./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c --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_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/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_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/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_7e3729a4-6cc9-4453-88d1-5e6750d678a6/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 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 --- 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 10:54:26,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 10:54:27,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 10:54:27,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 10:54:27,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 10:54:27,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 10:54:27,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 10:54:27,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 10:54:27,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 10:54:27,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 10:54:27,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 10:54:27,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 10:54:27,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 10:54:27,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 10:54:27,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 10:54:27,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 10:54:27,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 10:54:27,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 10:54:27,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 10:54:27,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 10:54:27,054 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 10:54:27,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 10:54:27,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 10:54:27,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 10:54:27,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 10:54:27,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 10:54:27,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 10:54:27,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 10:54:27,066 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 10:54:27,067 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 10:54:27,068 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 10:54:27,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 10:54:27,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 10:54:27,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 10:54:27,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 10:54:27,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 10:54:27,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 10:54:27,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 10:54:27,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 10:54:27,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 10:54:27,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 10:54:27,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 10:54:27,108 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 10:54:27,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 10:54:27,109 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 10:54:27,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 10:54:27,110 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 10:54:27,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 10:54:27,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 10:54:27,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 10:54:27,112 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 10:54:27,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 10:54:27,112 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 10:54:27,113 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 10:54:27,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 10:54:27,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 10:54:27,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 10:54:27,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 10:54:27,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 10:54:27,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 10:54:27,115 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 10:54:27,115 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 10:54:27,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 10:54:27,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 10:54:27,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 10:54:27,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 10:54:27,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 10:54:27,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 10:54:27,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:27,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 10:54:27,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 10:54:27,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 10:54:27,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 10:54:27,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 10:54:27,119 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 10:54:27,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 10:54:27,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 10:54:27,120 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_7e3729a4-6cc9-4453-88d1-5e6750d678a6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1a172ae6dd3a5207c1a2580ce55cc24497fcf78586be62b7482a56f18aa6beb2 [2022-11-16 10:54:27,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 10:54:27,481 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 10:54:27,485 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 10:54:27,487 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 10:54:27,488 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 10:54:27,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-16 10:54:27,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/data/0dc4810fe/c14fed20f7074c0b88cdeea19fba7928/FLAG2d140c848 [2022-11-16 10:54:28,061 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 10:54:28,062 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/sv-benchmarks/c/weaver/array-eq-symm.wvr.c [2022-11-16 10:54:28,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/data/0dc4810fe/c14fed20f7074c0b88cdeea19fba7928/FLAG2d140c848 [2022-11-16 10:54:28,416 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/data/0dc4810fe/c14fed20f7074c0b88cdeea19fba7928 [2022-11-16 10:54:28,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 10:54:28,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 10:54:28,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:28,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 10:54:28,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 10:54:28,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edfae59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28, skipping insertion in model container [2022-11-16 10:54:28,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 10:54:28,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 10:54:28,696 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-16 10:54:28,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:28,713 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 10:54:28,736 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/sv-benchmarks/c/weaver/array-eq-symm.wvr.c[2251,2264] [2022-11-16 10:54:28,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 10:54:28,755 INFO L208 MainTranslator]: Completed translation [2022-11-16 10:54:28,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28 WrapperNode [2022-11-16 10:54:28,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 10:54:28,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:28,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 10:54:28,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 10:54:28,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,801 INFO L138 Inliner]: procedures = 23, calls = 29, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 116 [2022-11-16 10:54:28,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 10:54:28,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 10:54:28,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 10:54:28,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 10:54:28,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,817 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,832 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 10:54:28,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 10:54:28,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 10:54:28,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 10:54:28,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (1/1) ... [2022-11-16 10:54:28,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 10:54:28,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:28,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 10:54:28,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 10:54:28,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 10:54:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 10:54:28,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 10:54:28,965 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 10:54:28,965 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 10:54:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 10:54:28,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 10:54:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 10:54:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 10:54:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 10:54:28,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 10:54:28,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 10:54:28,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 10:54:28,970 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 10:54:29,118 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 10:54:29,120 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 10:54:29,507 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 10:54:29,524 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 10:54:29,525 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 10:54:29,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:29 BoogieIcfgContainer [2022-11-16 10:54:29,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 10:54:29,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 10:54:29,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 10:54:29,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 10:54:29,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 10:54:28" (1/3) ... [2022-11-16 10:54:29,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7448c28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:29, skipping insertion in model container [2022-11-16 10:54:29,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 10:54:28" (2/3) ... [2022-11-16 10:54:29,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7448c28f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 10:54:29, skipping insertion in model container [2022-11-16 10:54:29,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:29" (3/3) ... [2022-11-16 10:54:29,566 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-symm.wvr.c [2022-11-16 10:54:29,576 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 10:54:29,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 10:54:29,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 10:54:29,589 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 10:54:29,708 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 10:54:29,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 189 transitions, 394 flow [2022-11-16 10:54:29,874 INFO L130 PetriNetUnfolder]: 15/187 cut-off events. [2022-11-16 10:54:29,874 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 10:54:29,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 187 events. 15/187 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 143. Up to 3 conditions per place. [2022-11-16 10:54:29,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 189 transitions, 394 flow [2022-11-16 10:54:29,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 168 transitions, 345 flow [2022-11-16 10:54:29,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 10:54:29,925 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;@26d9921d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 10:54:29,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-11-16 10:54:29,944 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-11-16 10:54:29,944 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 10:54:29,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:29,945 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] [2022-11-16 10:54:29,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:29,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:29,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1764182683, now seen corresponding path program 1 times [2022-11-16 10:54:29,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:29,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582603153] [2022-11-16 10:54:29,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:29,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:30,539 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 10:54:30,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:30,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582603153] [2022-11-16 10:54:30,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582603153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:30,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:30,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:30,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156522617] [2022-11-16 10:54:30,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:30,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:30,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:30,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:30,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:30,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 189 [2022-11-16 10:54:30,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 168 transitions, 345 flow. Second operand has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 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 10:54:30,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:30,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 189 [2022-11-16 10:54:30,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:30,818 INFO L130 PetriNetUnfolder]: 11/248 cut-off events. [2022-11-16 10:54:30,818 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-16 10:54:30,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309 conditions, 248 events. 11/248 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 513 event pairs, 0 based on Foata normal form. 12/232 useless extension candidates. Maximal degree in co-relation 243. Up to 29 conditions per place. [2022-11-16 10:54:30,825 INFO L137 encePairwiseOnDemand]: 168/189 looper letters, 38 selfloop transitions, 9 changer transitions 4/180 dead transitions. [2022-11-16 10:54:30,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 180 transitions, 472 flow [2022-11-16 10:54:30,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:30,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 818 transitions. [2022-11-16 10:54:30,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8656084656084656 [2022-11-16 10:54:30,842 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 818 transitions. [2022-11-16 10:54:30,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 818 transitions. [2022-11-16 10:54:30,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:30,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 818 transitions. [2022-11-16 10:54:30,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.6) internal successors, (818), 5 states have internal predecessors, (818), 0 states have call successors, (0), 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 10:54:30,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 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 10:54:30,865 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 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 10:54:30,866 INFO L175 Difference]: Start difference. First operand has 161 places, 168 transitions, 345 flow. Second operand 5 states and 818 transitions. [2022-11-16 10:54:30,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 180 transitions, 472 flow [2022-11-16 10:54:30,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 180 transitions, 462 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 10:54:30,876 INFO L231 Difference]: Finished difference. Result has 165 places, 163 transitions, 383 flow [2022-11-16 10:54:30,879 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=383, PETRI_PLACES=165, PETRI_TRANSITIONS=163} [2022-11-16 10:54:30,882 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 4 predicate places. [2022-11-16 10:54:30,883 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 163 transitions, 383 flow [2022-11-16 10:54:30,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 0 states have call successors, (0), 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 10:54:30,884 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:30,884 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:30,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 10:54:30,885 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:30,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:30,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1886939101, now seen corresponding path program 1 times [2022-11-16 10:54:30,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:30,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488274368] [2022-11-16 10:54:30,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:30,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:31,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:31,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488274368] [2022-11-16 10:54:31,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488274368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:31,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660242097] [2022-11-16 10:54:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:31,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:31,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:31,135 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:31,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 10:54:31,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:31,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:54:31,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:31,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:31,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660242097] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:31,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:54:31,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 10:54:31,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779439341] [2022-11-16 10:54:31,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:31,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 10:54:31,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:31,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 10:54:31,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 10:54:31,577 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 189 [2022-11-16 10:54:31,581 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 163 transitions, 383 flow. Second operand has 12 states, 12 states have (on average 153.66666666666666) internal successors, (1844), 12 states have internal predecessors, (1844), 0 states have call successors, (0), 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 10:54:31,581 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:31,581 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 189 [2022-11-16 10:54:31,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:32,183 INFO L130 PetriNetUnfolder]: 26/512 cut-off events. [2022-11-16 10:54:32,184 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-16 10:54:32,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 512 events. 26/512 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1778 event pairs, 0 based on Foata normal form. 6/468 useless extension candidates. Maximal degree in co-relation 356. Up to 22 conditions per place. [2022-11-16 10:54:32,197 INFO L137 encePairwiseOnDemand]: 174/189 looper letters, 71 selfloop transitions, 40 changer transitions 0/240 dead transitions. [2022-11-16 10:54:32,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 240 transitions, 825 flow [2022-11-16 10:54:32,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 10:54:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 10:54:32,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2835 transitions. [2022-11-16 10:54:32,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-11-16 10:54:32,208 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2835 transitions. [2022-11-16 10:54:32,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2835 transitions. [2022-11-16 10:54:32,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:32,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2835 transitions. [2022-11-16 10:54:32,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 157.5) internal successors, (2835), 18 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:32,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 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 10:54:32,234 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 189.0) internal successors, (3591), 19 states have internal predecessors, (3591), 0 states have call successors, (0), 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 10:54:32,235 INFO L175 Difference]: Start difference. First operand has 165 places, 163 transitions, 383 flow. Second operand 18 states and 2835 transitions. [2022-11-16 10:54:32,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 240 transitions, 825 flow [2022-11-16 10:54:32,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 240 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:32,245 INFO L231 Difference]: Finished difference. Result has 181 places, 190 transitions, 616 flow [2022-11-16 10:54:32,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=616, PETRI_PLACES=181, PETRI_TRANSITIONS=190} [2022-11-16 10:54:32,246 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 20 predicate places. [2022-11-16 10:54:32,247 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 190 transitions, 616 flow [2022-11-16 10:54:32,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 153.66666666666666) internal successors, (1844), 12 states have internal predecessors, (1844), 0 states have call successors, (0), 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 10:54:32,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:32,249 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 10:54:32,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:32,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:32,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:32,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:32,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1634429729, now seen corresponding path program 1 times [2022-11-16 10:54:32,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:32,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852831309] [2022-11-16 10:54:32,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:32,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:32,738 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:32,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:32,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852831309] [2022-11-16 10:54:32,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852831309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:32,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437944476] [2022-11-16 10:54:32,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:32,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:32,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:32,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:32,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 10:54:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:32,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:54:32,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:32,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:54:32,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437944476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:32,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:54:32,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 10:54:32,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920695673] [2022-11-16 10:54:32,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:32,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:54:32,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:32,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:54:32,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:54:32,965 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 189 [2022-11-16 10:54:32,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 190 transitions, 616 flow. Second operand has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 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 10:54:32,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:32,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 189 [2022-11-16 10:54:32,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:33,177 INFO L130 PetriNetUnfolder]: 26/504 cut-off events. [2022-11-16 10:54:33,178 INFO L131 PetriNetUnfolder]: For 126/126 co-relation queries the response was YES. [2022-11-16 10:54:33,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 504 events. 26/504 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1727 event pairs, 0 based on Foata normal form. 8/462 useless extension candidates. Maximal degree in co-relation 555. Up to 44 conditions per place. [2022-11-16 10:54:33,182 INFO L137 encePairwiseOnDemand]: 178/189 looper letters, 39 selfloop transitions, 27 changer transitions 0/195 dead transitions. [2022-11-16 10:54:33,182 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 195 transitions, 728 flow [2022-11-16 10:54:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:54:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:54:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1104 transitions. [2022-11-16 10:54:33,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8344671201814059 [2022-11-16 10:54:33,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1104 transitions. [2022-11-16 10:54:33,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1104 transitions. [2022-11-16 10:54:33,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:33,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1104 transitions. [2022-11-16 10:54:33,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 157.71428571428572) internal successors, (1104), 7 states have internal predecessors, (1104), 0 states have call successors, (0), 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 10:54:33,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 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 10:54:33,194 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 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 10:54:33,194 INFO L175 Difference]: Start difference. First operand has 181 places, 190 transitions, 616 flow. Second operand 7 states and 1104 transitions. [2022-11-16 10:54:33,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 195 transitions, 728 flow [2022-11-16 10:54:33,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 195 transitions, 654 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:33,201 INFO L231 Difference]: Finished difference. Result has 176 places, 182 transitions, 542 flow [2022-11-16 10:54:33,202 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=542, PETRI_PLACES=176, PETRI_TRANSITIONS=182} [2022-11-16 10:54:33,203 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 15 predicate places. [2022-11-16 10:54:33,203 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 182 transitions, 542 flow [2022-11-16 10:54:33,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 153.33333333333334) internal successors, (920), 6 states have internal predecessors, (920), 0 states have call successors, (0), 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 10:54:33,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:33,204 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 10:54:33,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:33,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:33,409 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:33,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:33,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1696542949, now seen corresponding path program 2 times [2022-11-16 10:54:33,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:33,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906740905] [2022-11-16 10:54:33,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:33,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:33,785 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 10:54:33,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:33,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906740905] [2022-11-16 10:54:33,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906740905] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:33,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882038755] [2022-11-16 10:54:33,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:54:33,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:33,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:33,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:33,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 10:54:33,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:54:33,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:54:33,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:54:33,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 10:54:34,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 10:54:34,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882038755] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:34,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:54:34,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 10:54:34,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281417960] [2022-11-16 10:54:34,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:34,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 10:54:34,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:34,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 10:54:34,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 10:54:34,410 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 189 [2022-11-16 10:54:34,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 182 transitions, 542 flow. Second operand has 18 states, 18 states have (on average 135.61111111111111) internal successors, (2441), 18 states have internal predecessors, (2441), 0 states have call successors, (0), 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 10:54:34,414 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:34,414 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 189 [2022-11-16 10:54:34,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:35,923 INFO L130 PetriNetUnfolder]: 148/1260 cut-off events. [2022-11-16 10:54:35,923 INFO L131 PetriNetUnfolder]: For 161/203 co-relation queries the response was YES. [2022-11-16 10:54:35,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 1260 events. 148/1260 cut-off events. For 161/203 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7001 event pairs, 56 based on Foata normal form. 4/1040 useless extension candidates. Maximal degree in co-relation 1188. Up to 56 conditions per place. [2022-11-16 10:54:35,963 INFO L137 encePairwiseOnDemand]: 169/189 looper letters, 121 selfloop transitions, 65 changer transitions 0/296 dead transitions. [2022-11-16 10:54:35,963 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 296 transitions, 1225 flow [2022-11-16 10:54:35,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 10:54:35,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 10:54:35,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 6658 transitions. [2022-11-16 10:54:35,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.718928841377821 [2022-11-16 10:54:35,980 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 6658 transitions. [2022-11-16 10:54:35,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 6658 transitions. [2022-11-16 10:54:35,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:35,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 6658 transitions. [2022-11-16 10:54:36,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 135.87755102040816) internal successors, (6658), 49 states have internal predecessors, (6658), 0 states have call successors, (0), 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 10:54:36,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 189.0) internal successors, (9450), 50 states have internal predecessors, (9450), 0 states have call successors, (0), 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 10:54:36,024 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 189.0) internal successors, (9450), 50 states have internal predecessors, (9450), 0 states have call successors, (0), 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 10:54:36,024 INFO L175 Difference]: Start difference. First operand has 176 places, 182 transitions, 542 flow. Second operand 49 states and 6658 transitions. [2022-11-16 10:54:36,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 296 transitions, 1225 flow [2022-11-16 10:54:36,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 296 transitions, 1182 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 10:54:36,032 INFO L231 Difference]: Finished difference. Result has 222 places, 207 transitions, 757 flow [2022-11-16 10:54:36,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=757, PETRI_PLACES=222, PETRI_TRANSITIONS=207} [2022-11-16 10:54:36,034 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 61 predicate places. [2022-11-16 10:54:36,034 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 207 transitions, 757 flow [2022-11-16 10:54:36,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 135.61111111111111) internal successors, (2441), 18 states have internal predecessors, (2441), 0 states have call successors, (0), 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 10:54:36,035 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:36,036 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:36,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:36,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:36,241 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:36,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:36,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1030998590, now seen corresponding path program 1 times [2022-11-16 10:54:36,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:36,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875872794] [2022-11-16 10:54:36,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:36,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:36,383 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 10:54:36,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:36,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875872794] [2022-11-16 10:54:36,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875872794] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:36,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:36,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:36,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020542524] [2022-11-16 10:54:36,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:36,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:36,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:36,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:36,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:36,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 189 [2022-11-16 10:54:36,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 207 transitions, 757 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 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 10:54:36,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:36,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 189 [2022-11-16 10:54:36,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:36,686 INFO L130 PetriNetUnfolder]: 197/1197 cut-off events. [2022-11-16 10:54:36,687 INFO L131 PetriNetUnfolder]: For 166/194 co-relation queries the response was YES. [2022-11-16 10:54:36,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2116 conditions, 1197 events. 197/1197 cut-off events. For 166/194 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 7273 event pairs, 28 based on Foata normal form. 0/1057 useless extension candidates. Maximal degree in co-relation 1849. Up to 253 conditions per place. [2022-11-16 10:54:36,695 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 24 selfloop transitions, 4 changer transitions 0/220 dead transitions. [2022-11-16 10:54:36,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 220 transitions, 846 flow [2022-11-16 10:54:36,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:36,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 840 transitions. [2022-11-16 10:54:36,697 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-11-16 10:54:36,698 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 840 transitions. [2022-11-16 10:54:36,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 840 transitions. [2022-11-16 10:54:36,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:36,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 840 transitions. [2022-11-16 10:54:36,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.0) internal successors, (840), 5 states have internal predecessors, (840), 0 states have call successors, (0), 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 10:54:36,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 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 10:54:36,703 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 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 10:54:36,704 INFO L175 Difference]: Start difference. First operand has 222 places, 207 transitions, 757 flow. Second operand 5 states and 840 transitions. [2022-11-16 10:54:36,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 220 transitions, 846 flow [2022-11-16 10:54:36,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 220 transitions, 763 flow, removed 9 selfloop flow, removed 15 redundant places. [2022-11-16 10:54:36,712 INFO L231 Difference]: Finished difference. Result has 214 places, 210 transitions, 704 flow [2022-11-16 10:54:36,712 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=704, PETRI_PLACES=214, PETRI_TRANSITIONS=210} [2022-11-16 10:54:36,715 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 53 predicate places. [2022-11-16 10:54:36,715 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 210 transitions, 704 flow [2022-11-16 10:54:36,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 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 10:54:36,716 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:36,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:36,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 10:54:36,717 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:36,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:36,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1766105785, now seen corresponding path program 1 times [2022-11-16 10:54:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:36,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445383298] [2022-11-16 10:54:36,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:36,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:36,850 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 10:54:36,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:36,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445383298] [2022-11-16 10:54:36,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445383298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:36,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:36,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 10:54:36,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474900450] [2022-11-16 10:54:36,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:36,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 10:54:36,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:36,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 10:54:36,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 10:54:36,857 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 189 [2022-11-16 10:54:36,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 210 transitions, 704 flow. Second operand has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 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 10:54:36,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:36,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 189 [2022-11-16 10:54:36,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:37,266 INFO L130 PetriNetUnfolder]: 358/1701 cut-off events. [2022-11-16 10:54:37,266 INFO L131 PetriNetUnfolder]: For 379/386 co-relation queries the response was YES. [2022-11-16 10:54:37,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2669 conditions, 1701 events. 358/1701 cut-off events. For 379/386 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 13353 event pairs, 56 based on Foata normal form. 0/1393 useless extension candidates. Maximal degree in co-relation 2422. Up to 407 conditions per place. [2022-11-16 10:54:37,280 INFO L137 encePairwiseOnDemand]: 183/189 looper letters, 23 selfloop transitions, 4 changer transitions 0/222 dead transitions. [2022-11-16 10:54:37,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 222 transitions, 785 flow [2022-11-16 10:54:37,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 10:54:37,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 10:54:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 839 transitions. [2022-11-16 10:54:37,283 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8878306878306879 [2022-11-16 10:54:37,283 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 839 transitions. [2022-11-16 10:54:37,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 839 transitions. [2022-11-16 10:54:37,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:37,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 839 transitions. [2022-11-16 10:54:37,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.8) internal successors, (839), 5 states have internal predecessors, (839), 0 states have call successors, (0), 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 10:54:37,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 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 10:54:37,289 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 189.0) internal successors, (1134), 6 states have internal predecessors, (1134), 0 states have call successors, (0), 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 10:54:37,289 INFO L175 Difference]: Start difference. First operand has 214 places, 210 transitions, 704 flow. Second operand 5 states and 839 transitions. [2022-11-16 10:54:37,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 222 transitions, 785 flow [2022-11-16 10:54:37,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 222 transitions, 783 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:37,301 INFO L231 Difference]: Finished difference. Result has 220 places, 213 transitions, 732 flow [2022-11-16 10:54:37,302 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=732, PETRI_PLACES=220, PETRI_TRANSITIONS=213} [2022-11-16 10:54:37,305 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 59 predicate places. [2022-11-16 10:54:37,305 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 213 transitions, 732 flow [2022-11-16 10:54:37,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 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 10:54:37,306 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:37,306 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:37,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 10:54:37,307 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:37,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:37,307 INFO L85 PathProgramCache]: Analyzing trace with hash -328088979, now seen corresponding path program 1 times [2022-11-16 10:54:37,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:37,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409816575] [2022-11-16 10:54:37,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:37,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 10:54:37,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:37,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409816575] [2022-11-16 10:54:37,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409816575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:37,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:37,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:37,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9647671] [2022-11-16 10:54:37,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:37,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:54:37,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:37,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:54:37,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:54:37,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 189 [2022-11-16 10:54:37,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 213 transitions, 732 flow. Second operand has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 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 10:54:37,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:37,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 189 [2022-11-16 10:54:37,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:38,614 INFO L130 PetriNetUnfolder]: 855/4938 cut-off events. [2022-11-16 10:54:38,615 INFO L131 PetriNetUnfolder]: For 828/898 co-relation queries the response was YES. [2022-11-16 10:54:38,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7989 conditions, 4938 events. 855/4938 cut-off events. For 828/898 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 45217 event pairs, 266 based on Foata normal form. 0/4287 useless extension candidates. Maximal degree in co-relation 6841. Up to 603 conditions per place. [2022-11-16 10:54:38,647 INFO L137 encePairwiseOnDemand]: 177/189 looper letters, 102 selfloop transitions, 23 changer transitions 1/258 dead transitions. [2022-11-16 10:54:38,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 258 transitions, 1153 flow [2022-11-16 10:54:38,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 10:54:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 10:54:38,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1462 transitions. [2022-11-16 10:54:38,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7735449735449735 [2022-11-16 10:54:38,652 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1462 transitions. [2022-11-16 10:54:38,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1462 transitions. [2022-11-16 10:54:38,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:38,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1462 transitions. [2022-11-16 10:54:38,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.2) internal successors, (1462), 10 states have internal predecessors, (1462), 0 states have call successors, (0), 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 10:54:38,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 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 10:54:38,661 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 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 10:54:38,662 INFO L175 Difference]: Start difference. First operand has 220 places, 213 transitions, 732 flow. Second operand 10 states and 1462 transitions. [2022-11-16 10:54:38,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 258 transitions, 1153 flow [2022-11-16 10:54:38,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 258 transitions, 1151 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 10:54:38,673 INFO L231 Difference]: Finished difference. Result has 230 places, 214 transitions, 788 flow [2022-11-16 10:54:38,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=788, PETRI_PLACES=230, PETRI_TRANSITIONS=214} [2022-11-16 10:54:38,674 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 69 predicate places. [2022-11-16 10:54:38,674 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 214 transitions, 788 flow [2022-11-16 10:54:38,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 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 10:54:38,676 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:38,676 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:38,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 10:54:38,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:38,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:38,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1272256164, now seen corresponding path program 1 times [2022-11-16 10:54:38,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:38,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599893326] [2022-11-16 10:54:38,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:38,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 10:54:38,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:38,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599893326] [2022-11-16 10:54:38,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599893326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:38,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:38,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:38,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920979369] [2022-11-16 10:54:38,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:38,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:54:38,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:38,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:54:38,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:54:38,845 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 189 [2022-11-16 10:54:38,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 214 transitions, 788 flow. Second operand has 7 states, 7 states have (on average 142.85714285714286) internal successors, (1000), 7 states have internal predecessors, (1000), 0 states have call successors, (0), 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 10:54:38,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:38,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 189 [2022-11-16 10:54:38,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:39,731 INFO L130 PetriNetUnfolder]: 750/3587 cut-off events. [2022-11-16 10:54:39,731 INFO L131 PetriNetUnfolder]: For 1154/1217 co-relation queries the response was YES. [2022-11-16 10:54:39,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6216 conditions, 3587 events. 750/3587 cut-off events. For 1154/1217 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 30257 event pairs, 259 based on Foata normal form. 0/3237 useless extension candidates. Maximal degree in co-relation 5324. Up to 638 conditions per place. [2022-11-16 10:54:39,763 INFO L137 encePairwiseOnDemand]: 177/189 looper letters, 89 selfloop transitions, 23 changer transitions 12/256 dead transitions. [2022-11-16 10:54:39,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 256 transitions, 1199 flow [2022-11-16 10:54:39,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 10:54:39,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 10:54:39,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1460 transitions. [2022-11-16 10:54:39,770 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7724867724867724 [2022-11-16 10:54:39,770 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1460 transitions. [2022-11-16 10:54:39,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1460 transitions. [2022-11-16 10:54:39,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:39,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1460 transitions. [2022-11-16 10:54:39,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 146.0) internal successors, (1460), 10 states have internal predecessors, (1460), 0 states have call successors, (0), 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 10:54:39,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 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 10:54:39,783 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 189.0) internal successors, (2079), 11 states have internal predecessors, (2079), 0 states have call successors, (0), 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 10:54:39,784 INFO L175 Difference]: Start difference. First operand has 230 places, 214 transitions, 788 flow. Second operand 10 states and 1460 transitions. [2022-11-16 10:54:39,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 256 transitions, 1199 flow [2022-11-16 10:54:39,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 256 transitions, 1168 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 10:54:39,797 INFO L231 Difference]: Finished difference. Result has 234 places, 214 transitions, 809 flow [2022-11-16 10:54:39,797 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=809, PETRI_PLACES=234, PETRI_TRANSITIONS=214} [2022-11-16 10:54:39,801 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 73 predicate places. [2022-11-16 10:54:39,801 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 214 transitions, 809 flow [2022-11-16 10:54:39,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.85714285714286) internal successors, (1000), 7 states have internal predecessors, (1000), 0 states have call successors, (0), 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 10:54:39,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:39,802 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:39,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 10:54:39,803 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:39,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:39,803 INFO L85 PathProgramCache]: Analyzing trace with hash -910210257, now seen corresponding path program 1 times [2022-11-16 10:54:39,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:39,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725369151] [2022-11-16 10:54:39,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:39,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:40,029 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 10:54:40,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:40,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725369151] [2022-11-16 10:54:40,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725369151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:40,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:40,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:40,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960652887] [2022-11-16 10:54:40,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:40,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:54:40,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:40,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:54:40,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:54:40,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 189 [2022-11-16 10:54:40,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 214 transitions, 809 flow. Second operand has 7 states, 7 states have (on average 143.28571428571428) internal successors, (1003), 7 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 10:54:40,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:40,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 189 [2022-11-16 10:54:40,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:40,960 INFO L130 PetriNetUnfolder]: 671/3835 cut-off events. [2022-11-16 10:54:40,960 INFO L131 PetriNetUnfolder]: For 1162/1221 co-relation queries the response was YES. [2022-11-16 10:54:40,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6593 conditions, 3835 events. 671/3835 cut-off events. For 1162/1221 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 32651 event pairs, 204 based on Foata normal form. 6/3584 useless extension candidates. Maximal degree in co-relation 5690. Up to 556 conditions per place. [2022-11-16 10:54:40,994 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 82 selfloop transitions, 15 changer transitions 1/230 dead transitions. [2022-11-16 10:54:40,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 230 transitions, 1050 flow [2022-11-16 10:54:40,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:40,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1172 transitions. [2022-11-16 10:54:41,000 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7751322751322751 [2022-11-16 10:54:41,002 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1172 transitions. [2022-11-16 10:54:41,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1172 transitions. [2022-11-16 10:54:41,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:41,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1172 transitions. [2022-11-16 10:54:41,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 146.5) internal successors, (1172), 8 states have internal predecessors, (1172), 0 states have call successors, (0), 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 10:54:41,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 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 10:54:41,014 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 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 10:54:41,014 INFO L175 Difference]: Start difference. First operand has 234 places, 214 transitions, 809 flow. Second operand 8 states and 1172 transitions. [2022-11-16 10:54:41,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 230 transitions, 1050 flow [2022-11-16 10:54:41,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 230 transitions, 1004 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 10:54:41,091 INFO L231 Difference]: Finished difference. Result has 233 places, 214 transitions, 796 flow [2022-11-16 10:54:41,092 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=796, PETRI_PLACES=233, PETRI_TRANSITIONS=214} [2022-11-16 10:54:41,092 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 72 predicate places. [2022-11-16 10:54:41,092 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 214 transitions, 796 flow [2022-11-16 10:54:41,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.28571428571428) internal successors, (1003), 7 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 10:54:41,093 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:41,093 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, 1, 1, 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 10:54:41,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 10:54:41,093 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:41,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:41,094 INFO L85 PathProgramCache]: Analyzing trace with hash 162224286, now seen corresponding path program 1 times [2022-11-16 10:54:41,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:41,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483183030] [2022-11-16 10:54:41,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:41,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 10:54:41,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:41,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483183030] [2022-11-16 10:54:41,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483183030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:54:41,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 10:54:41,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 10:54:41,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609255922] [2022-11-16 10:54:41,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:54:41,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 10:54:41,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:41,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 10:54:41,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 10:54:41,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 189 [2022-11-16 10:54:41,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 214 transitions, 796 flow. Second operand has 7 states, 7 states have (on average 143.42857142857142) internal successors, (1004), 7 states have internal predecessors, (1004), 0 states have call successors, (0), 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 10:54:41,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:41,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 189 [2022-11-16 10:54:41,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:42,143 INFO L130 PetriNetUnfolder]: 668/3346 cut-off events. [2022-11-16 10:54:42,144 INFO L131 PetriNetUnfolder]: For 1476/1534 co-relation queries the response was YES. [2022-11-16 10:54:42,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6011 conditions, 3346 events. 668/3346 cut-off events. For 1476/1534 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 27736 event pairs, 228 based on Foata normal form. 3/3135 useless extension candidates. Maximal degree in co-relation 5113. Up to 622 conditions per place. [2022-11-16 10:54:42,177 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 76 selfloop transitions, 14 changer transitions 6/228 dead transitions. [2022-11-16 10:54:42,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 228 transitions, 1027 flow [2022-11-16 10:54:42,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 10:54:42,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 10:54:42,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1170 transitions. [2022-11-16 10:54:42,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7738095238095238 [2022-11-16 10:54:42,183 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1170 transitions. [2022-11-16 10:54:42,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1170 transitions. [2022-11-16 10:54:42,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:42,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1170 transitions. [2022-11-16 10:54:42,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 146.25) internal successors, (1170), 8 states have internal predecessors, (1170), 0 states have call successors, (0), 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 10:54:42,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 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 10:54:42,191 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 189.0) internal successors, (1701), 9 states have internal predecessors, (1701), 0 states have call successors, (0), 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 10:54:42,192 INFO L175 Difference]: Start difference. First operand has 233 places, 214 transitions, 796 flow. Second operand 8 states and 1170 transitions. [2022-11-16 10:54:42,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 228 transitions, 1027 flow [2022-11-16 10:54:42,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 228 transitions, 998 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 10:54:42,205 INFO L231 Difference]: Finished difference. Result has 235 places, 213 transitions, 792 flow [2022-11-16 10:54:42,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=792, PETRI_PLACES=235, PETRI_TRANSITIONS=213} [2022-11-16 10:54:42,206 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 74 predicate places. [2022-11-16 10:54:42,207 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 213 transitions, 792 flow [2022-11-16 10:54:42,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 143.42857142857142) internal successors, (1004), 7 states have internal predecessors, (1004), 0 states have call successors, (0), 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 10:54:42,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:42,208 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, 1, 1, 1, 1, 1, 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 10:54:42,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 10:54:42,209 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:42,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:42,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1027692090, now seen corresponding path program 1 times [2022-11-16 10:54:42,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:42,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746028958] [2022-11-16 10:54:42,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:42,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:42,649 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:54:42,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:42,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746028958] [2022-11-16 10:54:42,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746028958] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:42,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842155151] [2022-11-16 10:54:42,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:42,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:42,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:42,656 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:42,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 10:54:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:42,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 10:54:42,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:54:43,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:43,897 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:54:43,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842155151] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:43,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:54:43,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-11-16 10:54:43,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420057895] [2022-11-16 10:54:43,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:43,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 10:54:43,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 10:54:43,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-11-16 10:54:43,904 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 189 [2022-11-16 10:54:43,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 213 transitions, 792 flow. Second operand has 28 states, 28 states have (on average 126.25) internal successors, (3535), 28 states have internal predecessors, (3535), 0 states have call successors, (0), 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 10:54:43,909 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:43,909 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 189 [2022-11-16 10:54:43,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:47,606 INFO L130 PetriNetUnfolder]: 1232/5958 cut-off events. [2022-11-16 10:54:47,606 INFO L131 PetriNetUnfolder]: For 2559/2651 co-relation queries the response was YES. [2022-11-16 10:54:47,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11432 conditions, 5958 events. 1232/5958 cut-off events. For 2559/2651 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 57900 event pairs, 305 based on Foata normal form. 47/5589 useless extension candidates. Maximal degree in co-relation 9479. Up to 736 conditions per place. [2022-11-16 10:54:47,652 INFO L137 encePairwiseOnDemand]: 163/189 looper letters, 202 selfloop transitions, 90 changer transitions 29/425 dead transitions. [2022-11-16 10:54:47,653 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 425 transitions, 2290 flow [2022-11-16 10:54:47,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-11-16 10:54:47,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-11-16 10:54:47,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 7325 transitions. [2022-11-16 10:54:47,667 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6682174785623062 [2022-11-16 10:54:47,667 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 7325 transitions. [2022-11-16 10:54:47,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 7325 transitions. [2022-11-16 10:54:47,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:47,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 7325 transitions. [2022-11-16 10:54:47,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 126.29310344827586) internal successors, (7325), 58 states have internal predecessors, (7325), 0 states have call successors, (0), 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 10:54:47,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 189.0) internal successors, (11151), 59 states have internal predecessors, (11151), 0 states have call successors, (0), 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 10:54:47,711 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 189.0) internal successors, (11151), 59 states have internal predecessors, (11151), 0 states have call successors, (0), 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 10:54:47,712 INFO L175 Difference]: Start difference. First operand has 235 places, 213 transitions, 792 flow. Second operand 58 states and 7325 transitions. [2022-11-16 10:54:47,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 425 transitions, 2290 flow [2022-11-16 10:54:47,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 425 transitions, 2208 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-11-16 10:54:47,733 INFO L231 Difference]: Finished difference. Result has 288 places, 258 transitions, 1182 flow [2022-11-16 10:54:47,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1182, PETRI_PLACES=288, PETRI_TRANSITIONS=258} [2022-11-16 10:54:47,735 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 127 predicate places. [2022-11-16 10:54:47,735 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 258 transitions, 1182 flow [2022-11-16 10:54:47,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 126.25) internal successors, (3535), 28 states have internal predecessors, (3535), 0 states have call successors, (0), 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 10:54:47,737 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:47,737 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:47,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:47,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 10:54:47,943 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash 2115874665, now seen corresponding path program 1 times [2022-11-16 10:54:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:47,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987234857] [2022-11-16 10:54:47,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:47,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:54:48,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:48,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987234857] [2022-11-16 10:54:48,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987234857] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:48,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423911882] [2022-11-16 10:54:48,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:48,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:48,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:48,276 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:48,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 10:54:48,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:48,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 10:54:48,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:54:49,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 10:54:49,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423911882] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:49,529 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:54:49,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-11-16 10:54:49,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318459653] [2022-11-16 10:54:49,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:49,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 10:54:49,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:49,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 10:54:49,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-11-16 10:54:49,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 189 [2022-11-16 10:54:49,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 258 transitions, 1182 flow. Second operand has 28 states, 28 states have (on average 126.89285714285714) internal successors, (3553), 28 states have internal predecessors, (3553), 0 states have call successors, (0), 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 10:54:49,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:49,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 189 [2022-11-16 10:54:49,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:53,129 INFO L130 PetriNetUnfolder]: 1187/4919 cut-off events. [2022-11-16 10:54:53,129 INFO L131 PetriNetUnfolder]: For 6394/6510 co-relation queries the response was YES. [2022-11-16 10:54:53,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10633 conditions, 4919 events. 1187/4919 cut-off events. For 6394/6510 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 45930 event pairs, 322 based on Foata normal form. 69/4641 useless extension candidates. Maximal degree in co-relation 8744. Up to 816 conditions per place. [2022-11-16 10:54:53,180 INFO L137 encePairwiseOnDemand]: 163/189 looper letters, 151 selfloop transitions, 63 changer transitions 104/422 dead transitions. [2022-11-16 10:54:53,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 422 transitions, 2476 flow [2022-11-16 10:54:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-16 10:54:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-16 10:54:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 6947 transitions. [2022-11-16 10:54:53,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6683020683020683 [2022-11-16 10:54:53,194 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 6947 transitions. [2022-11-16 10:54:53,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 6947 transitions. [2022-11-16 10:54:53,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:53,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 6947 transitions. [2022-11-16 10:54:53,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 126.30909090909091) internal successors, (6947), 55 states have internal predecessors, (6947), 0 states have call successors, (0), 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 10:54:53,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 189.0) internal successors, (10584), 56 states have internal predecessors, (10584), 0 states have call successors, (0), 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 10:54:53,235 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 189.0) internal successors, (10584), 56 states have internal predecessors, (10584), 0 states have call successors, (0), 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 10:54:53,236 INFO L175 Difference]: Start difference. First operand has 288 places, 258 transitions, 1182 flow. Second operand 55 states and 6947 transitions. [2022-11-16 10:54:53,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 422 transitions, 2476 flow [2022-11-16 10:54:53,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 422 transitions, 2372 flow, removed 13 selfloop flow, removed 18 redundant places. [2022-11-16 10:54:53,268 INFO L231 Difference]: Finished difference. Result has 334 places, 245 transitions, 1153 flow [2022-11-16 10:54:53,268 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1094, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=1153, PETRI_PLACES=334, PETRI_TRANSITIONS=245} [2022-11-16 10:54:53,269 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 173 predicate places. [2022-11-16 10:54:53,270 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 245 transitions, 1153 flow [2022-11-16 10:54:53,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 126.89285714285714) internal successors, (3553), 28 states have internal predecessors, (3553), 0 states have call successors, (0), 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 10:54:53,271 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:53,272 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:54:53,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 10:54:53,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 10:54:53,480 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:53,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:53,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1895009167, now seen corresponding path program 1 times [2022-11-16 10:54:53,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:53,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569291403] [2022-11-16 10:54:53,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:53,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:53,860 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:53,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:53,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569291403] [2022-11-16 10:54:53,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569291403] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:53,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089122315] [2022-11-16 10:54:53,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:53,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:53,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:53,863 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:53,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 10:54:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:53,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 10:54:53,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:54,128 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:54,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:54,485 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:54:54,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089122315] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:54,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:54:54,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-16 10:54:54,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92615639] [2022-11-16 10:54:54,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:54,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 10:54:54,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:54,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 10:54:54,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-16 10:54:54,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 189 [2022-11-16 10:54:54,497 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 245 transitions, 1153 flow. Second operand has 32 states, 32 states have (on average 154.28125) internal successors, (4937), 32 states have internal predecessors, (4937), 0 states have call successors, (0), 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 10:54:54,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:54,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 189 [2022-11-16 10:54:54,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:56,116 INFO L130 PetriNetUnfolder]: 94/2776 cut-off events. [2022-11-16 10:54:56,117 INFO L131 PetriNetUnfolder]: For 2407/2420 co-relation queries the response was YES. [2022-11-16 10:54:56,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5155 conditions, 2776 events. 94/2776 cut-off events. For 2407/2420 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 19234 event pairs, 0 based on Foata normal form. 24/2748 useless extension candidates. Maximal degree in co-relation 4661. Up to 98 conditions per place. [2022-11-16 10:54:56,138 INFO L137 encePairwiseOnDemand]: 177/189 looper letters, 224 selfloop transitions, 136 changer transitions 0/503 dead transitions. [2022-11-16 10:54:56,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 503 transitions, 3152 flow [2022-11-16 10:54:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 10:54:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 10:54:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 6946 transitions. [2022-11-16 10:54:56,147 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8352573352573353 [2022-11-16 10:54:56,147 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 6946 transitions. [2022-11-16 10:54:56,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 6946 transitions. [2022-11-16 10:54:56,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:56,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 6946 transitions. [2022-11-16 10:54:56,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 157.86363636363637) internal successors, (6946), 44 states have internal predecessors, (6946), 0 states have call successors, (0), 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 10:54:56,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 189.0) internal successors, (8505), 45 states have internal predecessors, (8505), 0 states have call successors, (0), 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 10:54:56,175 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 189.0) internal successors, (8505), 45 states have internal predecessors, (8505), 0 states have call successors, (0), 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 10:54:56,176 INFO L175 Difference]: Start difference. First operand has 334 places, 245 transitions, 1153 flow. Second operand 44 states and 6946 transitions. [2022-11-16 10:54:56,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 503 transitions, 3152 flow [2022-11-16 10:54:56,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 503 transitions, 2934 flow, removed 17 selfloop flow, removed 49 redundant places. [2022-11-16 10:54:56,196 INFO L231 Difference]: Finished difference. Result has 311 places, 321 transitions, 1891 flow [2022-11-16 10:54:56,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=1891, PETRI_PLACES=311, PETRI_TRANSITIONS=321} [2022-11-16 10:54:56,197 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 150 predicate places. [2022-11-16 10:54:56,197 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 321 transitions, 1891 flow [2022-11-16 10:54:56,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 154.28125) internal successors, (4937), 32 states have internal predecessors, (4937), 0 states have call successors, (0), 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 10:54:56,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:56,200 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:56,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 10:54:56,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 10:54:56,405 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:56,406 INFO L85 PathProgramCache]: Analyzing trace with hash 132683149, now seen corresponding path program 2 times [2022-11-16 10:54:56,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:56,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138462501] [2022-11-16 10:54:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:56,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:56,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:54:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:54:56,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:54:56,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138462501] [2022-11-16 10:54:56,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138462501] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:54:56,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954983091] [2022-11-16 10:54:56,554 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:54:56,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:54:56,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:54:56,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:54:56,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 10:54:56,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:54:56,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:54:56,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:54:56,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:54:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 10:54:56,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:54:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 10:54:57,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954983091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:54:57,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:54:57,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-16 10:54:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194197436] [2022-11-16 10:54:57,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:54:57,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 10:54:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:54:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 10:54:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-16 10:54:57,140 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 189 [2022-11-16 10:54:57,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 321 transitions, 1891 flow. Second operand has 10 states, 10 states have (on average 158.2) internal successors, (1582), 10 states have internal predecessors, (1582), 0 states have call successors, (0), 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 10:54:57,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:54:57,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 189 [2022-11-16 10:54:57,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:54:59,526 INFO L130 PetriNetUnfolder]: 2759/11486 cut-off events. [2022-11-16 10:54:59,526 INFO L131 PetriNetUnfolder]: For 5929/6072 co-relation queries the response was YES. [2022-11-16 10:54:59,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23086 conditions, 11486 events. 2759/11486 cut-off events. For 5929/6072 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 115216 event pairs, 390 based on Foata normal form. 156/11016 useless extension candidates. Maximal degree in co-relation 22488. Up to 1144 conditions per place. [2022-11-16 10:54:59,620 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 58 selfloop transitions, 15 changer transitions 0/368 dead transitions. [2022-11-16 10:54:59,621 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 368 transitions, 2206 flow [2022-11-16 10:54:59,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 10:54:59,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 10:54:59,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2231 transitions. [2022-11-16 10:54:59,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8431594860166288 [2022-11-16 10:54:59,625 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2231 transitions. [2022-11-16 10:54:59,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2231 transitions. [2022-11-16 10:54:59,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:54:59,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2231 transitions. [2022-11-16 10:54:59,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 159.35714285714286) internal successors, (2231), 14 states have internal predecessors, (2231), 0 states have call successors, (0), 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 10:54:59,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,634 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:54:59,635 INFO L175 Difference]: Start difference. First operand has 311 places, 321 transitions, 1891 flow. Second operand 14 states and 2231 transitions. [2022-11-16 10:54:59,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 368 transitions, 2206 flow [2022-11-16 10:54:59,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 368 transitions, 2109 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-16 10:54:59,664 INFO L231 Difference]: Finished difference. Result has 310 places, 325 transitions, 1851 flow [2022-11-16 10:54:59,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1851, PETRI_PLACES=310, PETRI_TRANSITIONS=325} [2022-11-16 10:54:59,665 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 149 predicate places. [2022-11-16 10:54:59,666 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 325 transitions, 1851 flow [2022-11-16 10:54:59,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.2) internal successors, (1582), 10 states have internal predecessors, (1582), 0 states have call successors, (0), 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 10:54:59,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:54:59,667 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:54:59,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-16 10:54:59,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-16 10:54:59,873 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:54:59,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:54:59,874 INFO L85 PathProgramCache]: Analyzing trace with hash -181789190, now seen corresponding path program 1 times [2022-11-16 10:54:59,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:54:59,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546632112] [2022-11-16 10:54:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:54:59,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:54:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:55:00,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:00,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546632112] [2022-11-16 10:55:00,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546632112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46411867] [2022-11-16 10:55:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:00,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:00,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:00,024 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:00,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 10:55:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:00,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:55:00,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:55:00,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:00,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46411867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:00,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:55:00,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 10:55:00,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439519523] [2022-11-16 10:55:00,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:00,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:55:00,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:00,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:55:00,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:55:00,374 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 189 [2022-11-16 10:55:00,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 325 transitions, 1851 flow. Second operand has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 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 10:55:00,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:00,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 189 [2022-11-16 10:55:00,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:01,498 INFO L130 PetriNetUnfolder]: 549/4284 cut-off events. [2022-11-16 10:55:01,498 INFO L131 PetriNetUnfolder]: For 2412/2477 co-relation queries the response was YES. [2022-11-16 10:55:01,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8700 conditions, 4284 events. 549/4284 cut-off events. For 2412/2477 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 34793 event pairs, 78 based on Foata normal form. 52/4152 useless extension candidates. Maximal degree in co-relation 8262. Up to 533 conditions per place. [2022-11-16 10:55:01,529 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 23 selfloop transitions, 8 changer transitions 0/334 dead transitions. [2022-11-16 10:55:01,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 334 transitions, 1937 flow [2022-11-16 10:55:01,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:55:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:55:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1162 transitions. [2022-11-16 10:55:01,532 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783068783068783 [2022-11-16 10:55:01,532 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1162 transitions. [2022-11-16 10:55:01,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1162 transitions. [2022-11-16 10:55:01,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:01,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1162 transitions. [2022-11-16 10:55:01,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.0) internal successors, (1162), 7 states have internal predecessors, (1162), 0 states have call successors, (0), 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 10:55:01,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 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 10:55:01,541 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 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 10:55:01,541 INFO L175 Difference]: Start difference. First operand has 310 places, 325 transitions, 1851 flow. Second operand 7 states and 1162 transitions. [2022-11-16 10:55:01,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 334 transitions, 1937 flow [2022-11-16 10:55:01,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 334 transitions, 1896 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-16 10:55:01,569 INFO L231 Difference]: Finished difference. Result has 304 places, 323 transitions, 1813 flow [2022-11-16 10:55:01,570 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1797, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1813, PETRI_PLACES=304, PETRI_TRANSITIONS=323} [2022-11-16 10:55:01,571 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 143 predicate places. [2022-11-16 10:55:01,571 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 323 transitions, 1813 flow [2022-11-16 10:55:01,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.66666666666666) internal successors, (988), 6 states have internal predecessors, (988), 0 states have call successors, (0), 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 10:55:01,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:01,572 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:01,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:01,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:01,778 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:55:01,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:01,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1052697724, now seen corresponding path program 2 times [2022-11-16 10:55:01,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:01,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519591622] [2022-11-16 10:55:01,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:01,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:55:01,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:01,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519591622] [2022-11-16 10:55:01,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519591622] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:01,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550607823] [2022-11-16 10:55:01,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:55:01,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:01,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:01,941 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:01,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 10:55:02,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:55:02,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:02,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:55:02,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:02,283 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 10:55:02,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:02,508 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-16 10:55:02,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550607823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:02,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:02,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-16 10:55:02,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197801556] [2022-11-16 10:55:02,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:02,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 10:55:02,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:02,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 10:55:02,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-16 10:55:02,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 189 [2022-11-16 10:55:02,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 323 transitions, 1813 flow. Second operand has 10 states, 10 states have (on average 158.4) internal successors, (1584), 10 states have internal predecessors, (1584), 0 states have call successors, (0), 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 10:55:02,515 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:02,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 189 [2022-11-16 10:55:02,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:05,988 INFO L130 PetriNetUnfolder]: 5632/17752 cut-off events. [2022-11-16 10:55:05,989 INFO L131 PetriNetUnfolder]: For 13696/14138 co-relation queries the response was YES. [2022-11-16 10:55:06,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37755 conditions, 17752 events. 5632/17752 cut-off events. For 13696/14138 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 190758 event pairs, 741 based on Foata normal form. 611/17230 useless extension candidates. Maximal degree in co-relation 37166. Up to 1915 conditions per place. [2022-11-16 10:55:06,116 INFO L137 encePairwiseOnDemand]: 179/189 looper letters, 65 selfloop transitions, 15 changer transitions 0/376 dead transitions. [2022-11-16 10:55:06,116 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 376 transitions, 2187 flow [2022-11-16 10:55:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 10:55:06,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 10:55:06,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2228 transitions. [2022-11-16 10:55:06,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8420256991685563 [2022-11-16 10:55:06,119 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2228 transitions. [2022-11-16 10:55:06,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2228 transitions. [2022-11-16 10:55:06,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:06,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2228 transitions. [2022-11-16 10:55:06,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 159.14285714285714) internal successors, (2228), 14 states have internal predecessors, (2228), 0 states have call successors, (0), 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 10:55:06,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:06,128 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 189.0) internal successors, (2835), 15 states have internal predecessors, (2835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 10:55:06,128 INFO L175 Difference]: Start difference. First operand has 304 places, 323 transitions, 1813 flow. Second operand 14 states and 2228 transitions. [2022-11-16 10:55:06,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 376 transitions, 2187 flow [2022-11-16 10:55:06,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 376 transitions, 2171 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 10:55:06,163 INFO L231 Difference]: Finished difference. Result has 312 places, 327 transitions, 1854 flow [2022-11-16 10:55:06,163 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1793, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1854, PETRI_PLACES=312, PETRI_TRANSITIONS=327} [2022-11-16 10:55:06,164 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 151 predicate places. [2022-11-16 10:55:06,164 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 327 transitions, 1854 flow [2022-11-16 10:55:06,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 158.4) internal successors, (1584), 10 states have internal predecessors, (1584), 0 states have call successors, (0), 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 10:55:06,165 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:06,165 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:06,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:06,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:06,372 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:55:06,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1726108417, now seen corresponding path program 1 times [2022-11-16 10:55:06,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:06,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54191740] [2022-11-16 10:55:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:06,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:06,670 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:55:06,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:06,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54191740] [2022-11-16 10:55:06,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54191740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:06,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543343930] [2022-11-16 10:55:06,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:06,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:06,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:06,673 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:06,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 10:55:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:06,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 10:55:06,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:07,033 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-16 10:55:07,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 10:55:07,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543343930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 10:55:07,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 10:55:07,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 10:55:07,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418285527] [2022-11-16 10:55:07,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 10:55:07,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 10:55:07,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:07,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 10:55:07,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 10:55:07,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 189 [2022-11-16 10:55:07,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 327 transitions, 1854 flow. Second operand has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 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 10:55:07,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:07,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 189 [2022-11-16 10:55:07,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:08,828 INFO L130 PetriNetUnfolder]: 1810/7768 cut-off events. [2022-11-16 10:55:08,828 INFO L131 PetriNetUnfolder]: For 5378/5417 co-relation queries the response was YES. [2022-11-16 10:55:08,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14978 conditions, 7768 events. 1810/7768 cut-off events. For 5378/5417 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 85896 event pairs, 234 based on Foata normal form. 130/6622 useless extension candidates. Maximal degree in co-relation 14390. Up to 1560 conditions per place. [2022-11-16 10:55:08,871 INFO L137 encePairwiseOnDemand]: 184/189 looper letters, 0 selfloop transitions, 1 changer transitions 84/335 dead transitions. [2022-11-16 10:55:08,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 335 transitions, 1931 flow [2022-11-16 10:55:08,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 10:55:08,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 10:55:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1161 transitions. [2022-11-16 10:55:08,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8775510204081632 [2022-11-16 10:55:08,873 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1161 transitions. [2022-11-16 10:55:08,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1161 transitions. [2022-11-16 10:55:08,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:08,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1161 transitions. [2022-11-16 10:55:08,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.85714285714286) internal successors, (1161), 7 states have internal predecessors, (1161), 0 states have call successors, (0), 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 10:55:08,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 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 10:55:08,878 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 189.0) internal successors, (1512), 8 states have internal predecessors, (1512), 0 states have call successors, (0), 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 10:55:08,878 INFO L175 Difference]: Start difference. First operand has 312 places, 327 transitions, 1854 flow. Second operand 7 states and 1161 transitions. [2022-11-16 10:55:08,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 335 transitions, 1931 flow [2022-11-16 10:55:08,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 335 transitions, 1890 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-16 10:55:08,908 INFO L231 Difference]: Finished difference. Result has 306 places, 251 transitions, 1592 flow [2022-11-16 10:55:08,908 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1592, PETRI_PLACES=306, PETRI_TRANSITIONS=251} [2022-11-16 10:55:08,909 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 145 predicate places. [2022-11-16 10:55:08,909 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 251 transitions, 1592 flow [2022-11-16 10:55:08,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 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 10:55:08,909 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 10:55:08,910 INFO L209 CegarLoopForPetriNet]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:55:08,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 10:55:09,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:09,116 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-11-16 10:55:09,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 10:55:09,117 INFO L85 PathProgramCache]: Analyzing trace with hash -218877711, now seen corresponding path program 2 times [2022-11-16 10:55:09,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 10:55:09,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318985100] [2022-11-16 10:55:09,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 10:55:09,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 10:55:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 10:55:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 10:55:10,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 10:55:10,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318985100] [2022-11-16 10:55:10,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318985100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 10:55:10,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157401437] [2022-11-16 10:55:10,096 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 10:55:10,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 10:55:10,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 10:55:10,098 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 10:55:10,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 10:55:10,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 10:55:10,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 10:55:10,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 10:55:10,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 10:55:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-16 10:55:10,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 10:55:11,018 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2022-11-16 10:55:11,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157401437] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 10:55:11,018 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 10:55:11,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 7, 7] total 37 [2022-11-16 10:55:11,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851215405] [2022-11-16 10:55:11,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 10:55:11,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-16 10:55:11,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 10:55:11,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-16 10:55:11,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=1093, Unknown=0, NotChecked=0, Total=1406 [2022-11-16 10:55:11,026 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 189 [2022-11-16 10:55:11,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 251 transitions, 1592 flow. Second operand has 38 states, 38 states have (on average 135.97368421052633) internal successors, (5167), 38 states have internal predecessors, (5167), 0 states have call successors, (0), 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 10:55:11,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 10:55:11,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 189 [2022-11-16 10:55:11,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 10:55:14,750 INFO L130 PetriNetUnfolder]: 18/855 cut-off events. [2022-11-16 10:55:14,750 INFO L131 PetriNetUnfolder]: For 1924/1924 co-relation queries the response was YES. [2022-11-16 10:55:14,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 855 events. 18/855 cut-off events. For 1924/1924 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 2629 event pairs, 0 based on Foata normal form. 6/859 useless extension candidates. Maximal degree in co-relation 2455. Up to 82 conditions per place. [2022-11-16 10:55:14,752 INFO L137 encePairwiseOnDemand]: 171/189 looper letters, 0 selfloop transitions, 0 changer transitions 431/431 dead transitions. [2022-11-16 10:55:14,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 431 transitions, 3171 flow [2022-11-16 10:55:14,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-11-16 10:55:14,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2022-11-16 10:55:14,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 15877 transitions. [2022-11-16 10:55:14,767 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7119092458075509 [2022-11-16 10:55:14,768 INFO L72 ComplementDD]: Start complementDD. Operand 118 states and 15877 transitions. [2022-11-16 10:55:14,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 118 states and 15877 transitions. [2022-11-16 10:55:14,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 10:55:14,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 118 states and 15877 transitions. [2022-11-16 10:55:14,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 119 states, 118 states have (on average 134.55084745762713) internal successors, (15877), 118 states have internal predecessors, (15877), 0 states have call successors, (0), 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 10:55:14,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 119 states, 119 states have (on average 189.0) internal successors, (22491), 119 states have internal predecessors, (22491), 0 states have call successors, (0), 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 10:55:14,818 INFO L81 ComplementDD]: Finished complementDD. Result has 119 states, 119 states have (on average 189.0) internal successors, (22491), 119 states have internal predecessors, (22491), 0 states have call successors, (0), 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 10:55:14,819 INFO L175 Difference]: Start difference. First operand has 306 places, 251 transitions, 1592 flow. Second operand 118 states and 15877 transitions. [2022-11-16 10:55:14,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 431 transitions, 3171 flow [2022-11-16 10:55:14,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 431 transitions, 2981 flow, removed 0 selfloop flow, removed 23 redundant places. [2022-11-16 10:55:14,836 INFO L231 Difference]: Finished difference. Result has 324 places, 0 transitions, 0 flow [2022-11-16 10:55:14,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=1414, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=118, PETRI_FLOW=0, PETRI_PLACES=324, PETRI_TRANSITIONS=0} [2022-11-16 10:55:14,837 INFO L288 CegarLoopForPetriNet]: 161 programPoint places, 163 predicate places. [2022-11-16 10:55:14,837 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 0 transitions, 0 flow [2022-11-16 10:55:14,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 135.97368421052633) internal successors, (5167), 38 states have internal predecessors, (5167), 0 states have call successors, (0), 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 10:55:14,840 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 14 remaining) [2022-11-16 10:55:14,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2022-11-16 10:55:14,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2022-11-16 10:55:14,841 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2022-11-16 10:55:14,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2022-11-16 10:55:14,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2022-11-16 10:55:14,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2022-11-16 10:55:14,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2022-11-16 10:55:14,842 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2022-11-16 10:55:14,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2022-11-16 10:55:14,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2022-11-16 10:55:14,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2022-11-16 10:55:14,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2022-11-16 10:55:14,843 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2022-11-16 10:55:14,853 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 10:55:15,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 10:55:15,049 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 10:55:15,062 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 10:55:15,062 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 10:55:15,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 10:55:15 BasicIcfg [2022-11-16 10:55:15,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 10:55:15,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 10:55:15,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 10:55:15,069 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 10:55:15,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 10:54:29" (3/4) ... [2022-11-16 10:55:15,072 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 10:55:15,078 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 10:55:15,079 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 10:55:15,086 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-16 10:55:15,087 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 10:55:15,087 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 10:55:15,087 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 10:55:15,139 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 10:55:15,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 10:55:15,141 INFO L158 Benchmark]: Toolchain (without parser) took 46719.41ms. Allocated memory was 113.2MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 68.0MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 497.8MB. Max. memory is 16.1GB. [2022-11-16 10:55:15,141 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:55:15,142 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.06ms. Allocated memory is still 113.2MB. Free memory was 67.9MB in the beginning and 86.5MB in the end (delta: -18.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 10:55:15,142 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.62ms. Allocated memory is still 113.2MB. Free memory was 86.0MB in the beginning and 84.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:55:15,142 INFO L158 Benchmark]: Boogie Preprocessor took 35.01ms. Allocated memory is still 113.2MB. Free memory was 84.4MB in the beginning and 83.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 10:55:15,143 INFO L158 Benchmark]: RCFGBuilder took 695.72ms. Allocated memory is still 113.2MB. Free memory was 82.7MB in the beginning and 65.0MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 10:55:15,143 INFO L158 Benchmark]: TraceAbstraction took 45519.13ms. Allocated memory was 113.2MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 64.2MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 495.5MB. Max. memory is 16.1GB. [2022-11-16 10:55:15,143 INFO L158 Benchmark]: Witness Printer took 71.12ms. Allocated memory is still 1.8GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 10:55:15,146 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 84.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.06ms. Allocated memory is still 113.2MB. Free memory was 67.9MB in the beginning and 86.5MB in the end (delta: -18.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.62ms. Allocated memory is still 113.2MB. Free memory was 86.0MB in the beginning and 84.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.01ms. Allocated memory is still 113.2MB. Free memory was 84.4MB in the beginning and 83.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 695.72ms. Allocated memory is still 113.2MB. Free memory was 82.7MB in the beginning and 65.0MB in the end (delta: 17.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 45519.13ms. Allocated memory was 113.2MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 64.2MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 495.5MB. Max. memory is 16.1GB. * Witness Printer took 71.12ms. Allocated memory is still 1.8GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 213 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 45.3s, OverallIterations: 18, TraceHistogramMax: 15, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 30.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5535 SdHoareTripleChecker+Valid, 4.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5535 mSDsluCounter, 997 SdHoareTripleChecker+Invalid, 3.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 791 mSDsCounter, 446 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4136 IncrementalHoareTripleChecker+Invalid, 4582 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 446 mSolverCounterUnsat, 206 mSDtfsCounter, 4136 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2896 GetRequests, 2325 SyntacticMatches, 18 SemanticMatches, 553 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13746 ImplicationChecksByTransitivity, 10.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1891occurred in iteration=13, InterpolantAutomatonStates: 442, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 10.2s InterpolantComputationTime, 3429 NumberOfCodeBlocks, 3173 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 4415 ConstructedInterpolants, 0 QuantifiedInterpolants, 13623 SizeOfPredicates, 65 NumberOfNonLiveVariables, 2468 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 37 InterpolantComputations, 10 PerfectInterpolantSequences, 2117/3886 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 10:55:15,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e3729a4-6cc9-4453-88d1-5e6750d678a6/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE