./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/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_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --- 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 12:04:31,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:04:31,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:04:31,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:04:31,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:04:31,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:04:31,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:04:31,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:04:31,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:04:31,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:04:31,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:04:31,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:04:31,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:04:31,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:04:31,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:04:31,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:04:31,830 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:04:31,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:04:31,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:04:31,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:04:31,837 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:04:31,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:04:31,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:04:31,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:04:31,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:04:31,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:04:31,846 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:04:31,847 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:04:31,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:04:31,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:04:31,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:04:31,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:04:31,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:04:31,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:04:31,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:04:31,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:04:31,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:04:31,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:04:31,856 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:04:31,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:04:31,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:04:31,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:04:31,885 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:04:31,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:04:31,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:04:31,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:04:31,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:04:31,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:04:31,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:04:31,889 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:04:31,889 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:04:31,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:04:31,890 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:04:31,890 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:04:31,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:04:31,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:04:31,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:04:31,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:04:31,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:04:31,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:04:31,892 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:04:31,893 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:04:31,893 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:04:31,893 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:04:31,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:04:31,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:04:31,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:04:31,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:04:31,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:04:31,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:04:31,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:04:31,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:04:31,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:04:31,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:04:31,897 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:04:31,897 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:04:31,897 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:04:31,898 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_e71b171b-8ef2-48ce-a313-efd47d784ada/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e [2022-11-16 12:04:32,241 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:04:32,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:04:32,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:04:32,277 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:04:32,278 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:04:32,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2022-11-16 12:04:32,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/data/5f63912cf/e270caa1756c48a4a4dd50eea9616cf3/FLAGafba2bfa7 [2022-11-16 12:04:33,081 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:04:33,081 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/sv-benchmarks/c/goblint-regression/04-mutex_36-trylock_nr.i [2022-11-16 12:04:33,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/data/5f63912cf/e270caa1756c48a4a4dd50eea9616cf3/FLAGafba2bfa7 [2022-11-16 12:04:33,248 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/data/5f63912cf/e270caa1756c48a4a4dd50eea9616cf3 [2022-11-16 12:04:33,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:04:33,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:04:33,258 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:04:33,258 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:04:33,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:04:33,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:04:33" (1/1) ... [2022-11-16 12:04:33,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d97cbe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:33, skipping insertion in model container [2022-11-16 12:04:33,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:04:33" (1/1) ... [2022-11-16 12:04:33,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:04:33,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:04:34,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:04:34,424 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:04:34,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:04:34,613 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:04:34,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34 WrapperNode [2022-11-16 12:04:34,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:04:34,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:04:34,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:04:34,615 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:04:34,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (1/1) ... [2022-11-16 12:04:34,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (1/1) ... [2022-11-16 12:04:34,703 INFO L138 Inliner]: procedures = 524, calls = 63, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 127 [2022-11-16 12:04:34,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:04:34,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:04:34,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:04:34,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:04:34,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (1/1) ... [2022-11-16 12:04:34,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (1/1) ... [2022-11-16 12:04:34,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (1/1) ... [2022-11-16 12:04:34,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (1/1) ... [2022-11-16 12:04:34,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (1/1) ... [2022-11-16 12:04:34,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (1/1) ... [2022-11-16 12:04:34,738 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (1/1) ... [2022-11-16 12:04:34,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (1/1) ... [2022-11-16 12:04:34,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:04:34,747 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:04:34,747 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:04:34,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:04:34,748 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (1/1) ... [2022-11-16 12:04:34,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:04:34,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:34,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:04:34,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:04:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2022-11-16 12:04:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2022-11-16 12:04:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2022-11-16 12:04:34,852 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2022-11-16 12:04:34,852 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2022-11-16 12:04:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2022-11-16 12:04:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:04:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:04:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 12:04:34,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:04:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:04:34,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:04:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:04:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2022-11-16 12:04:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure time [2022-11-16 12:04:34,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:04:34,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:04:34,856 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 12:04:35,164 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:04:35,166 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:04:35,714 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:04:35,724 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:04:35,725 INFO L300 CfgBuilder]: Removed 19 assume(true) statements. [2022-11-16 12:04:35,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:04:35 BoogieIcfgContainer [2022-11-16 12:04:35,728 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:04:35,730 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:04:35,730 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:04:35,734 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:04:35,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:04:33" (1/3) ... [2022-11-16 12:04:35,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e03517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:04:35, skipping insertion in model container [2022-11-16 12:04:35,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:34" (2/3) ... [2022-11-16 12:04:35,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e03517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:04:35, skipping insertion in model container [2022-11-16 12:04:35,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:04:35" (3/3) ... [2022-11-16 12:04:35,739 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2022-11-16 12:04:35,750 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:04:35,761 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:04:35,762 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 12:04:35,762 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:04:35,887 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:04:35,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 240 transitions, 496 flow [2022-11-16 12:04:36,055 INFO L130 PetriNetUnfolder]: 32/238 cut-off events. [2022-11-16 12:04:36,055 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:04:36,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 238 events. 32/238 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 493 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 144. Up to 5 conditions per place. [2022-11-16 12:04:36,063 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 240 transitions, 496 flow [2022-11-16 12:04:36,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 212 transitions, 433 flow [2022-11-16 12:04:36,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:04:36,100 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;@35bb3825, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:04:36,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-11-16 12:04:36,111 INFO L130 PetriNetUnfolder]: 0/54 cut-off events. [2022-11-16 12:04:36,111 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:04:36,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:36,112 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] [2022-11-16 12:04:36,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:36,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:36,118 INFO L85 PathProgramCache]: Analyzing trace with hash 953922273, now seen corresponding path program 1 times [2022-11-16 12:04:36,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:36,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416022989] [2022-11-16 12:04:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:36,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:36,599 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 12:04:36,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:36,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416022989] [2022-11-16 12:04:36,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416022989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:36,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:36,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:04:36,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401007305] [2022-11-16 12:04:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:36,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:04:36,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:36,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:04:36,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:04:36,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 240 [2022-11-16 12:04:36,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 212 transitions, 433 flow. Second operand has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 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 12:04:36,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:36,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 240 [2022-11-16 12:04:36,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:36,724 INFO L130 PetriNetUnfolder]: 4/180 cut-off events. [2022-11-16 12:04:36,724 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-16 12:04:36,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199 conditions, 180 events. 4/180 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 374 event pairs, 0 based on Foata normal form. 20/180 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2022-11-16 12:04:36,728 INFO L137 encePairwiseOnDemand]: 221/240 looper letters, 9 selfloop transitions, 1 changer transitions 0/180 dead transitions. [2022-11-16 12:04:36,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 180 transitions, 389 flow [2022-11-16 12:04:36,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:04:36,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:04:36,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 628 transitions. [2022-11-16 12:04:36,745 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8722222222222222 [2022-11-16 12:04:36,746 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 628 transitions. [2022-11-16 12:04:36,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 628 transitions. [2022-11-16 12:04:36,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:36,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 628 transitions. [2022-11-16 12:04:36,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.33333333333334) internal successors, (628), 3 states have internal predecessors, (628), 0 states have call successors, (0), 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 12:04:36,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 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 12:04:36,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 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 12:04:36,768 INFO L175 Difference]: Start difference. First operand has 191 places, 212 transitions, 433 flow. Second operand 3 states and 628 transitions. [2022-11-16 12:04:36,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 180 transitions, 389 flow [2022-11-16 12:04:36,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 180 transitions, 384 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:04:36,777 INFO L231 Difference]: Finished difference. Result has 182 places, 180 transitions, 366 flow [2022-11-16 12:04:36,780 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=182, PETRI_TRANSITIONS=180} [2022-11-16 12:04:36,784 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, -9 predicate places. [2022-11-16 12:04:36,784 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 180 transitions, 366 flow [2022-11-16 12:04:36,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 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 12:04:36,785 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:36,785 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] [2022-11-16 12:04:36,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:04:36,786 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:36,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:36,787 INFO L85 PathProgramCache]: Analyzing trace with hash -493180128, now seen corresponding path program 1 times [2022-11-16 12:04:36,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:36,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738892888] [2022-11-16 12:04:36,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:36,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:37,021 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 12:04:37,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:37,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738892888] [2022-11-16 12:04:37,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738892888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:37,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:37,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:04:37,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494002923] [2022-11-16 12:04:37,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:37,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:37,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:37,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:37,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:37,031 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 240 [2022-11-16 12:04:37,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 180 transitions, 366 flow. Second operand has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 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 12:04:37,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:37,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 240 [2022-11-16 12:04:37,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:37,158 INFO L130 PetriNetUnfolder]: 4/179 cut-off events. [2022-11-16 12:04:37,159 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 12:04:37,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 179 events. 4/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 374 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 134. Up to 8 conditions per place. [2022-11-16 12:04:37,166 INFO L137 encePairwiseOnDemand]: 236/240 looper letters, 9 selfloop transitions, 3 changer transitions 0/179 dead transitions. [2022-11-16 12:04:37,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 179 transitions, 388 flow [2022-11-16 12:04:37,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:04:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 998 transitions. [2022-11-16 12:04:37,173 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8316666666666667 [2022-11-16 12:04:37,174 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 998 transitions. [2022-11-16 12:04:37,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 998 transitions. [2022-11-16 12:04:37,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:37,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 998 transitions. [2022-11-16 12:04:37,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.6) internal successors, (998), 5 states have internal predecessors, (998), 0 states have call successors, (0), 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 12:04:37,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 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 12:04:37,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 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 12:04:37,185 INFO L175 Difference]: Start difference. First operand has 182 places, 180 transitions, 366 flow. Second operand 5 states and 998 transitions. [2022-11-16 12:04:37,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 179 transitions, 388 flow [2022-11-16 12:04:37,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 179 transitions, 387 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:04:37,195 INFO L231 Difference]: Finished difference. Result has 184 places, 179 transitions, 369 flow [2022-11-16 12:04:37,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=369, PETRI_PLACES=184, PETRI_TRANSITIONS=179} [2022-11-16 12:04:37,196 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, -7 predicate places. [2022-11-16 12:04:37,197 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 179 transitions, 369 flow [2022-11-16 12:04:37,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.0) internal successors, (796), 4 states have internal predecessors, (796), 0 states have call successors, (0), 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 12:04:37,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:37,199 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 12:04:37,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:04:37,200 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:37,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash -243845913, now seen corresponding path program 1 times [2022-11-16 12:04:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:37,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824437979] [2022-11-16 12:04:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:37,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:37,580 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 12:04:37,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:37,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824437979] [2022-11-16 12:04:37,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824437979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:37,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:37,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:04:37,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663519909] [2022-11-16 12:04:37,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:37,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:37,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:37,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:37,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:37,587 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 240 [2022-11-16 12:04:37,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 179 transitions, 369 flow. Second operand has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 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 12:04:37,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:37,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 240 [2022-11-16 12:04:37,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:37,787 INFO L130 PetriNetUnfolder]: 70/584 cut-off events. [2022-11-16 12:04:37,787 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-11-16 12:04:37,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 584 events. 70/584 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3154 event pairs, 2 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 689. Up to 93 conditions per place. [2022-11-16 12:04:37,792 INFO L137 encePairwiseOnDemand]: 232/240 looper letters, 28 selfloop transitions, 4 changer transitions 0/196 dead transitions. [2022-11-16 12:04:37,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 196 transitions, 474 flow [2022-11-16 12:04:37,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:04:37,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1023 transitions. [2022-11-16 12:04:37,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8525 [2022-11-16 12:04:37,799 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1023 transitions. [2022-11-16 12:04:37,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1023 transitions. [2022-11-16 12:04:37,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:37,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1023 transitions. [2022-11-16 12:04:37,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.6) internal successors, (1023), 5 states have internal predecessors, (1023), 0 states have call successors, (0), 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 12:04:37,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 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 12:04:37,807 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 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 12:04:37,808 INFO L175 Difference]: Start difference. First operand has 184 places, 179 transitions, 369 flow. Second operand 5 states and 1023 transitions. [2022-11-16 12:04:37,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 196 transitions, 474 flow [2022-11-16 12:04:37,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 196 transitions, 469 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:04:37,817 INFO L231 Difference]: Finished difference. Result has 188 places, 182 transitions, 402 flow [2022-11-16 12:04:37,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=402, PETRI_PLACES=188, PETRI_TRANSITIONS=182} [2022-11-16 12:04:37,820 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, -3 predicate places. [2022-11-16 12:04:37,821 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 182 transitions, 402 flow [2022-11-16 12:04:37,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 198.0) internal successors, (792), 4 states have internal predecessors, (792), 0 states have call successors, (0), 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 12:04:37,822 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:37,822 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] [2022-11-16 12:04:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:04:37,823 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:37,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:37,826 INFO L85 PathProgramCache]: Analyzing trace with hash -798597707, now seen corresponding path program 1 times [2022-11-16 12:04:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:37,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403575772] [2022-11-16 12:04:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:37,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:38,130 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 12:04:38,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:38,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403575772] [2022-11-16 12:04:38,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403575772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:38,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:38,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:04:38,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665456069] [2022-11-16 12:04:38,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:38,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:38,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:38,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:38,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:38,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 240 [2022-11-16 12:04:38,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 182 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 0 states have call successors, (0), 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 12:04:38,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:38,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 240 [2022-11-16 12:04:38,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:38,289 INFO L130 PetriNetUnfolder]: 40/353 cut-off events. [2022-11-16 12:04:38,289 INFO L131 PetriNetUnfolder]: For 25/27 co-relation queries the response was YES. [2022-11-16 12:04:38,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 353 events. 40/353 cut-off events. For 25/27 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1568 event pairs, 26 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 484. Up to 45 conditions per place. [2022-11-16 12:04:38,293 INFO L137 encePairwiseOnDemand]: 233/240 looper letters, 19 selfloop transitions, 4 changer transitions 0/191 dead transitions. [2022-11-16 12:04:38,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 191 transitions, 472 flow [2022-11-16 12:04:38,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:38,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:04:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1016 transitions. [2022-11-16 12:04:38,297 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8466666666666667 [2022-11-16 12:04:38,298 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1016 transitions. [2022-11-16 12:04:38,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1016 transitions. [2022-11-16 12:04:38,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:38,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1016 transitions. [2022-11-16 12:04:38,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.2) internal successors, (1016), 5 states have internal predecessors, (1016), 0 states have call successors, (0), 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 12:04:38,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 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 12:04:38,309 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 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 12:04:38,310 INFO L175 Difference]: Start difference. First operand has 188 places, 182 transitions, 402 flow. Second operand 5 states and 1016 transitions. [2022-11-16 12:04:38,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 191 transitions, 472 flow [2022-11-16 12:04:38,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 191 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:04:38,317 INFO L231 Difference]: Finished difference. Result has 194 places, 185 transitions, 432 flow [2022-11-16 12:04:38,324 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=194, PETRI_TRANSITIONS=185} [2022-11-16 12:04:38,326 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 3 predicate places. [2022-11-16 12:04:38,326 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 185 transitions, 432 flow [2022-11-16 12:04:38,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 0 states have call successors, (0), 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 12:04:38,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:38,327 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, 1] [2022-11-16 12:04:38,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:04:38,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:38,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1757708111, now seen corresponding path program 1 times [2022-11-16 12:04:38,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:38,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437349318] [2022-11-16 12:04:38,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:38,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:38,564 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 12:04:38,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:38,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437349318] [2022-11-16 12:04:38,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437349318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:38,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:38,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:04:38,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095951992] [2022-11-16 12:04:38,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:38,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:38,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:38,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:38,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:38,569 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 240 [2022-11-16 12:04:38,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 185 transitions, 432 flow. Second operand has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 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 12:04:38,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:38,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 240 [2022-11-16 12:04:38,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:38,781 INFO L130 PetriNetUnfolder]: 74/598 cut-off events. [2022-11-16 12:04:38,781 INFO L131 PetriNetUnfolder]: For 78/91 co-relation queries the response was YES. [2022-11-16 12:04:38,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 598 events. 74/598 cut-off events. For 78/91 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3703 event pairs, 32 based on Foata normal form. 0/526 useless extension candidates. Maximal degree in co-relation 793. Up to 70 conditions per place. [2022-11-16 12:04:38,787 INFO L137 encePairwiseOnDemand]: 234/240 looper letters, 15 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2022-11-16 12:04:38,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 193 transitions, 489 flow [2022-11-16 12:04:38,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:38,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:04:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1026 transitions. [2022-11-16 12:04:38,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.855 [2022-11-16 12:04:38,791 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1026 transitions. [2022-11-16 12:04:38,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1026 transitions. [2022-11-16 12:04:38,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:38,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1026 transitions. [2022-11-16 12:04:38,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.2) internal successors, (1026), 5 states have internal predecessors, (1026), 0 states have call successors, (0), 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 12:04:38,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 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 12:04:38,800 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 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 12:04:38,800 INFO L175 Difference]: Start difference. First operand has 194 places, 185 transitions, 432 flow. Second operand 5 states and 1026 transitions. [2022-11-16 12:04:38,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 193 transitions, 489 flow [2022-11-16 12:04:38,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 193 transitions, 487 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:04:38,808 INFO L231 Difference]: Finished difference. Result has 200 places, 188 transitions, 460 flow [2022-11-16 12:04:38,809 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=460, PETRI_PLACES=200, PETRI_TRANSITIONS=188} [2022-11-16 12:04:38,812 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 9 predicate places. [2022-11-16 12:04:38,812 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 188 transitions, 460 flow [2022-11-16 12:04:38,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 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 12:04:38,813 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:38,813 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:38,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:04:38,814 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:38,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:38,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1834772389, now seen corresponding path program 1 times [2022-11-16 12:04:38,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:38,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226513265] [2022-11-16 12:04:38,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:38,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:39,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:39,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:39,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226513265] [2022-11-16 12:04:39,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226513265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:39,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819818538] [2022-11-16 12:04:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:39,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:39,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:39,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:39,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:04:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:39,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:04:39,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:39,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:39,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:39,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819818538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:39,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:04:39,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:04:39,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480830402] [2022-11-16 12:04:39,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:39,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:04:39,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:39,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:04:39,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:04:39,730 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 240 [2022-11-16 12:04:39,733 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 188 transitions, 460 flow. Second operand has 12 states, 12 states have (on average 199.0) internal successors, (2388), 12 states have internal predecessors, (2388), 0 states have call successors, (0), 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 12:04:39,733 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:39,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 240 [2022-11-16 12:04:39,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:40,926 INFO L130 PetriNetUnfolder]: 620/3206 cut-off events. [2022-11-16 12:04:40,926 INFO L131 PetriNetUnfolder]: For 917/1214 co-relation queries the response was YES. [2022-11-16 12:04:40,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5594 conditions, 3206 events. 620/3206 cut-off events. For 917/1214 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 29083 event pairs, 24 based on Foata normal form. 158/3059 useless extension candidates. Maximal degree in co-relation 5526. Up to 363 conditions per place. [2022-11-16 12:04:40,958 INFO L137 encePairwiseOnDemand]: 231/240 looper letters, 83 selfloop transitions, 47 changer transitions 0/300 dead transitions. [2022-11-16 12:04:40,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 300 transitions, 1097 flow [2022-11-16 12:04:40,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:04:40,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:04:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4877 transitions. [2022-11-16 12:04:40,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8467013888888889 [2022-11-16 12:04:40,969 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4877 transitions. [2022-11-16 12:04:40,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4877 transitions. [2022-11-16 12:04:40,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:40,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4877 transitions. [2022-11-16 12:04:40,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 203.20833333333334) internal successors, (4877), 24 states have internal predecessors, (4877), 0 states have call successors, (0), 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 12:04:40,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 240.0) internal successors, (6000), 25 states have internal predecessors, (6000), 0 states have call successors, (0), 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 12:04:40,998 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 240.0) internal successors, (6000), 25 states have internal predecessors, (6000), 0 states have call successors, (0), 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 12:04:40,998 INFO L175 Difference]: Start difference. First operand has 200 places, 188 transitions, 460 flow. Second operand 24 states and 4877 transitions. [2022-11-16 12:04:40,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 300 transitions, 1097 flow [2022-11-16 12:04:41,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 300 transitions, 1095 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:04:41,008 INFO L231 Difference]: Finished difference. Result has 240 places, 229 transitions, 868 flow [2022-11-16 12:04:41,008 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=458, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=868, PETRI_PLACES=240, PETRI_TRANSITIONS=229} [2022-11-16 12:04:41,009 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 49 predicate places. [2022-11-16 12:04:41,009 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 229 transitions, 868 flow [2022-11-16 12:04:41,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 199.0) internal successors, (2388), 12 states have internal predecessors, (2388), 0 states have call successors, (0), 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 12:04:41,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:41,011 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:41,023 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 12:04:41,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:41,218 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:41,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:41,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1043368485, now seen corresponding path program 1 times [2022-11-16 12:04:41,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:41,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288906939] [2022-11-16 12:04:41,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:41,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:41,572 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:41,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:41,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288906939] [2022-11-16 12:04:41,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288906939] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:41,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845725389] [2022-11-16 12:04:41,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:41,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:41,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:41,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:41,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:04:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:41,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:04:41,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:41,822 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:41,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845725389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:41,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:04:41,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:04:41,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720378764] [2022-11-16 12:04:41,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:41,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:04:41,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:41,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:04:41,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:04:41,826 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 240 [2022-11-16 12:04:41,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 229 transitions, 868 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 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 12:04:41,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:41,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 240 [2022-11-16 12:04:41,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:42,403 INFO L130 PetriNetUnfolder]: 324/2041 cut-off events. [2022-11-16 12:04:42,404 INFO L131 PetriNetUnfolder]: For 6279/6583 co-relation queries the response was YES. [2022-11-16 12:04:42,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4045 conditions, 2041 events. 324/2041 cut-off events. For 6279/6583 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 16181 event pairs, 76 based on Foata normal form. 154/1966 useless extension candidates. Maximal degree in co-relation 3958. Up to 448 conditions per place. [2022-11-16 12:04:42,428 INFO L137 encePairwiseOnDemand]: 235/240 looper letters, 19 selfloop transitions, 10 changer transitions 0/199 dead transitions. [2022-11-16 12:04:42,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 199 transitions, 673 flow [2022-11-16 12:04:42,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:04:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:04:42,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 808 transitions. [2022-11-16 12:04:42,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8416666666666667 [2022-11-16 12:04:42,432 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 808 transitions. [2022-11-16 12:04:42,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 808 transitions. [2022-11-16 12:04:42,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:42,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 808 transitions. [2022-11-16 12:04:42,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 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 12:04:42,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 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 12:04:42,441 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 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 12:04:42,441 INFO L175 Difference]: Start difference. First operand has 240 places, 229 transitions, 868 flow. Second operand 4 states and 808 transitions. [2022-11-16 12:04:42,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 199 transitions, 673 flow [2022-11-16 12:04:42,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 199 transitions, 625 flow, removed 20 selfloop flow, removed 12 redundant places. [2022-11-16 12:04:42,463 INFO L231 Difference]: Finished difference. Result has 219 places, 195 transitions, 555 flow [2022-11-16 12:04:42,463 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=555, PETRI_PLACES=219, PETRI_TRANSITIONS=195} [2022-11-16 12:04:42,464 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 28 predicate places. [2022-11-16 12:04:42,464 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 195 transitions, 555 flow [2022-11-16 12:04:42,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 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 12:04:42,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:42,465 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, 1, 1] [2022-11-16 12:04:42,475 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 12:04:42,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:42,672 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:42,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:42,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1066270015, now seen corresponding path program 1 times [2022-11-16 12:04:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:42,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428282235] [2022-11-16 12:04:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:42,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:04:42,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:42,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428282235] [2022-11-16 12:04:42,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428282235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:42,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:42,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:04:42,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982501436] [2022-11-16 12:04:42,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:42,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:42,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:42,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:42,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:42,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 240 [2022-11-16 12:04:42,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 195 transitions, 555 flow. Second operand has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 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 12:04:42,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:42,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 240 [2022-11-16 12:04:42,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:43,074 INFO L130 PetriNetUnfolder]: 79/720 cut-off events. [2022-11-16 12:04:43,074 INFO L131 PetriNetUnfolder]: For 782/793 co-relation queries the response was YES. [2022-11-16 12:04:43,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 720 events. 79/720 cut-off events. For 782/793 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4103 event pairs, 17 based on Foata normal form. 8/676 useless extension candidates. Maximal degree in co-relation 1381. Up to 72 conditions per place. [2022-11-16 12:04:43,084 INFO L137 encePairwiseOnDemand]: 234/240 looper letters, 12 selfloop transitions, 8 changer transitions 0/198 dead transitions. [2022-11-16 12:04:43,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 198 transitions, 605 flow [2022-11-16 12:04:43,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:43,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:04:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1008 transitions. [2022-11-16 12:04:43,088 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84 [2022-11-16 12:04:43,088 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1008 transitions. [2022-11-16 12:04:43,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1008 transitions. [2022-11-16 12:04:43,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:43,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1008 transitions. [2022-11-16 12:04:43,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 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 12:04:43,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 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 12:04:43,096 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 240.0) internal successors, (1440), 6 states have internal predecessors, (1440), 0 states have call successors, (0), 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 12:04:43,096 INFO L175 Difference]: Start difference. First operand has 219 places, 195 transitions, 555 flow. Second operand 5 states and 1008 transitions. [2022-11-16 12:04:43,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 198 transitions, 605 flow [2022-11-16 12:04:43,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 198 transitions, 585 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:04:43,104 INFO L231 Difference]: Finished difference. Result has 220 places, 195 transitions, 555 flow [2022-11-16 12:04:43,105 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=531, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=555, PETRI_PLACES=220, PETRI_TRANSITIONS=195} [2022-11-16 12:04:43,108 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 29 predicate places. [2022-11-16 12:04:43,108 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 195 transitions, 555 flow [2022-11-16 12:04:43,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.0) internal successors, (804), 4 states have internal predecessors, (804), 0 states have call successors, (0), 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 12:04:43,109 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:43,110 INFO L209 CegarLoopForPetriNet]: trace histogram [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 12:04:43,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:04:43,110 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting counter_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:43,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1305368645, now seen corresponding path program 1 times [2022-11-16 12:04:43,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:43,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038562883] [2022-11-16 12:04:43,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:43,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:43,327 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 12:04:43,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:43,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038562883] [2022-11-16 12:04:43,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038562883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:43,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238778622] [2022-11-16 12:04:43,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:43,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:43,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:43,330 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:43,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:04:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:43,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:04:43,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:43,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:43,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238778622] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:43,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:04:43,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-16 12:04:43,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892015320] [2022-11-16 12:04:43,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:43,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:04:43,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:43,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:04:43,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:04:43,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 240 [2022-11-16 12:04:43,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 195 transitions, 555 flow. Second operand has 5 states, 5 states have (on average 200.6) internal successors, (1003), 5 states have internal predecessors, (1003), 0 states have call successors, (0), 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 12:04:43,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:43,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 240 [2022-11-16 12:04:43,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:43,735 INFO L130 PetriNetUnfolder]: 76/711 cut-off events. [2022-11-16 12:04:43,735 INFO L131 PetriNetUnfolder]: For 807/818 co-relation queries the response was YES. [2022-11-16 12:04:43,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480 conditions, 711 events. 76/711 cut-off events. For 807/818 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3941 event pairs, 9 based on Foata normal form. 8/667 useless extension candidates. Maximal degree in co-relation 1403. Up to 84 conditions per place. [2022-11-16 12:04:43,745 INFO L137 encePairwiseOnDemand]: 236/240 looper letters, 15 selfloop transitions, 5 changer transitions 0/198 dead transitions. [2022-11-16 12:04:43,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 198 transitions, 609 flow [2022-11-16 12:04:43,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:04:43,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:04:43,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 809 transitions. [2022-11-16 12:04:43,747 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8427083333333333 [2022-11-16 12:04:43,748 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 809 transitions. [2022-11-16 12:04:43,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 809 transitions. [2022-11-16 12:04:43,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:43,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 809 transitions. [2022-11-16 12:04:43,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 202.25) internal successors, (809), 4 states have internal predecessors, (809), 0 states have call successors, (0), 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 12:04:43,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 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 12:04:43,753 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 240.0) internal successors, (1200), 5 states have internal predecessors, (1200), 0 states have call successors, (0), 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 12:04:43,753 INFO L175 Difference]: Start difference. First operand has 220 places, 195 transitions, 555 flow. Second operand 4 states and 809 transitions. [2022-11-16 12:04:43,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 198 transitions, 609 flow [2022-11-16 12:04:43,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 198 transitions, 596 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:04:43,761 INFO L231 Difference]: Finished difference. Result has 220 places, 195 transitions, 558 flow [2022-11-16 12:04:43,761 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=539, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=220, PETRI_TRANSITIONS=195} [2022-11-16 12:04:43,762 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 29 predicate places. [2022-11-16 12:04:43,762 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 195 transitions, 558 flow [2022-11-16 12:04:43,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 200.6) internal successors, (1003), 5 states have internal predecessors, (1003), 0 states have call successors, (0), 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 12:04:43,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:43,763 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:43,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:43,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 12:04:43,970 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:43,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:43,971 INFO L85 PathProgramCache]: Analyzing trace with hash 539732992, now seen corresponding path program 1 times [2022-11-16 12:04:43,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:43,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047620513] [2022-11-16 12:04:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:43,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:44,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:44,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047620513] [2022-11-16 12:04:44,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047620513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:44,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043554522] [2022-11-16 12:04:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:44,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:44,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:44,219 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:44,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:04:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:44,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:04:44,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:44,471 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:44,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:44,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043554522] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:44,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:04:44,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:04:44,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133577164] [2022-11-16 12:04:44,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:44,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:04:44,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:44,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:04:44,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:04:44,568 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 240 [2022-11-16 12:04:44,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 195 transitions, 558 flow. Second operand has 12 states, 12 states have (on average 202.91666666666666) internal successors, (2435), 12 states have internal predecessors, (2435), 0 states have call successors, (0), 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 12:04:44,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:44,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 240 [2022-11-16 12:04:44,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:45,194 INFO L130 PetriNetUnfolder]: 211/1556 cut-off events. [2022-11-16 12:04:45,197 INFO L131 PetriNetUnfolder]: For 2662/3085 co-relation queries the response was YES. [2022-11-16 12:04:45,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2655 conditions, 1556 events. 211/1556 cut-off events. For 2662/3085 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13375 event pairs, 20 based on Foata normal form. 20/1345 useless extension candidates. Maximal degree in co-relation 2577. Up to 150 conditions per place. [2022-11-16 12:04:45,218 INFO L137 encePairwiseOnDemand]: 233/240 looper letters, 31 selfloop transitions, 18 changer transitions 0/230 dead transitions. [2022-11-16 12:04:45,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 230 transitions, 764 flow [2022-11-16 12:04:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:04:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:04:45,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3670 transitions. [2022-11-16 12:04:45,228 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8495370370370371 [2022-11-16 12:04:45,228 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3670 transitions. [2022-11-16 12:04:45,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3670 transitions. [2022-11-16 12:04:45,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:45,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3670 transitions. [2022-11-16 12:04:45,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 203.88888888888889) internal successors, (3670), 18 states have internal predecessors, (3670), 0 states have call successors, (0), 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 12:04:45,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 240.0) internal successors, (4560), 19 states have internal predecessors, (4560), 0 states have call successors, (0), 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 12:04:45,249 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 240.0) internal successors, (4560), 19 states have internal predecessors, (4560), 0 states have call successors, (0), 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 12:04:45,249 INFO L175 Difference]: Start difference. First operand has 220 places, 195 transitions, 558 flow. Second operand 18 states and 3670 transitions. [2022-11-16 12:04:45,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 230 transitions, 764 flow [2022-11-16 12:04:45,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 230 transitions, 755 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:04:45,258 INFO L231 Difference]: Finished difference. Result has 239 places, 207 transitions, 655 flow [2022-11-16 12:04:45,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=655, PETRI_PLACES=239, PETRI_TRANSITIONS=207} [2022-11-16 12:04:45,260 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 48 predicate places. [2022-11-16 12:04:45,260 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 207 transitions, 655 flow [2022-11-16 12:04:45,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 202.91666666666666) internal successors, (2435), 12 states have internal predecessors, (2435), 0 states have call successors, (0), 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 12:04:45,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:45,262 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, 1, 1, 1] [2022-11-16 12:04:45,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:45,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:04:45,469 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:45,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:45,470 INFO L85 PathProgramCache]: Analyzing trace with hash -448145762, now seen corresponding path program 1 times [2022-11-16 12:04:45,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:45,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679997131] [2022-11-16 12:04:45,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:45,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:45,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:45,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679997131] [2022-11-16 12:04:45,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679997131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:45,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667951681] [2022-11-16 12:04:45,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:45,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:45,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:45,702 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:45,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:04:45,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:45,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:04:45,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:45,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:45,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:45,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667951681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:45,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:04:45,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:04:45,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441852082] [2022-11-16 12:04:45,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:45,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:04:45,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:45,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:04:45,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:04:45,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 240 [2022-11-16 12:04:45,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 207 transitions, 655 flow. Second operand has 6 states, 6 states have (on average 202.83333333333334) internal successors, (1217), 6 states have internal predecessors, (1217), 0 states have call successors, (0), 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 12:04:45,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:45,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 240 [2022-11-16 12:04:45,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:46,500 INFO L130 PetriNetUnfolder]: 191/1512 cut-off events. [2022-11-16 12:04:46,501 INFO L131 PetriNetUnfolder]: For 2849/3272 co-relation queries the response was YES. [2022-11-16 12:04:46,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 1512 events. 191/1512 cut-off events. For 2849/3272 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 12896 event pairs, 20 based on Foata normal form. 26/1305 useless extension candidates. Maximal degree in co-relation 2618. Up to 182 conditions per place. [2022-11-16 12:04:46,521 INFO L137 encePairwiseOnDemand]: 235/240 looper letters, 18 selfloop transitions, 11 changer transitions 0/210 dead transitions. [2022-11-16 12:04:46,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 210 transitions, 707 flow [2022-11-16 12:04:46,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:04:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:04:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1428 transitions. [2022-11-16 12:04:46,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-11-16 12:04:46,526 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1428 transitions. [2022-11-16 12:04:46,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1428 transitions. [2022-11-16 12:04:46,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:46,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1428 transitions. [2022-11-16 12:04:46,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 204.0) internal successors, (1428), 7 states have internal predecessors, (1428), 0 states have call successors, (0), 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 12:04:46,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 240.0) internal successors, (1920), 8 states have internal predecessors, (1920), 0 states have call successors, (0), 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 12:04:46,535 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 240.0) internal successors, (1920), 8 states have internal predecessors, (1920), 0 states have call successors, (0), 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 12:04:46,536 INFO L175 Difference]: Start difference. First operand has 239 places, 207 transitions, 655 flow. Second operand 7 states and 1428 transitions. [2022-11-16 12:04:46,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 210 transitions, 707 flow [2022-11-16 12:04:46,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 210 transitions, 675 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 12:04:46,550 INFO L231 Difference]: Finished difference. Result has 235 places, 203 transitions, 618 flow [2022-11-16 12:04:46,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=618, PETRI_PLACES=235, PETRI_TRANSITIONS=203} [2022-11-16 12:04:46,552 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 44 predicate places. [2022-11-16 12:04:46,552 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 203 transitions, 618 flow [2022-11-16 12:04:46,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.83333333333334) internal successors, (1217), 6 states have internal predecessors, (1217), 0 states have call successors, (0), 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 12:04:46,553 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:46,553 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:46,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:46,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 12:04:46,761 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:46,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:46,761 INFO L85 PathProgramCache]: Analyzing trace with hash 568636391, now seen corresponding path program 2 times [2022-11-16 12:04:46,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:46,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968589640] [2022-11-16 12:04:46,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:46,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:47,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:47,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968589640] [2022-11-16 12:04:47,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968589640] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:47,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683816409] [2022-11-16 12:04:47,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:04:47,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:47,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:47,309 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:47,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:04:47,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:04:47,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:04:47,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:04:47,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:47,680 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:47,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:47,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683816409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:47,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:04:47,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-16 12:04:47,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217787539] [2022-11-16 12:04:47,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:47,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:04:47,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:47,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:04:47,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:04:47,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 240 [2022-11-16 12:04:47,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 203 transitions, 618 flow. Second operand has 24 states, 24 states have (on average 199.25) internal successors, (4782), 24 states have internal predecessors, (4782), 0 states have call successors, (0), 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 12:04:47,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:47,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 240 [2022-11-16 12:04:47,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:50,905 INFO L130 PetriNetUnfolder]: 1461/8998 cut-off events. [2022-11-16 12:04:50,906 INFO L131 PetriNetUnfolder]: For 23160/24571 co-relation queries the response was YES. [2022-11-16 12:04:51,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16680 conditions, 8998 events. 1461/8998 cut-off events. For 23160/24571 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 103969 event pairs, 34 based on Foata normal form. 262/8255 useless extension candidates. Maximal degree in co-relation 16598. Up to 580 conditions per place. [2022-11-16 12:04:51,040 INFO L137 encePairwiseOnDemand]: 233/240 looper letters, 131 selfloop transitions, 32 changer transitions 0/341 dead transitions. [2022-11-16 12:04:51,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 341 transitions, 1402 flow [2022-11-16 12:04:51,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:04:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 12:04:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6491 transitions. [2022-11-16 12:04:51,061 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8451822916666667 [2022-11-16 12:04:51,062 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6491 transitions. [2022-11-16 12:04:51,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6491 transitions. [2022-11-16 12:04:51,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:51,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6491 transitions. [2022-11-16 12:04:51,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 202.84375) internal successors, (6491), 32 states have internal predecessors, (6491), 0 states have call successors, (0), 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 12:04:51,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 240.0) internal successors, (7920), 33 states have internal predecessors, (7920), 0 states have call successors, (0), 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 12:04:51,106 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 240.0) internal successors, (7920), 33 states have internal predecessors, (7920), 0 states have call successors, (0), 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 12:04:51,106 INFO L175 Difference]: Start difference. First operand has 235 places, 203 transitions, 618 flow. Second operand 32 states and 6491 transitions. [2022-11-16 12:04:51,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 341 transitions, 1402 flow [2022-11-16 12:04:51,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 341 transitions, 1388 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:04:51,141 INFO L231 Difference]: Finished difference. Result has 280 places, 222 transitions, 868 flow [2022-11-16 12:04:51,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=868, PETRI_PLACES=280, PETRI_TRANSITIONS=222} [2022-11-16 12:04:51,143 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 89 predicate places. [2022-11-16 12:04:51,143 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 222 transitions, 868 flow [2022-11-16 12:04:51,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 199.25) internal successors, (4782), 24 states have internal predecessors, (4782), 0 states have call successors, (0), 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 12:04:51,145 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:51,146 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:51,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:51,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 12:04:51,352 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:51,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:51,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1033943281, now seen corresponding path program 2 times [2022-11-16 12:04:51,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:51,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924844734] [2022-11-16 12:04:51,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:51,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:52,096 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:52,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:52,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924844734] [2022-11-16 12:04:52,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924844734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:52,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584780404] [2022-11-16 12:04:52,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:04:52,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:52,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:52,099 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:52,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:04:52,295 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:04:52,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:04:52,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 12:04:52,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:52,466 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:52,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 0 proven. 138 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:52,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584780404] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:52,752 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:04:52,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-16 12:04:52,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206249200] [2022-11-16 12:04:52,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:52,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 12:04:52,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:52,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 12:04:52,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-16 12:04:52,764 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 240 [2022-11-16 12:04:52,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 222 transitions, 868 flow. Second operand has 24 states, 24 states have (on average 203.20833333333334) internal successors, (4877), 24 states have internal predecessors, (4877), 0 states have call successors, (0), 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 12:04:52,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:52,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 240 [2022-11-16 12:04:52,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:55,465 INFO L130 PetriNetUnfolder]: 815/5966 cut-off events. [2022-11-16 12:04:55,465 INFO L131 PetriNetUnfolder]: For 65100/71846 co-relation queries the response was YES. [2022-11-16 12:04:55,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11168 conditions, 5966 events. 815/5966 cut-off events. For 65100/71846 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 69313 event pairs, 44 based on Foata normal form. 79/5035 useless extension candidates. Maximal degree in co-relation 11067. Up to 616 conditions per place. [2022-11-16 12:04:55,543 INFO L137 encePairwiseOnDemand]: 234/240 looper letters, 57 selfloop transitions, 32 changer transitions 0/289 dead transitions. [2022-11-16 12:04:55,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 289 transitions, 1288 flow [2022-11-16 12:04:55,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:04:55,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 12:04:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 6527 transitions. [2022-11-16 12:04:55,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8498697916666667 [2022-11-16 12:04:55,557 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 6527 transitions. [2022-11-16 12:04:55,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 6527 transitions. [2022-11-16 12:04:55,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:55,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 6527 transitions. [2022-11-16 12:04:55,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 203.96875) internal successors, (6527), 32 states have internal predecessors, (6527), 0 states have call successors, (0), 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 12:04:55,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 240.0) internal successors, (7920), 33 states have internal predecessors, (7920), 0 states have call successors, (0), 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 12:04:55,589 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 240.0) internal successors, (7920), 33 states have internal predecessors, (7920), 0 states have call successors, (0), 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 12:04:55,589 INFO L175 Difference]: Start difference. First operand has 280 places, 222 transitions, 868 flow. Second operand 32 states and 6527 transitions. [2022-11-16 12:04:55,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 289 transitions, 1288 flow [2022-11-16 12:04:55,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 289 transitions, 1226 flow, removed 20 selfloop flow, removed 11 redundant places. [2022-11-16 12:04:55,673 INFO L231 Difference]: Finished difference. Result has 307 places, 241 transitions, 998 flow [2022-11-16 12:04:55,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=998, PETRI_PLACES=307, PETRI_TRANSITIONS=241} [2022-11-16 12:04:55,674 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 116 predicate places. [2022-11-16 12:04:55,675 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 241 transitions, 998 flow [2022-11-16 12:04:55,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 203.20833333333334) internal successors, (4877), 24 states have internal predecessors, (4877), 0 states have call successors, (0), 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 12:04:55,677 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:55,677 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:04:55,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:55,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:55,890 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:04:55,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:55,891 INFO L85 PathProgramCache]: Analyzing trace with hash -693091737, now seen corresponding path program 3 times [2022-11-16 12:04:55,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:55,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020541086] [2022-11-16 12:04:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:55,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:57,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:57,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020541086] [2022-11-16 12:04:57,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020541086] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:57,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190406370] [2022-11-16 12:04:57,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:04:57,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:57,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:57,290 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:57,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:04:57,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-16 12:04:57,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:04:57,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 12:04:57,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:57,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:58,811 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:58,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190406370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:58,812 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:04:58,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-11-16 12:04:58,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309737113] [2022-11-16 12:04:58,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:58,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 12:04:58,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:58,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 12:04:58,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 12:04:58,829 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 240 [2022-11-16 12:04:58,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 241 transitions, 998 flow. Second operand has 48 states, 48 states have (on average 199.375) internal successors, (9570), 48 states have internal predecessors, (9570), 0 states have call successors, (0), 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 12:04:58,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:58,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 240 [2022-11-16 12:04:58,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:15,971 INFO L130 PetriNetUnfolder]: 6375/37870 cut-off events. [2022-11-16 12:05:15,971 INFO L131 PetriNetUnfolder]: For 491904/512757 co-relation queries the response was YES. [2022-11-16 12:05:16,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74639 conditions, 37870 events. 6375/37870 cut-off events. For 491904/512757 co-relation queries the response was YES. Maximal size of possible extension queue 1212. Compared 526666 event pairs, 76 based on Foata normal form. 958/34235 useless extension candidates. Maximal degree in co-relation 74531. Up to 2728 conditions per place. [2022-11-16 12:05:16,577 INFO L137 encePairwiseOnDemand]: 233/240 looper letters, 275 selfloop transitions, 68 changer transitions 0/540 dead transitions. [2022-11-16 12:05:16,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 540 transitions, 2765 flow [2022-11-16 12:05:16,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-16 12:05:16,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-11-16 12:05:16,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 13787 transitions. [2022-11-16 12:05:16,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8447916666666667 [2022-11-16 12:05:16,605 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 13787 transitions. [2022-11-16 12:05:16,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 13787 transitions. [2022-11-16 12:05:16,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:16,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 13787 transitions. [2022-11-16 12:05:16,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 202.75) internal successors, (13787), 68 states have internal predecessors, (13787), 0 states have call successors, (0), 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 12:05:16,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 240.0) internal successors, (16560), 69 states have internal predecessors, (16560), 0 states have call successors, (0), 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 12:05:16,687 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 240.0) internal successors, (16560), 69 states have internal predecessors, (16560), 0 states have call successors, (0), 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 12:05:16,688 INFO L175 Difference]: Start difference. First operand has 307 places, 241 transitions, 998 flow. Second operand 68 states and 13787 transitions. [2022-11-16 12:05:16,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 540 transitions, 2765 flow [2022-11-16 12:05:17,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 540 transitions, 2727 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-16 12:05:17,010 INFO L231 Difference]: Finished difference. Result has 400 places, 278 transitions, 1521 flow [2022-11-16 12:05:17,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=1521, PETRI_PLACES=400, PETRI_TRANSITIONS=278} [2022-11-16 12:05:17,011 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 209 predicate places. [2022-11-16 12:05:17,012 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 278 transitions, 1521 flow [2022-11-16 12:05:17,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 199.375) internal successors, (9570), 48 states have internal predecessors, (9570), 0 states have call successors, (0), 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 12:05:17,015 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:17,016 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:17,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:17,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 12:05:17,225 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:05:17,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:17,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1786071377, now seen corresponding path program 3 times [2022-11-16 12:05:17,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:17,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774610704] [2022-11-16 12:05:17,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:17,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:18,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:18,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774610704] [2022-11-16 12:05:18,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774610704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:18,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012217609] [2022-11-16 12:05:18,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:05:18,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:18,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:18,843 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:18,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:05:19,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-16 12:05:19,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:05:19,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-16 12:05:19,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:19,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:20,501 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 795 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:20,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012217609] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:20,502 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:05:20,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2022-11-16 12:05:20,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852254207] [2022-11-16 12:05:20,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:20,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-16 12:05:20,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:20,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-16 12:05:20,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=599, Invalid=1657, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 12:05:20,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 240 [2022-11-16 12:05:20,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 278 transitions, 1521 flow. Second operand has 48 states, 48 states have (on average 203.35416666666666) internal successors, (9761), 48 states have internal predecessors, (9761), 0 states have call successors, (0), 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 12:05:20,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:20,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 240 [2022-11-16 12:05:20,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:36,576 INFO L130 PetriNetUnfolder]: 3359/23726 cut-off events. [2022-11-16 12:05:36,576 INFO L131 PetriNetUnfolder]: For 1009864/1057987 co-relation queries the response was YES. [2022-11-16 12:05:36,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47223 conditions, 23726 events. 3359/23726 cut-off events. For 1009864/1057987 co-relation queries the response was YES. Maximal size of possible extension queue 1344. Compared 349880 event pairs, 92 based on Foata normal form. 304/19733 useless extension candidates. Maximal degree in co-relation 47077. Up to 2668 conditions per place. [2022-11-16 12:05:37,050 INFO L137 encePairwiseOnDemand]: 234/240 looper letters, 117 selfloop transitions, 68 changer transitions 0/422 dead transitions. [2022-11-16 12:05:37,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 422 transitions, 2492 flow [2022-11-16 12:05:37,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-16 12:05:37,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-11-16 12:05:37,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 13865 transitions. [2022-11-16 12:05:37,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8495710784313726 [2022-11-16 12:05:37,082 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 13865 transitions. [2022-11-16 12:05:37,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 13865 transitions. [2022-11-16 12:05:37,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:37,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 13865 transitions. [2022-11-16 12:05:37,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 203.89705882352942) internal successors, (13865), 68 states have internal predecessors, (13865), 0 states have call successors, (0), 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 12:05:37,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 240.0) internal successors, (16560), 69 states have internal predecessors, (16560), 0 states have call successors, (0), 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 12:05:37,153 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 240.0) internal successors, (16560), 69 states have internal predecessors, (16560), 0 states have call successors, (0), 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 12:05:37,153 INFO L175 Difference]: Start difference. First operand has 400 places, 278 transitions, 1521 flow. Second operand 68 states and 13865 transitions. [2022-11-16 12:05:37,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 422 transitions, 2492 flow [2022-11-16 12:05:38,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 422 transitions, 2358 flow, removed 38 selfloop flow, removed 29 redundant places. [2022-11-16 12:05:38,435 INFO L231 Difference]: Finished difference. Result has 451 places, 315 transitions, 1804 flow [2022-11-16 12:05:38,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=240, PETRI_DIFFERENCE_MINUEND_FLOW=1387, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=1804, PETRI_PLACES=451, PETRI_TRANSITIONS=315} [2022-11-16 12:05:38,437 INFO L288 CegarLoopForPetriNet]: 191 programPoint places, 260 predicate places. [2022-11-16 12:05:38,437 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 315 transitions, 1804 flow [2022-11-16 12:05:38,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 203.35416666666666) internal successors, (9761), 48 states have internal predecessors, (9761), 0 states have call successors, (0), 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 12:05:38,440 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:38,440 INFO L209 CegarLoopForPetriNet]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:05:38,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:05:38,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:38,653 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-11-16 12:05:38,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:38,653 INFO L85 PathProgramCache]: Analyzing trace with hash 471236455, now seen corresponding path program 4 times [2022-11-16 12:05:38,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:38,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046884551] [2022-11-16 12:05:38,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:38,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:38,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 0 proven. 2607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:41,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:41,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046884551] [2022-11-16 12:05:41,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046884551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:41,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928090966] [2022-11-16 12:05:41,715 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:05:41,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:41,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:41,719 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:41,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e71b171b-8ef2-48ce-a313-efd47d784ada/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:05:41,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:05:41,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:05:41,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-16 12:05:42,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 0 proven. 2607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:42,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 0 proven. 2607 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:05:45,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928090966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:45,766 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:05:45,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2022-11-16 12:05:45,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274554794] [2022-11-16 12:05:45,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:45,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-16 12:05:45,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:45,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-16 12:05:45,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2351, Invalid=6769, Unknown=0, NotChecked=0, Total=9120 [2022-11-16 12:05:45,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 240 [2022-11-16 12:05:45,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 315 transitions, 1804 flow. Second operand has 96 states, 96 states have (on average 199.4375) internal successors, (19146), 96 states have internal predecessors, (19146), 0 states have call successors, (0), 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 12:05:45,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:45,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 240 [2022-11-16 12:05:45,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand