131 PetriNetUnfolder]: For 191267/191267 co-relation queries the response was YES. [2022-11-16 11:53:58,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116309 conditions, 24198 events. 8382/24198 cut-off events. For 191267/191267 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 282544 event pairs, 368 based on Foata normal form. 722/24840 useless extension candidates. Maximal degree in co-relation 116247. Up to 2550 conditions per place. [2022-11-16 11:53:58,704 INFO L137 encePairwiseOnDemand]: 83/104 looper letters, 1569 selfloop transitions, 295 changer transitions 0/1927 dead transitions. [2022-11-16 11:53:58,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1927 transitions, 23513 flow [2022-11-16 11:53:58,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-16 11:53:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2022-11-16 11:53:58,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 8801 transitions. [2022-11-16 11:53:58,721 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6611328125 [2022-11-16 11:53:58,721 INFO L72 ComplementDD]: Start complementDD. Operand 128 states and 8801 transitions. [2022-11-16 11:53:58,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 8801 transitions. [2022-11-16 11:53:58,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:53:58,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 128 states and 8801 transitions. [2022-11-16 11:53:58,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 129 states, 128 states have (on average 68.7578125) internal successors, (8801), 128 states have internal predecessors, (8801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:58,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 129 states, 129 states have (on average 104.0) internal successors, (13416), 129 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:58,762 INFO L81 ComplementDD]: Finished complementDD. Result has 129 states, 129 states have (on average 104.0) internal successors, (13416), 129 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:58,763 INFO L175 Difference]: Start difference. First operand has 220 places, 249 transitions, 2246 flow. Second operand 128 states and 8801 transitions. [2022-11-16 11:53:58,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1927 transitions, 23513 flow [2022-11-16 11:53:59,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1927 transitions, 23513 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:53:59,542 INFO L231 Difference]: Finished difference. Result has 416 places, 493 transitions, 5745 flow [2022-11-16 11:53:59,542 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=128, PETRI_FLOW=5745, PETRI_PLACES=416, PETRI_TRANSITIONS=493} [2022-11-16 11:53:59,543 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 324 predicate places. [2022-11-16 11:53:59,543 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 493 transitions, 5745 flow [2022-11-16 11:53:59,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 66.0) internal successors, (2310), 35 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:53:59,544 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:53:59,544 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:53:59,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 11:53:59,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:53:59,750 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:53:59,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:53:59,750 INFO L85 PathProgramCache]: Analyzing trace with hash -527144562, now seen corresponding path program 8 times [2022-11-16 11:53:59,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:53:59,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636946442] [2022-11-16 11:53:59,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:53:59,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:53:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:54:00,485 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:00,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:54:00,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636946442] [2022-11-16 11:54:00,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636946442] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:54:00,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11864926] [2022-11-16 11:54:00,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:54:00,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:54:00,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:54:00,491 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:54:00,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 11:54:00,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:54:00,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:54:00,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-16 11:54:00,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:54:01,756 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:01,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:54:22,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:54:22,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11864926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:54:22,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:54:22,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2022-11-16 11:54:22,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579070127] [2022-11-16 11:54:22,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:54:22,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-16 11:54:22,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:54:22,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-16 11:54:22,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1196, Unknown=5, NotChecked=0, Total=1332 [2022-11-16 11:54:22,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-16 11:54:22,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 493 transitions, 5745 flow. Second operand has 37 states, 37 states have (on average 69.48648648648648) internal successors, (2571), 37 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:54:22,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:54:22,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-16 11:54:22,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:54:45,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:55:08,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:55:26,771 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:55:27,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:55:37,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:55:46,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:56:33,335 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:57:25,889 INFO L130 PetriNetUnfolder]: 11431/35280 cut-off events. [2022-11-16 11:57:25,889 INFO L131 PetriNetUnfolder]: For 1028781/1029373 co-relation queries the response was YES. [2022-11-16 11:57:26,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262410 conditions, 35280 events. 11431/35280 cut-off events. For 1028781/1029373 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 442016 event pairs, 1536 based on Foata normal form. 274/35198 useless extension candidates. Maximal degree in co-relation 262278. Up to 12952 conditions per place. [2022-11-16 11:57:26,706 INFO L137 encePairwiseOnDemand]: 84/104 looper letters, 772 selfloop transitions, 361 changer transitions 121/1362 dead transitions. [2022-11-16 11:57:26,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1362 transitions, 19418 flow [2022-11-16 11:57:26,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-16 11:57:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-11-16 11:57:26,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 5627 transitions. [2022-11-16 11:57:26,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6848831548198637 [2022-11-16 11:57:26,725 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 5627 transitions. [2022-11-16 11:57:26,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 5627 transitions. [2022-11-16 11:57:26,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:57:26,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 5627 transitions. [2022-11-16 11:57:26,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 71.22784810126582) internal successors, (5627), 79 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:26,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 104.0) internal successors, (8320), 80 states have internal predecessors, (8320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:26,752 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 104.0) internal successors, (8320), 80 states have internal predecessors, (8320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:26,752 INFO L175 Difference]: Start difference. First operand has 416 places, 493 transitions, 5745 flow. Second operand 79 states and 5627 transitions. [2022-11-16 11:57:26,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1362 transitions, 19418 flow [2022-11-16 11:57:33,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 1362 transitions, 17248 flow, removed 802 selfloop flow, removed 23 redundant places. [2022-11-16 11:57:33,745 INFO L231 Difference]: Finished difference. Result has 504 places, 781 transitions, 10274 flow [2022-11-16 11:57:33,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=4672, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=10274, PETRI_PLACES=504, PETRI_TRANSITIONS=781} [2022-11-16 11:57:33,746 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 412 predicate places. [2022-11-16 11:57:33,746 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 781 transitions, 10274 flow [2022-11-16 11:57:33,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 69.48648648648648) internal successors, (2571), 37 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:33,747 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:57:33,747 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:57:33,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 11:57:33,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:33,952 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 11:57:33,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:57:33,952 INFO L85 PathProgramCache]: Analyzing trace with hash -342057850, now seen corresponding path program 9 times [2022-11-16 11:57:33,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:57:33,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219098160] [2022-11-16 11:57:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:57:33,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:57:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:57:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:57:34,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:57:34,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219098160] [2022-11-16 11:57:34,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219098160] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:57:34,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351004123] [2022-11-16 11:57:34,499 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 11:57:34,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:57:34,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:57:34,503 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:57:34,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 11:57:34,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-16 11:57:34,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:57:34,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-16 11:57:34,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:57:35,643 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:57:35,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:57:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:57:37,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351004123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:57:37,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:57:37,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2022-11-16 11:57:37,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039834452] [2022-11-16 11:57:37,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:57:37,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-16 11:57:37,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:57:37,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-16 11:57:37,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1137, Unknown=0, NotChecked=0, Total=1260 [2022-11-16 11:57:37,308 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-16 11:57:37,310 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 781 transitions, 10274 flow. Second operand has 36 states, 36 states have (on average 69.72222222222223) internal successors, (2510), 36 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:57:37,310 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:57:37,310 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-16 11:57:37,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:58:35,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-16 11:59:00,737 INFO L130 PetriNetUnfolder]: 23755/70311 cut-off events. [2022-11-16 11:59:00,737 INFO L131 PetriNetUnfolder]: For 2659315/2660455 co-relation queries the response was YES. [2022-11-16 11:59:02,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 568891 conditions, 70311 events. 23755/70311 cut-off events. For 2659315/2660455 co-relation queries the response was YES. Maximal size of possible extension queue 1712. Compared 898532 event pairs, 1037 based on Foata normal form. 2502/72434 useless extension candidates. Maximal degree in co-relation 568733. Up to 16366 conditions per place. [2022-11-16 11:59:02,398 INFO L137 encePairwiseOnDemand]: 86/104 looper letters, 2173 selfloop transitions, 829 changer transitions 195/3305 dead transitions. [2022-11-16 11:59:02,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 3305 transitions, 51106 flow [2022-11-16 11:59:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-11-16 11:59:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2022-11-16 11:59:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 11582 transitions. [2022-11-16 11:59:02,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6917104634495939 [2022-11-16 11:59:02,412 INFO L72 ComplementDD]: Start complementDD. Operand 161 states and 11582 transitions. [2022-11-16 11:59:02,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 161 states and 11582 transitions. [2022-11-16 11:59:02,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:02,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 161 states and 11582 transitions. [2022-11-16 11:59:02,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 162 states, 161 states have (on average 71.93788819875776) internal successors, (11582), 161 states have internal predecessors, (11582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:02,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 162 states, 162 states have (on average 104.0) internal successors, (16848), 162 states have internal predecessors, (16848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:02,462 INFO L81 ComplementDD]: Finished complementDD. Result has 162 states, 162 states have (on average 104.0) internal successors, (16848), 162 states have internal predecessors, (16848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:02,462 INFO L175 Difference]: Start difference. First operand has 504 places, 781 transitions, 10274 flow. Second operand 161 states and 11582 transitions. [2022-11-16 11:59:02,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 3305 transitions, 51106 flow [2022-11-16 12:00:09,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 3305 transitions, 45269 flow, removed 2890 selfloop flow, removed 19 redundant places. [2022-11-16 12:00:09,171 INFO L231 Difference]: Finished difference. Result has 727 places, 1246 transitions, 19079 flow [2022-11-16 12:00:09,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=8409, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=385, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=161, PETRI_FLOW=19079, PETRI_PLACES=727, PETRI_TRANSITIONS=1246} [2022-11-16 12:00:09,173 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 635 predicate places. [2022-11-16 12:00:09,173 INFO L495 AbstractCegarLoop]: Abstraction has has 727 places, 1246 transitions, 19079 flow [2022-11-16 12:00:09,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 69.72222222222223) internal successors, (2510), 36 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:09,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:09,173 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:09,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:00:09,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbf1445a-5746-4ee6-bcc6-361e6fefbc35/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:00:09,374 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-16 12:00:09,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:09,374 INFO L85 PathProgramCache]: Analyzing trace with hash 694845452, now seen corresponding path program 10 times [2022-11-16 12:00:09,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:09,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496191542] [2022-11-16 12:00:09,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:09,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat