./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.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_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/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_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/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_043c715f-0223-4afa-93ad-54a1be6d035d/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 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 11:59:22,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:59:22,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:59:22,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:59:22,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:59:22,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:59:22,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:59:22,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:59:22,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:59:22,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:59:22,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:59:23,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:59:23,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:59:23,004 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:59:23,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:59:23,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:59:23,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:59:23,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:59:23,015 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:59:23,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:59:23,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:59:23,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:59:23,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:59:23,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:59:23,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:59:23,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:59:23,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:59:23,048 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:59:23,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:59:23,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:59:23,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:59:23,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:59:23,056 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:59:23,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:59:23,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:59:23,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:59:23,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:59:23,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:59:23,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:59:23,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:59:23,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:59:23,065 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:59:23,104 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:59:23,105 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:59:23,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:59:23,105 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:59:23,106 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:59:23,106 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:59:23,107 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:59:23,107 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:59:23,107 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:59:23,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:59:23,108 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:59:23,108 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:59:23,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:59:23,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:59:23,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:59:23,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:59:23,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:59:23,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:59:23,110 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:59:23,110 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:59:23,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:59:23,110 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:59:23,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:59:23,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:59:23,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:59:23,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:59:23,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:59:23,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:59:23,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:59:23,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:59:23,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:59:23,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:59:23,113 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:59:23,113 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:59:23,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:59:23,114 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_043c715f-0223-4afa-93ad-54a1be6d035d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a18ee378e36a8b6ec16846ba26aa7ebab799f55311c04bb5b266d3aa0d0986d [2022-11-16 11:59:23,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:59:23,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:59:23,468 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:59:23,469 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:59:23,470 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:59:23,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-16 11:59:23,565 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/data/7de3cd3ef/7b92f3fe20b4487eb87cd7f8320de5d8/FLAG7923b57eb [2022-11-16 11:59:24,192 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:59:24,193 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c [2022-11-16 11:59:24,212 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/data/7de3cd3ef/7b92f3fe20b4487eb87cd7f8320de5d8/FLAG7923b57eb [2022-11-16 11:59:24,499 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/data/7de3cd3ef/7b92f3fe20b4487eb87cd7f8320de5d8 [2022-11-16 11:59:24,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:59:24,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:59:24,511 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:59:24,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:59:24,517 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:59:24,518 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:59:24" (1/1) ... [2022-11-16 11:59:24,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e3d56b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:24, skipping insertion in model container [2022-11-16 11:59:24,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:59:24" (1/1) ... [2022-11-16 11:59:24,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:59:24,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:59:24,983 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_043c715f-0223-4afa-93ad-54a1be6d035d/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-16 11:59:24,991 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:59:25,013 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:59:25,065 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_043c715f-0223-4afa-93ad-54a1be6d035d/sv-benchmarks/c/weaver/chl-name-comparator-trans.wvr.c[4788,4801] [2022-11-16 11:59:25,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:59:25,088 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:59:25,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25 WrapperNode [2022-11-16 11:59:25,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:59:25,090 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:59:25,090 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:59:25,090 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:59:25,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (1/1) ... [2022-11-16 11:59:25,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (1/1) ... [2022-11-16 11:59:25,175 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 347 [2022-11-16 11:59:25,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:59:25,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:59:25,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:59:25,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:59:25,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (1/1) ... [2022-11-16 11:59:25,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (1/1) ... [2022-11-16 11:59:25,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (1/1) ... [2022-11-16 11:59:25,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (1/1) ... [2022-11-16 11:59:25,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (1/1) ... [2022-11-16 11:59:25,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (1/1) ... [2022-11-16 11:59:25,252 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (1/1) ... [2022-11-16 11:59:25,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (1/1) ... [2022-11-16 11:59:25,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:59:25,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:59:25,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:59:25,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:59:25,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (1/1) ... [2022-11-16 11:59:25,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:59:25,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:59:25,324 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:59:25,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:59:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:59:25,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:59:25,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:59:25,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:59:25,392 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:59:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:59:25,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:59:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:59:25,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:59:25,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:59:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:59:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:59:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:59:25,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:59:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:59:25,397 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:59:25,601 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:59:25,604 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:59:26,454 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:59:26,484 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:59:26,485 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 11:59:26,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:59:26 BoogieIcfgContainer [2022-11-16 11:59:26,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:59:26,520 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:59:26,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:59:26,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:59:26,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:59:24" (1/3) ... [2022-11-16 11:59:26,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2012d7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:59:26, skipping insertion in model container [2022-11-16 11:59:26,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:59:25" (2/3) ... [2022-11-16 11:59:26,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2012d7a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:59:26, skipping insertion in model container [2022-11-16 11:59:26,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:59:26" (3/3) ... [2022-11-16 11:59:26,529 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-trans.wvr.c [2022-11-16 11:59:26,539 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:59:26,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:59:26,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-16 11:59:26,551 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:59:26,718 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:59:26,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 456 transitions, 936 flow [2022-11-16 11:59:27,211 INFO L130 PetriNetUnfolder]: 32/453 cut-off events. [2022-11-16 11:59:27,212 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:59:27,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 453 events. 32/453 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1308 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-11-16 11:59:27,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 456 transitions, 936 flow [2022-11-16 11:59:27,255 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 432 transitions, 879 flow [2022-11-16 11:59:27,280 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:59:27,293 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;@68e1a70a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:59:27,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-11-16 11:59:27,316 INFO L130 PetriNetUnfolder]: 3/112 cut-off events. [2022-11-16 11:59:27,316 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:59:27,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:27,318 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, 1, 1, 1, 1, 1] [2022-11-16 11:59:27,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:27,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:27,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1259387843, now seen corresponding path program 1 times [2022-11-16 11:59:27,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:27,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997768337] [2022-11-16 11:59:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:27,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:59:27,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:27,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997768337] [2022-11-16 11:59:27,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997768337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:27,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:27,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:59:27,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853213795] [2022-11-16 11:59:27,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:27,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:59:27,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:27,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:59:27,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:59:28,000 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-16 11:59:28,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 432 transitions, 879 flow. Second operand has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:28,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:28,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-16 11:59:28,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:28,506 INFO L130 PetriNetUnfolder]: 25/727 cut-off events. [2022-11-16 11:59:28,506 INFO L131 PetriNetUnfolder]: For 22/26 co-relation queries the response was YES. [2022-11-16 11:59:28,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 778 conditions, 727 events. 25/727 cut-off events. For 22/26 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3628 event pairs, 0 based on Foata normal form. 66/691 useless extension candidates. Maximal degree in co-relation 557. Up to 18 conditions per place. [2022-11-16 11:59:28,525 INFO L137 encePairwiseOnDemand]: 432/456 looper letters, 26 selfloop transitions, 4 changer transitions 2/427 dead transitions. [2022-11-16 11:59:28,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 427 transitions, 944 flow [2022-11-16 11:59:28,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:59:28,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:59:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2156 transitions. [2022-11-16 11:59:28,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9456140350877194 [2022-11-16 11:59:28,558 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2156 transitions. [2022-11-16 11:59:28,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2156 transitions. [2022-11-16 11:59:28,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:28,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2156 transitions. [2022-11-16 11:59:28,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 431.2) internal successors, (2156), 5 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:28,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:28,595 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:28,598 INFO L175 Difference]: Start difference. First operand has 411 places, 432 transitions, 879 flow. Second operand 5 states and 2156 transitions. [2022-11-16 11:59:28,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 427 transitions, 944 flow [2022-11-16 11:59:28,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 427 transitions, 926 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:59:28,623 INFO L231 Difference]: Finished difference. Result has 413 places, 415 transitions, 860 flow [2022-11-16 11:59:28,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=834, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=860, PETRI_PLACES=413, PETRI_TRANSITIONS=415} [2022-11-16 11:59:28,631 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 2 predicate places. [2022-11-16 11:59:28,631 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 415 transitions, 860 flow [2022-11-16 11:59:28,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:28,633 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:28,635 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:28,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:59:28,636 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash -846474772, now seen corresponding path program 1 times [2022-11-16 11:59:28,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:28,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615405266] [2022-11-16 11:59:28,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:28,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:28,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:28,879 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 11:59:28,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:28,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615405266] [2022-11-16 11:59:28,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615405266] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:59:28,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834091873] [2022-11-16 11:59:28,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:28,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:28,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:59:28,884 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:59:28,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:59:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:29,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:59:29,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:29,245 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 11:59:29,246 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:59:29,357 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 11:59:29,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834091873] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:59:29,358 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:59:29,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:59:29,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564143200] [2022-11-16 11:59:29,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:59:29,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:59:29,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:29,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:59:29,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:59:29,376 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-16 11:59:29,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 415 transitions, 860 flow. Second operand has 12 states, 12 states have (on average 420.6666666666667) internal successors, (5048), 12 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:29,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:29,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-16 11:59:29,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:30,329 INFO L130 PetriNetUnfolder]: 61/1666 cut-off events. [2022-11-16 11:59:30,331 INFO L131 PetriNetUnfolder]: For 21/31 co-relation queries the response was YES. [2022-11-16 11:59:30,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1786 conditions, 1666 events. 61/1666 cut-off events. For 21/31 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 11962 event pairs, 0 based on Foata normal form. 3/1424 useless extension candidates. Maximal degree in co-relation 1344. Up to 13 conditions per place. [2022-11-16 11:59:30,380 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 53 selfloop transitions, 18 changer transitions 0/466 dead transitions. [2022-11-16 11:59:30,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 466 transitions, 1150 flow [2022-11-16 11:59:30,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:59:30,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:59:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7598 transitions. [2022-11-16 11:59:30,480 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.925682261208577 [2022-11-16 11:59:30,481 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7598 transitions. [2022-11-16 11:59:30,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7598 transitions. [2022-11-16 11:59:30,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:30,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7598 transitions. [2022-11-16 11:59:30,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 422.1111111111111) internal successors, (7598), 18 states have internal predecessors, (7598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:30,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 456.0) internal successors, (8664), 19 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:30,534 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 456.0) internal successors, (8664), 19 states have internal predecessors, (8664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:30,535 INFO L175 Difference]: Start difference. First operand has 413 places, 415 transitions, 860 flow. Second operand 18 states and 7598 transitions. [2022-11-16 11:59:30,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 466 transitions, 1150 flow [2022-11-16 11:59:30,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 466 transitions, 1148 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:59:30,550 INFO L231 Difference]: Finished difference. Result has 431 places, 427 transitions, 964 flow [2022-11-16 11:59:30,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=964, PETRI_PLACES=431, PETRI_TRANSITIONS=427} [2022-11-16 11:59:30,552 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 20 predicate places. [2022-11-16 11:59:30,552 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 427 transitions, 964 flow [2022-11-16 11:59:30,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 420.6666666666667) internal successors, (5048), 12 states have internal predecessors, (5048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:30,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:30,557 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:30,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:30,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:30,763 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:30,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:30,763 INFO L85 PathProgramCache]: Analyzing trace with hash -470913155, now seen corresponding path program 1 times [2022-11-16 11:59:30,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:30,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197367669] [2022-11-16 11:59:30,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:30,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:31,097 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 11:59:31,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:31,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197367669] [2022-11-16 11:59:31,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197367669] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:59:31,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735871332] [2022-11-16 11:59:31,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:31,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:31,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:59:31,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:59:31,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:59:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:31,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:59:31,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:31,344 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 11:59:31,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:59:31,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735871332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:31,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:59:31,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:59:31,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639620410] [2022-11-16 11:59:31,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:31,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:59:31,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:31,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:59:31,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:59:31,351 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-16 11:59:31,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 427 transitions, 964 flow. Second operand has 6 states, 6 states have (on average 420.3333333333333) internal successors, (2522), 6 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:31,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:31,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-16 11:59:31,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:32,064 INFO L130 PetriNetUnfolder]: 61/1662 cut-off events. [2022-11-16 11:59:32,064 INFO L131 PetriNetUnfolder]: For 57/67 co-relation queries the response was YES. [2022-11-16 11:59:32,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1804 conditions, 1662 events. 61/1662 cut-off events. For 57/67 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 11945 event pairs, 0 based on Foata normal form. 4/1421 useless extension candidates. Maximal degree in co-relation 1437. Up to 36 conditions per place. [2022-11-16 11:59:32,112 INFO L137 encePairwiseOnDemand]: 451/456 looper letters, 27 selfloop transitions, 11 changer transitions 0/433 dead transitions. [2022-11-16 11:59:32,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 432 places, 433 transitions, 1041 flow [2022-11-16 11:59:32,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:59:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:59:32,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2956 transitions. [2022-11-16 11:59:32,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9260651629072681 [2022-11-16 11:59:32,119 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2956 transitions. [2022-11-16 11:59:32,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2956 transitions. [2022-11-16 11:59:32,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:32,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2956 transitions. [2022-11-16 11:59:32,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 422.2857142857143) internal successors, (2956), 7 states have internal predecessors, (2956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:32,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:32,134 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 456.0) internal successors, (3648), 8 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:32,134 INFO L175 Difference]: Start difference. First operand has 431 places, 427 transitions, 964 flow. Second operand 7 states and 2956 transitions. [2022-11-16 11:59:32,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 432 places, 433 transitions, 1041 flow [2022-11-16 11:59:32,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 433 transitions, 1009 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:59:32,144 INFO L231 Difference]: Finished difference. Result has 427 places, 423 transitions, 927 flow [2022-11-16 11:59:32,145 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=927, PETRI_PLACES=427, PETRI_TRANSITIONS=423} [2022-11-16 11:59:32,146 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 16 predicate places. [2022-11-16 11:59:32,146 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 423 transitions, 927 flow [2022-11-16 11:59:32,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 420.3333333333333) internal successors, (2522), 6 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:32,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:32,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:32,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:32,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:32,353 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:32,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:32,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1297888659, now seen corresponding path program 1 times [2022-11-16 11:59:32,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:32,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426923029] [2022-11-16 11:59:32,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:32,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:32,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:59:32,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:32,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426923029] [2022-11-16 11:59:32,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426923029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:32,513 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:32,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:59:32,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812817222] [2022-11-16 11:59:32,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:32,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:59:32,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:32,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:59:32,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:59:32,517 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-16 11:59:32,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 423 transitions, 927 flow. Second operand has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:32,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:32,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-16 11:59:32,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:35,552 INFO L130 PetriNetUnfolder]: 541/9022 cut-off events. [2022-11-16 11:59:35,553 INFO L131 PetriNetUnfolder]: For 42/47 co-relation queries the response was YES. [2022-11-16 11:59:35,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9863 conditions, 9022 events. 541/9022 cut-off events. For 42/47 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 105680 event pairs, 75 based on Foata normal form. 0/7557 useless extension candidates. Maximal degree in co-relation 7891. Up to 292 conditions per place. [2022-11-16 11:59:35,877 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 28 selfloop transitions, 6 changer transitions 0/439 dead transitions. [2022-11-16 11:59:35,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 439 transitions, 1038 flow [2022-11-16 11:59:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:59:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:59:35,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2121 transitions. [2022-11-16 11:59:35,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9302631578947368 [2022-11-16 11:59:35,885 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2121 transitions. [2022-11-16 11:59:35,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2121 transitions. [2022-11-16 11:59:35,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:35,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2121 transitions. [2022-11-16 11:59:35,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 424.2) internal successors, (2121), 5 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:35,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:35,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:35,903 INFO L175 Difference]: Start difference. First operand has 427 places, 423 transitions, 927 flow. Second operand 5 states and 2121 transitions. [2022-11-16 11:59:35,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 439 transitions, 1038 flow [2022-11-16 11:59:35,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 439 transitions, 1024 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:59:35,916 INFO L231 Difference]: Finished difference. Result has 429 places, 426 transitions, 949 flow [2022-11-16 11:59:35,917 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=949, PETRI_PLACES=429, PETRI_TRANSITIONS=426} [2022-11-16 11:59:35,918 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 18 predicate places. [2022-11-16 11:59:35,918 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 426 transitions, 949 flow [2022-11-16 11:59:35,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:35,920 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:35,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:35,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:59:35,921 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:35,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:35,922 INFO L85 PathProgramCache]: Analyzing trace with hash -103367591, now seen corresponding path program 1 times [2022-11-16 11:59:35,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:35,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757605293] [2022-11-16 11:59:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:35,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:59:36,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:36,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757605293] [2022-11-16 11:59:36,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757605293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:36,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:36,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:59:36,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678143975] [2022-11-16 11:59:36,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:36,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:59:36,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:36,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:59:36,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 11:59:36,089 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 418 out of 456 [2022-11-16 11:59:36,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 426 transitions, 949 flow. Second operand has 5 states, 5 states have (on average 419.8) internal successors, (2099), 5 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:36,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:36,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 418 of 456 [2022-11-16 11:59:36,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:36,999 INFO L130 PetriNetUnfolder]: 61/1722 cut-off events. [2022-11-16 11:59:36,999 INFO L131 PetriNetUnfolder]: For 65/81 co-relation queries the response was YES. [2022-11-16 11:59:37,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1893 conditions, 1722 events. 61/1722 cut-off events. For 65/81 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 12833 event pairs, 0 based on Foata normal form. 0/1478 useless extension candidates. Maximal degree in co-relation 1752. Up to 53 conditions per place. [2022-11-16 11:59:37,053 INFO L137 encePairwiseOnDemand]: 451/456 looper letters, 23 selfloop transitions, 4 changer transitions 0/428 dead transitions. [2022-11-16 11:59:37,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 428 transitions, 1007 flow [2022-11-16 11:59:37,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:59:37,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:59:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2112 transitions. [2022-11-16 11:59:37,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9263157894736842 [2022-11-16 11:59:37,060 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2112 transitions. [2022-11-16 11:59:37,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2112 transitions. [2022-11-16 11:59:37,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:37,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2112 transitions. [2022-11-16 11:59:37,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 422.4) internal successors, (2112), 5 states have internal predecessors, (2112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:37,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:37,074 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:37,075 INFO L175 Difference]: Start difference. First operand has 429 places, 426 transitions, 949 flow. Second operand 5 states and 2112 transitions. [2022-11-16 11:59:37,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 428 transitions, 1007 flow [2022-11-16 11:59:37,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 428 transitions, 1003 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:59:37,087 INFO L231 Difference]: Finished difference. Result has 433 places, 426 transitions, 957 flow [2022-11-16 11:59:37,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=428, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=957, PETRI_PLACES=433, PETRI_TRANSITIONS=426} [2022-11-16 11:59:37,092 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 22 predicate places. [2022-11-16 11:59:37,093 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 426 transitions, 957 flow [2022-11-16 11:59:37,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 419.8) internal successors, (2099), 5 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:37,094 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:37,094 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:37,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:59:37,095 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:37,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:37,096 INFO L85 PathProgramCache]: Analyzing trace with hash 771621186, now seen corresponding path program 1 times [2022-11-16 11:59:37,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:37,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143157244] [2022-11-16 11:59:37,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:37,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:37,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:59:37,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:37,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143157244] [2022-11-16 11:59:37,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143157244] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:59:37,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729004996] [2022-11-16 11:59:37,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:37,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:37,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:59:37,364 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:59:37,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:59:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:37,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:59:37,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:59:37,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:59:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:59:37,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729004996] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:59:37,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:59:37,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-16 11:59:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833655317] [2022-11-16 11:59:37,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:59:37,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 11:59:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:37,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 11:59:37,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:59:37,786 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 456 [2022-11-16 11:59:37,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 426 transitions, 957 flow. Second operand has 14 states, 14 states have (on average 415.85714285714283) internal successors, (5822), 14 states have internal predecessors, (5822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:37,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:37,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 456 [2022-11-16 11:59:37,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:38,260 INFO L130 PetriNetUnfolder]: 31/932 cut-off events. [2022-11-16 11:59:38,260 INFO L131 PetriNetUnfolder]: For 50/58 co-relation queries the response was YES. [2022-11-16 11:59:38,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 932 events. 31/932 cut-off events. For 50/58 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 5155 event pairs, 0 based on Foata normal form. 2/814 useless extension candidates. Maximal degree in co-relation 932. Up to 25 conditions per place. [2022-11-16 11:59:38,289 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 29 selfloop transitions, 13 changer transitions 0/435 dead transitions. [2022-11-16 11:59:38,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 435 transitions, 1063 flow [2022-11-16 11:59:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:59:38,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:59:38,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4581 transitions. [2022-11-16 11:59:38,390 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9132775119617225 [2022-11-16 11:59:38,390 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4581 transitions. [2022-11-16 11:59:38,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4581 transitions. [2022-11-16 11:59:38,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:38,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4581 transitions. [2022-11-16 11:59:38,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 416.45454545454544) internal successors, (4581), 11 states have internal predecessors, (4581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:38,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 456.0) internal successors, (5472), 12 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:38,415 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 456.0) internal successors, (5472), 12 states have internal predecessors, (5472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:38,415 INFO L175 Difference]: Start difference. First operand has 433 places, 426 transitions, 957 flow. Second operand 11 states and 4581 transitions. [2022-11-16 11:59:38,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 435 transitions, 1063 flow [2022-11-16 11:59:38,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 435 transitions, 1055 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:59:38,426 INFO L231 Difference]: Finished difference. Result has 442 places, 427 transitions, 996 flow [2022-11-16 11:59:38,427 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=996, PETRI_PLACES=442, PETRI_TRANSITIONS=427} [2022-11-16 11:59:38,430 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 31 predicate places. [2022-11-16 11:59:38,430 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 427 transitions, 996 flow [2022-11-16 11:59:38,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 415.85714285714283) internal successors, (5822), 14 states have internal predecessors, (5822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:38,433 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:38,433 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:38,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:38,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 11:59:38,640 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:38,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:38,640 INFO L85 PathProgramCache]: Analyzing trace with hash 874065923, now seen corresponding path program 2 times [2022-11-16 11:59:38,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:38,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875151967] [2022-11-16 11:59:38,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:38,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 11:59:38,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:38,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875151967] [2022-11-16 11:59:38,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875151967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:59:38,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899366324] [2022-11-16 11:59:38,974 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:59:38,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:38,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:59:38,976 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:59:39,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:59:39,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:59:39,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:59:39,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:59:39,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:59:39,291 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 11:59:39,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:59:39,485 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 11:59:39,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899366324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:59:39,485 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:59:39,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-16 11:59:39,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112169098] [2022-11-16 11:59:39,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:59:39,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:59:39,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:39,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:59:39,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:59:39,495 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 456 [2022-11-16 11:59:39,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 427 transitions, 996 flow. Second operand has 17 states, 17 states have (on average 416.94117647058823) internal successors, (7088), 17 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:39,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:39,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 456 [2022-11-16 11:59:39,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:40,011 INFO L130 PetriNetUnfolder]: 15/519 cut-off events. [2022-11-16 11:59:40,011 INFO L131 PetriNetUnfolder]: For 45/49 co-relation queries the response was YES. [2022-11-16 11:59:40,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 519 events. 15/519 cut-off events. For 45/49 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1859 event pairs, 0 based on Foata normal form. 1/460 useless extension candidates. Maximal degree in co-relation 612. Up to 9 conditions per place. [2022-11-16 11:59:40,027 INFO L137 encePairwiseOnDemand]: 449/456 looper letters, 21 selfloop transitions, 13 changer transitions 0/427 dead transitions. [2022-11-16 11:59:40,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 427 transitions, 1033 flow [2022-11-16 11:59:40,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:59:40,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-16 11:59:40,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6230 transitions. [2022-11-16 11:59:40,039 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9108187134502924 [2022-11-16 11:59:40,040 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6230 transitions. [2022-11-16 11:59:40,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6230 transitions. [2022-11-16 11:59:40,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:40,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6230 transitions. [2022-11-16 11:59:40,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 415.3333333333333) internal successors, (6230), 15 states have internal predecessors, (6230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:40,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 456.0) internal successors, (7296), 16 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:40,069 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 456.0) internal successors, (7296), 16 states have internal predecessors, (7296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:40,070 INFO L175 Difference]: Start difference. First operand has 442 places, 427 transitions, 996 flow. Second operand 15 states and 6230 transitions. [2022-11-16 11:59:40,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 427 transitions, 1033 flow [2022-11-16 11:59:40,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 427 transitions, 988 flow, removed 3 selfloop flow, removed 17 redundant places. [2022-11-16 11:59:40,078 INFO L231 Difference]: Finished difference. Result has 437 places, 420 transitions, 934 flow [2022-11-16 11:59:40,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=934, PETRI_PLACES=437, PETRI_TRANSITIONS=420} [2022-11-16 11:59:40,080 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 26 predicate places. [2022-11-16 11:59:40,080 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 420 transitions, 934 flow [2022-11-16 11:59:40,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 416.94117647058823) internal successors, (7088), 17 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:40,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:40,083 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:40,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:59:40,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_043c715f-0223-4afa-93ad-54a1be6d035d/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:59:40,294 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:40,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:40,295 INFO L85 PathProgramCache]: Analyzing trace with hash 420245282, now seen corresponding path program 2 times [2022-11-16 11:59:40,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:40,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477145872] [2022-11-16 11:59:40,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:40,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:40,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:40,447 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:59:40,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:40,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477145872] [2022-11-16 11:59:40,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477145872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:40,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:40,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:59:40,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988598365] [2022-11-16 11:59:40,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:40,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:59:40,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:40,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:59:40,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:59:40,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-16 11:59:40,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 420 transitions, 934 flow. Second operand has 6 states, 6 states have (on average 398.1666666666667) internal successors, (2389), 6 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:40,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:40,459 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-16 11:59:40,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:41,755 INFO L130 PetriNetUnfolder]: 815/3840 cut-off events. [2022-11-16 11:59:41,755 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-16 11:59:41,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5855 conditions, 3840 events. 815/3840 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 35255 event pairs, 117 based on Foata normal form. 0/3348 useless extension candidates. Maximal degree in co-relation 5843. Up to 976 conditions per place. [2022-11-16 11:59:41,832 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 49 selfloop transitions, 5 changer transitions 0/435 dead transitions. [2022-11-16 11:59:41,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 435 transitions, 1080 flow [2022-11-16 11:59:41,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:59:41,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:59:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2431 transitions. [2022-11-16 11:59:41,840 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8885233918128655 [2022-11-16 11:59:41,840 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2431 transitions. [2022-11-16 11:59:41,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2431 transitions. [2022-11-16 11:59:41,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:41,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2431 transitions. [2022-11-16 11:59:41,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 405.1666666666667) internal successors, (2431), 6 states have internal predecessors, (2431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:41,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:41,854 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:41,855 INFO L175 Difference]: Start difference. First operand has 437 places, 420 transitions, 934 flow. Second operand 6 states and 2431 transitions. [2022-11-16 11:59:41,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 435 transitions, 1080 flow [2022-11-16 11:59:41,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 435 transitions, 1055 flow, removed 1 selfloop flow, removed 12 redundant places. [2022-11-16 11:59:41,865 INFO L231 Difference]: Finished difference. Result has 429 places, 419 transitions, 917 flow [2022-11-16 11:59:41,866 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=917, PETRI_PLACES=429, PETRI_TRANSITIONS=419} [2022-11-16 11:59:41,868 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 18 predicate places. [2022-11-16 11:59:41,869 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 419 transitions, 917 flow [2022-11-16 11:59:41,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.1666666666667) internal successors, (2389), 6 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:41,871 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:41,871 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:41,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:59:41,872 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:41,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash 142702985, now seen corresponding path program 1 times [2022-11-16 11:59:41,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:41,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863438196] [2022-11-16 11:59:41,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:41,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:41,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:41,973 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:59:41,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:41,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863438196] [2022-11-16 11:59:41,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863438196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:41,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:41,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:59:41,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231391821] [2022-11-16 11:59:41,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:41,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:59:41,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:41,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:59:41,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:59:41,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 11:59:41,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 419 transitions, 917 flow. Second operand has 4 states, 4 states have (on average 408.75) internal successors, (1635), 4 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:41,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:41,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 11:59:41,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:42,606 INFO L130 PetriNetUnfolder]: 165/1809 cut-off events. [2022-11-16 11:59:42,606 INFO L131 PetriNetUnfolder]: For 26/30 co-relation queries the response was YES. [2022-11-16 11:59:42,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2345 conditions, 1809 events. 165/1809 cut-off events. For 26/30 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13671 event pairs, 48 based on Foata normal form. 0/1551 useless extension candidates. Maximal degree in co-relation 2333. Up to 140 conditions per place. [2022-11-16 11:59:42,651 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 37 selfloop transitions, 4 changer transitions 0/433 dead transitions. [2022-11-16 11:59:42,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 433 transitions, 1035 flow [2022-11-16 11:59:42,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:59:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:59:42,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1671 transitions. [2022-11-16 11:59:42,657 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9161184210526315 [2022-11-16 11:59:42,657 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1671 transitions. [2022-11-16 11:59:42,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1671 transitions. [2022-11-16 11:59:42,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:42,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1671 transitions. [2022-11-16 11:59:42,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.75) internal successors, (1671), 4 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:42,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:42,674 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:42,675 INFO L175 Difference]: Start difference. First operand has 429 places, 419 transitions, 917 flow. Second operand 4 states and 1671 transitions. [2022-11-16 11:59:42,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 433 transitions, 1035 flow [2022-11-16 11:59:42,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 427 places, 433 transitions, 1026 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:59:42,687 INFO L231 Difference]: Finished difference. Result has 430 places, 420 transitions, 932 flow [2022-11-16 11:59:42,688 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=906, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=932, PETRI_PLACES=430, PETRI_TRANSITIONS=420} [2022-11-16 11:59:42,689 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 19 predicate places. [2022-11-16 11:59:42,690 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 420 transitions, 932 flow [2022-11-16 11:59:42,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 408.75) internal successors, (1635), 4 states have internal predecessors, (1635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:42,691 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:42,691 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:42,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:59:42,692 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:42,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:42,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1634394061, now seen corresponding path program 1 times [2022-11-16 11:59:42,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:42,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323714464] [2022-11-16 11:59:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:42,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:42,870 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:59:42,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:42,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323714464] [2022-11-16 11:59:42,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323714464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:42,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:42,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:59:42,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961748482] [2022-11-16 11:59:42,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:42,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:59:42,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:42,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:59:42,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:59:42,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-16 11:59:42,880 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 420 transitions, 932 flow. Second operand has 4 states, 4 states have (on average 419.25) internal successors, (1677), 4 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:42,880 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:42,880 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-16 11:59:42,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:44,045 INFO L130 PetriNetUnfolder]: 186/1942 cut-off events. [2022-11-16 11:59:44,045 INFO L131 PetriNetUnfolder]: For 140/908 co-relation queries the response was YES. [2022-11-16 11:59:44,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2355 conditions, 1942 events. 186/1942 cut-off events. For 140/908 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 15521 event pairs, 21 based on Foata normal form. 0/1612 useless extension candidates. Maximal degree in co-relation 2341. Up to 175 conditions per place. [2022-11-16 11:59:44,147 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 27 selfloop transitions, 6 changer transitions 0/435 dead transitions. [2022-11-16 11:59:44,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 435 transitions, 1038 flow [2022-11-16 11:59:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:59:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:59:44,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2120 transitions. [2022-11-16 11:59:44,153 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9298245614035088 [2022-11-16 11:59:44,153 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2120 transitions. [2022-11-16 11:59:44,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2120 transitions. [2022-11-16 11:59:44,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:44,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2120 transitions. [2022-11-16 11:59:44,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 424.0) internal successors, (2120), 5 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:44,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:44,165 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:44,165 INFO L175 Difference]: Start difference. First operand has 430 places, 420 transitions, 932 flow. Second operand 5 states and 2120 transitions. [2022-11-16 11:59:44,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 435 transitions, 1038 flow [2022-11-16 11:59:44,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 435 transitions, 1038 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 11:59:44,175 INFO L231 Difference]: Finished difference. Result has 437 places, 423 transitions, 968 flow [2022-11-16 11:59:44,177 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=968, PETRI_PLACES=437, PETRI_TRANSITIONS=423} [2022-11-16 11:59:44,178 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 26 predicate places. [2022-11-16 11:59:44,178 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 423 transitions, 968 flow [2022-11-16 11:59:44,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.25) internal successors, (1677), 4 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:44,179 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:44,179 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:44,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:59:44,180 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:44,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash -809818599, now seen corresponding path program 1 times [2022-11-16 11:59:44,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:44,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897376853] [2022-11-16 11:59:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:44,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:59:44,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:44,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897376853] [2022-11-16 11:59:44,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897376853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:44,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:44,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:59:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335989342] [2022-11-16 11:59:44,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:44,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:59:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:59:44,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:59:44,361 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-16 11:59:44,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 423 transitions, 968 flow. Second operand has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:44,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:44,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-16 11:59:44,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:48,764 INFO L130 PetriNetUnfolder]: 3406/13321 cut-off events. [2022-11-16 11:59:48,764 INFO L131 PetriNetUnfolder]: For 1708/1876 co-relation queries the response was YES. [2022-11-16 11:59:48,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18996 conditions, 13321 events. 3406/13321 cut-off events. For 1708/1876 co-relation queries the response was YES. Maximal size of possible extension queue 1259. Compared 169276 event pairs, 522 based on Foata normal form. 0/10437 useless extension candidates. Maximal degree in co-relation 18978. Up to 3754 conditions per place. [2022-11-16 11:59:48,992 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 48 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-16 11:59:48,992 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 437 transitions, 1109 flow [2022-11-16 11:59:48,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:59:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:59:49,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2430 transitions. [2022-11-16 11:59:49,003 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8881578947368421 [2022-11-16 11:59:49,003 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2430 transitions. [2022-11-16 11:59:49,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2430 transitions. [2022-11-16 11:59:49,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:49,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2430 transitions. [2022-11-16 11:59:49,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 405.0) internal successors, (2430), 6 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:49,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:49,018 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:49,018 INFO L175 Difference]: Start difference. First operand has 437 places, 423 transitions, 968 flow. Second operand 6 states and 2430 transitions. [2022-11-16 11:59:49,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 437 transitions, 1109 flow [2022-11-16 11:59:49,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 437 transitions, 1105 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:59:49,031 INFO L231 Difference]: Finished difference. Result has 440 places, 422 transitions, 972 flow [2022-11-16 11:59:49,032 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=972, PETRI_PLACES=440, PETRI_TRANSITIONS=422} [2022-11-16 11:59:49,033 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 29 predicate places. [2022-11-16 11:59:49,033 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 422 transitions, 972 flow [2022-11-16 11:59:49,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.3333333333333) internal successors, (2390), 6 states have internal predecessors, (2390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:49,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:49,035 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:49,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:59:49,035 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:49,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:49,036 INFO L85 PathProgramCache]: Analyzing trace with hash 665428434, now seen corresponding path program 1 times [2022-11-16 11:59:49,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:49,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290882603] [2022-11-16 11:59:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:49,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:49,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:49,173 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:59:49,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:49,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290882603] [2022-11-16 11:59:49,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290882603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:49,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:49,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:59:49,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258197032] [2022-11-16 11:59:49,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:49,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:59:49,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:49,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:59:49,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:59:49,181 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 11:59:49,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 422 transitions, 972 flow. Second operand has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:49,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:49,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 11:59:49,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:50,341 INFO L130 PetriNetUnfolder]: 450/2802 cut-off events. [2022-11-16 11:59:50,342 INFO L131 PetriNetUnfolder]: For 410/1775 co-relation queries the response was YES. [2022-11-16 11:59:50,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3945 conditions, 2802 events. 450/2802 cut-off events. For 410/1775 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 27963 event pairs, 168 based on Foata normal form. 0/2191 useless extension candidates. Maximal degree in co-relation 3927. Up to 418 conditions per place. [2022-11-16 11:59:50,442 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 36 selfloop transitions, 4 changer transitions 0/435 dead transitions. [2022-11-16 11:59:50,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 435 transitions, 1085 flow [2022-11-16 11:59:50,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:59:50,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:59:50,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1670 transitions. [2022-11-16 11:59:50,447 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9155701754385965 [2022-11-16 11:59:50,448 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1670 transitions. [2022-11-16 11:59:50,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1670 transitions. [2022-11-16 11:59:50,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:50,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1670 transitions. [2022-11-16 11:59:50,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.5) internal successors, (1670), 4 states have internal predecessors, (1670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:50,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:50,620 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:50,621 INFO L175 Difference]: Start difference. First operand has 440 places, 422 transitions, 972 flow. Second operand 4 states and 1670 transitions. [2022-11-16 11:59:50,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 435 transitions, 1085 flow [2022-11-16 11:59:50,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 435 transitions, 1076 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:59:50,633 INFO L231 Difference]: Finished difference. Result has 441 places, 423 transitions, 987 flow [2022-11-16 11:59:50,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=987, PETRI_PLACES=441, PETRI_TRANSITIONS=423} [2022-11-16 11:59:50,650 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 30 predicate places. [2022-11-16 11:59:50,651 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 423 transitions, 987 flow [2022-11-16 11:59:50,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:50,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:50,652 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:50,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:59:50,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:50,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:50,654 INFO L85 PathProgramCache]: Analyzing trace with hash -152845199, now seen corresponding path program 1 times [2022-11-16 11:59:50,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:50,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597238960] [2022-11-16 11:59:50,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:50,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:50,832 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:59:50,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:50,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597238960] [2022-11-16 11:59:50,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597238960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:50,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:50,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:59:50,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591852894] [2022-11-16 11:59:50,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:50,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:59:50,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:50,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:59:50,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:59:50,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 11:59:50,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 423 transitions, 987 flow. Second operand has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:50,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:50,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 11:59:50,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:51,927 INFO L130 PetriNetUnfolder]: 164/2688 cut-off events. [2022-11-16 11:59:51,928 INFO L131 PetriNetUnfolder]: For 158/1065 co-relation queries the response was YES. [2022-11-16 11:59:51,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3482 conditions, 2688 events. 164/2688 cut-off events. For 158/1065 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 23552 event pairs, 48 based on Foata normal form. 14/2377 useless extension candidates. Maximal degree in co-relation 3462. Up to 152 conditions per place. [2022-11-16 11:59:51,996 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 37 selfloop transitions, 3 changer transitions 0/435 dead transitions. [2022-11-16 11:59:51,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 435 transitions, 1095 flow [2022-11-16 11:59:51,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:59:51,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:59:52,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1669 transitions. [2022-11-16 11:59:52,002 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150219298245614 [2022-11-16 11:59:52,002 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1669 transitions. [2022-11-16 11:59:52,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1669 transitions. [2022-11-16 11:59:52,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:52,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1669 transitions. [2022-11-16 11:59:52,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:52,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:52,010 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:52,010 INFO L175 Difference]: Start difference. First operand has 441 places, 423 transitions, 987 flow. Second operand 4 states and 1669 transitions. [2022-11-16 11:59:52,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 435 transitions, 1095 flow [2022-11-16 11:59:52,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 435 transitions, 1093 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:59:52,022 INFO L231 Difference]: Finished difference. Result has 443 places, 422 transitions, 985 flow [2022-11-16 11:59:52,023 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=985, PETRI_PLACES=443, PETRI_TRANSITIONS=422} [2022-11-16 11:59:52,023 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 32 predicate places. [2022-11-16 11:59:52,024 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 422 transitions, 985 flow [2022-11-16 11:59:52,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:52,025 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:52,025 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:52,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:59:52,026 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:52,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:52,026 INFO L85 PathProgramCache]: Analyzing trace with hash -443232721, now seen corresponding path program 1 times [2022-11-16 11:59:52,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:52,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833454188] [2022-11-16 11:59:52,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:52,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:52,233 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:59:52,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:52,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833454188] [2022-11-16 11:59:52,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833454188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:52,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:52,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:59:52,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160337604] [2022-11-16 11:59:52,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:52,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:59:52,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:59:52,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:59:52,241 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-16 11:59:52,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 422 transitions, 985 flow. Second operand has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:52,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:52,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-16 11:59:52,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:55,167 INFO L130 PetriNetUnfolder]: 1475/8722 cut-off events. [2022-11-16 11:59:55,167 INFO L131 PetriNetUnfolder]: For 377/408 co-relation queries the response was YES. [2022-11-16 11:59:55,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13223 conditions, 8722 events. 1475/8722 cut-off events. For 377/408 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 99271 event pairs, 180 based on Foata normal form. 4/7850 useless extension candidates. Maximal degree in co-relation 13203. Up to 1930 conditions per place. [2022-11-16 11:59:55,326 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 47 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-16 11:59:55,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 437 transitions, 1127 flow [2022-11-16 11:59:55,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:59:55,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 11:59:55,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2429 transitions. [2022-11-16 11:59:55,334 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877923976608187 [2022-11-16 11:59:55,334 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2429 transitions. [2022-11-16 11:59:55,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2429 transitions. [2022-11-16 11:59:55,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:55,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2429 transitions. [2022-11-16 11:59:55,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.8333333333333) internal successors, (2429), 6 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:55,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:55,349 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:55,349 INFO L175 Difference]: Start difference. First operand has 443 places, 422 transitions, 985 flow. Second operand 6 states and 2429 transitions. [2022-11-16 11:59:55,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 437 transitions, 1127 flow [2022-11-16 11:59:55,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 437 transitions, 1122 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 11:59:55,367 INFO L231 Difference]: Finished difference. Result has 445 places, 421 transitions, 988 flow [2022-11-16 11:59:55,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=988, PETRI_PLACES=445, PETRI_TRANSITIONS=421} [2022-11-16 11:59:55,369 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 34 predicate places. [2022-11-16 11:59:55,369 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 421 transitions, 988 flow [2022-11-16 11:59:55,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:55,371 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:55,371 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:55,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:59:55,371 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:55,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:55,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1272281293, now seen corresponding path program 1 times [2022-11-16 11:59:55,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:55,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530282669] [2022-11-16 11:59:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:55,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:55,513 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:59:55,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:55,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530282669] [2022-11-16 11:59:55,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530282669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:55,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:55,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:59:55,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395651841] [2022-11-16 11:59:55,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:55,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:59:55,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:55,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:59:55,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:59:55,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 417 out of 456 [2022-11-16 11:59:55,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 421 transitions, 988 flow. Second operand has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:55,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:55,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 417 of 456 [2022-11-16 11:59:55,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:58,231 INFO L130 PetriNetUnfolder]: 1065/9095 cut-off events. [2022-11-16 11:59:58,231 INFO L131 PetriNetUnfolder]: For 816/1261 co-relation queries the response was YES. [2022-11-16 11:59:58,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10837 conditions, 9095 events. 1065/9095 cut-off events. For 816/1261 co-relation queries the response was YES. Maximal size of possible extension queue 551. Compared 113142 event pairs, 420 based on Foata normal form. 3/7122 useless extension candidates. Maximal degree in co-relation 10817. Up to 940 conditions per place. [2022-11-16 11:59:58,348 INFO L137 encePairwiseOnDemand]: 448/456 looper letters, 26 selfloop transitions, 6 changer transitions 0/435 dead transitions. [2022-11-16 11:59:58,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 449 places, 435 transitions, 1086 flow [2022-11-16 11:59:58,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:59:58,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:59:58,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2119 transitions. [2022-11-16 11:59:58,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9293859649122806 [2022-11-16 11:59:58,353 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2119 transitions. [2022-11-16 11:59:58,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2119 transitions. [2022-11-16 11:59:58,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:58,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2119 transitions. [2022-11-16 11:59:58,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 423.8) internal successors, (2119), 5 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:58,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:58,364 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 456.0) internal successors, (2736), 6 states have internal predecessors, (2736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:58,364 INFO L175 Difference]: Start difference. First operand has 445 places, 421 transitions, 988 flow. Second operand 5 states and 2119 transitions. [2022-11-16 11:59:58,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 449 places, 435 transitions, 1086 flow [2022-11-16 11:59:58,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 435 transitions, 1077 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:59:58,373 INFO L231 Difference]: Finished difference. Result has 448 places, 424 transitions, 1015 flow [2022-11-16 11:59:58,374 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=415, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1015, PETRI_PLACES=448, PETRI_TRANSITIONS=424} [2022-11-16 11:59:58,375 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 37 predicate places. [2022-11-16 11:59:58,375 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 424 transitions, 1015 flow [2022-11-16 11:59:58,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 419.5) internal successors, (1678), 4 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:58,376 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:59:58,376 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:59:58,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:59:58,376 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 11:59:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:59:58,377 INFO L85 PathProgramCache]: Analyzing trace with hash -325223692, now seen corresponding path program 1 times [2022-11-16 11:59:58,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:59:58,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11944322] [2022-11-16 11:59:58,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:59:58,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:59:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:59:58,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 11:59:58,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:59:58,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11944322] [2022-11-16 11:59:58,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11944322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:59:58,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:59:58,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:59:58,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579643298] [2022-11-16 11:59:58,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:59:58,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:59:58,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:59:58,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:59:58,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:59:58,478 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 11:59:58,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 424 transitions, 1015 flow. Second operand has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:58,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:59:58,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 11:59:58,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:59:59,867 INFO L130 PetriNetUnfolder]: 205/3307 cut-off events. [2022-11-16 11:59:59,867 INFO L131 PetriNetUnfolder]: For 130/1885 co-relation queries the response was YES. [2022-11-16 11:59:59,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 3307 events. 205/3307 cut-off events. For 130/1885 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 31024 event pairs, 72 based on Foata normal form. 14/2916 useless extension candidates. Maximal degree in co-relation 4280. Up to 226 conditions per place. [2022-11-16 11:59:59,976 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 34 selfloop transitions, 3 changer transitions 0/436 dead transitions. [2022-11-16 11:59:59,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 436 transitions, 1119 flow [2022-11-16 11:59:59,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 11:59:59,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 11:59:59,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1666 transitions. [2022-11-16 11:59:59,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9133771929824561 [2022-11-16 11:59:59,980 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1666 transitions. [2022-11-16 11:59:59,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1666 transitions. [2022-11-16 11:59:59,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:59:59,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1666 transitions. [2022-11-16 11:59:59,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 416.5) internal successors, (1666), 4 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:59,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:59,990 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:59:59,990 INFO L175 Difference]: Start difference. First operand has 448 places, 424 transitions, 1015 flow. Second operand 4 states and 1666 transitions. [2022-11-16 11:59:59,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 436 transitions, 1119 flow [2022-11-16 11:59:59,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 436 transitions, 1113 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:00:00,001 INFO L231 Difference]: Finished difference. Result has 449 places, 424 transitions, 1018 flow [2022-11-16 12:00:00,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1018, PETRI_PLACES=449, PETRI_TRANSITIONS=424} [2022-11-16 12:00:00,003 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 38 predicate places. [2022-11-16 12:00:00,003 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 424 transitions, 1018 flow [2022-11-16 12:00:00,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:00,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:00,004 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:00,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:00:00,005 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 12:00:00,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:00,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1825742713, now seen corresponding path program 1 times [2022-11-16 12:00:00,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:00,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175950815] [2022-11-16 12:00:00,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:00,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:00,182 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 12:00:00,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:00,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175950815] [2022-11-16 12:00:00,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175950815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:00,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:00,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:00,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566058966] [2022-11-16 12:00:00,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:00,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:00,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:00,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:00,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:00,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-16 12:00:00,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 424 transitions, 1018 flow. Second operand has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:00,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:00,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-16 12:00:00,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:10,659 INFO L130 PetriNetUnfolder]: 8531/36059 cut-off events. [2022-11-16 12:00:10,660 INFO L131 PetriNetUnfolder]: For 5408/5479 co-relation queries the response was YES. [2022-11-16 12:00:11,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51991 conditions, 36059 events. 8531/36059 cut-off events. For 5408/5479 co-relation queries the response was YES. Maximal size of possible extension queue 2555. Compared 535479 event pairs, 1224 based on Foata normal form. 0/28577 useless extension candidates. Maximal degree in co-relation 51967. Up to 10146 conditions per place. [2022-11-16 12:00:11,462 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 47 selfloop transitions, 5 changer transitions 0/437 dead transitions. [2022-11-16 12:00:11,462 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 437 transitions, 1152 flow [2022-11-16 12:00:11,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:00:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:00:11,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2429 transitions. [2022-11-16 12:00:11,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877923976608187 [2022-11-16 12:00:11,467 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2429 transitions. [2022-11-16 12:00:11,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2429 transitions. [2022-11-16 12:00:11,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:11,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2429 transitions. [2022-11-16 12:00:11,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 404.8333333333333) internal successors, (2429), 6 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:11,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:11,477 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 456.0) internal successors, (3192), 7 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:11,478 INFO L175 Difference]: Start difference. First operand has 449 places, 424 transitions, 1018 flow. Second operand 6 states and 2429 transitions. [2022-11-16 12:00:11,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 437 transitions, 1152 flow [2022-11-16 12:00:11,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 437 transitions, 1150 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:00:11,500 INFO L231 Difference]: Finished difference. Result has 452 places, 423 transitions, 1024 flow [2022-11-16 12:00:11,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1014, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1024, PETRI_PLACES=452, PETRI_TRANSITIONS=423} [2022-11-16 12:00:11,502 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 41 predicate places. [2022-11-16 12:00:11,502 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 423 transitions, 1024 flow [2022-11-16 12:00:11,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 398.5) internal successors, (2391), 6 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:11,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:11,503 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:11,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:00:11,504 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 12:00:11,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:11,504 INFO L85 PathProgramCache]: Analyzing trace with hash 763450578, now seen corresponding path program 1 times [2022-11-16 12:00:11,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:11,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225660716] [2022-11-16 12:00:11,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:11,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:11,629 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 12:00:11,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:11,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225660716] [2022-11-16 12:00:11,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225660716] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:11,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:11,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:00:11,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378410354] [2022-11-16 12:00:11,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:11,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:00:11,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:11,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:00:11,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:00:11,636 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 12:00:11,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 423 transitions, 1024 flow. Second operand has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:11,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:11,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 12:00:11,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:15,788 INFO L130 PetriNetUnfolder]: 3371/13376 cut-off events. [2022-11-16 12:00:15,788 INFO L131 PetriNetUnfolder]: For 3324/5234 co-relation queries the response was YES. [2022-11-16 12:00:15,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20258 conditions, 13376 events. 3371/13376 cut-off events. For 3324/5234 co-relation queries the response was YES. Maximal size of possible extension queue 2078. Compared 197544 event pairs, 1344 based on Foata normal form. 4/9124 useless extension candidates. Maximal degree in co-relation 20234. Up to 3052 conditions per place. [2022-11-16 12:00:16,019 INFO L137 encePairwiseOnDemand]: 450/456 looper letters, 35 selfloop transitions, 4 changer transitions 0/435 dead transitions. [2022-11-16 12:00:16,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 435 transitions, 1130 flow [2022-11-16 12:00:16,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:00:16,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:00:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1669 transitions. [2022-11-16 12:00:16,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150219298245614 [2022-11-16 12:00:16,023 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1669 transitions. [2022-11-16 12:00:16,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1669 transitions. [2022-11-16 12:00:16,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:16,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1669 transitions. [2022-11-16 12:00:16,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.25) internal successors, (1669), 4 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:16,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:16,033 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:16,034 INFO L175 Difference]: Start difference. First operand has 452 places, 423 transitions, 1024 flow. Second operand 4 states and 1669 transitions. [2022-11-16 12:00:16,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 435 transitions, 1130 flow [2022-11-16 12:00:16,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 435 transitions, 1121 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:00:16,049 INFO L231 Difference]: Finished difference. Result has 453 places, 424 transitions, 1039 flow [2022-11-16 12:00:16,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1013, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1039, PETRI_PLACES=453, PETRI_TRANSITIONS=424} [2022-11-16 12:00:16,050 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 42 predicate places. [2022-11-16 12:00:16,050 INFO L495 AbstractCegarLoop]: Abstraction has has 453 places, 424 transitions, 1039 flow [2022-11-16 12:00:16,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.25) internal successors, (1637), 4 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:16,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:16,052 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:16,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:00:16,052 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 12:00:16,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:16,053 INFO L85 PathProgramCache]: Analyzing trace with hash -621427782, now seen corresponding path program 1 times [2022-11-16 12:00:16,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:16,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118410462] [2022-11-16 12:00:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:16,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:16,185 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 12:00:16,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:16,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118410462] [2022-11-16 12:00:16,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118410462] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:16,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:16,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:00:16,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043315318] [2022-11-16 12:00:16,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:16,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:00:16,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:00:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:00:16,191 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 456 [2022-11-16 12:00:16,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 424 transitions, 1039 flow. Second operand has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:16,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:16,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 456 [2022-11-16 12:00:16,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:19,006 INFO L130 PetriNetUnfolder]: 551/4105 cut-off events. [2022-11-16 12:00:19,007 INFO L131 PetriNetUnfolder]: For 790/2815 co-relation queries the response was YES. [2022-11-16 12:00:19,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5850 conditions, 4105 events. 551/4105 cut-off events. For 790/2815 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 45533 event pairs, 216 based on Foata normal form. 20/3320 useless extension candidates. Maximal degree in co-relation 5824. Up to 500 conditions per place. [2022-11-16 12:00:19,210 INFO L137 encePairwiseOnDemand]: 452/456 looper letters, 36 selfloop transitions, 3 changer transitions 0/435 dead transitions. [2022-11-16 12:00:19,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 435 transitions, 1142 flow [2022-11-16 12:00:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:00:19,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:00:19,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1668 transitions. [2022-11-16 12:00:19,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9144736842105263 [2022-11-16 12:00:19,212 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1668 transitions. [2022-11-16 12:00:19,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1668 transitions. [2022-11-16 12:00:19,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:19,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1668 transitions. [2022-11-16 12:00:19,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 417.0) internal successors, (1668), 4 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:19,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:19,219 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 456.0) internal successors, (2280), 5 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:19,219 INFO L175 Difference]: Start difference. First operand has 453 places, 424 transitions, 1039 flow. Second operand 4 states and 1668 transitions. [2022-11-16 12:00:19,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 435 transitions, 1142 flow [2022-11-16 12:00:19,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 435 transitions, 1140 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:00:19,231 INFO L231 Difference]: Finished difference. Result has 455 places, 423 transitions, 1037 flow [2022-11-16 12:00:19,232 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1037, PETRI_PLACES=455, PETRI_TRANSITIONS=423} [2022-11-16 12:00:19,232 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 44 predicate places. [2022-11-16 12:00:19,232 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 423 transitions, 1037 flow [2022-11-16 12:00:19,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 409.5) internal successors, (1638), 4 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:19,233 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:19,233 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:19,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:00:19,234 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 12:00:19,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash -2081742860, now seen corresponding path program 1 times [2022-11-16 12:00:19,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:19,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238602925] [2022-11-16 12:00:19,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:19,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:19,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 12:00:19,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:19,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238602925] [2022-11-16 12:00:19,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238602925] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:19,510 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:19,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:00:19,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145039537] [2022-11-16 12:00:19,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:19,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:00:19,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:19,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:00:19,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:00:19,515 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 391 out of 456 [2022-11-16 12:00:19,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 423 transitions, 1037 flow. Second operand has 8 states, 8 states have (on average 393.25) internal successors, (3146), 8 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:19,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:19,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 391 of 456 [2022-11-16 12:00:19,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:00:24,248 INFO L130 PetriNetUnfolder]: 1323/9623 cut-off events. [2022-11-16 12:00:24,248 INFO L131 PetriNetUnfolder]: For 778/19120 co-relation queries the response was YES. [2022-11-16 12:00:24,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13617 conditions, 9623 events. 1323/9623 cut-off events. For 778/19120 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 113448 event pairs, 172 based on Foata normal form. 18/8509 useless extension candidates. Maximal degree in co-relation 13591. Up to 1470 conditions per place. [2022-11-16 12:00:24,532 INFO L137 encePairwiseOnDemand]: 446/456 looper letters, 64 selfloop transitions, 9 changer transitions 0/455 dead transitions. [2022-11-16 12:00:24,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 455 transitions, 1261 flow [2022-11-16 12:00:24,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:00:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:00:24,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3202 transitions. [2022-11-16 12:00:24,535 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8777412280701754 [2022-11-16 12:00:24,535 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3202 transitions. [2022-11-16 12:00:24,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3202 transitions. [2022-11-16 12:00:24,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:00:24,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3202 transitions. [2022-11-16 12:00:24,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 400.25) internal successors, (3202), 8 states have internal predecessors, (3202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:24,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 456.0) internal successors, (4104), 9 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:24,546 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 456.0) internal successors, (4104), 9 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:24,546 INFO L175 Difference]: Start difference. First operand has 455 places, 423 transitions, 1037 flow. Second operand 8 states and 3202 transitions. [2022-11-16 12:00:24,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 455 transitions, 1261 flow [2022-11-16 12:00:24,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 455 transitions, 1256 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:00:24,561 INFO L231 Difference]: Finished difference. Result has 462 places, 424 transitions, 1062 flow [2022-11-16 12:00:24,562 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=456, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=414, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1062, PETRI_PLACES=462, PETRI_TRANSITIONS=424} [2022-11-16 12:00:24,562 INFO L288 CegarLoopForPetriNet]: 411 programPoint places, 51 predicate places. [2022-11-16 12:00:24,562 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 424 transitions, 1062 flow [2022-11-16 12:00:24,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 393.25) internal successors, (3146), 8 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:24,563 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:00:24,564 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:00:24,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:00:24,564 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-11-16 12:00:24,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:00:24,565 INFO L85 PathProgramCache]: Analyzing trace with hash -2084390810, now seen corresponding path program 1 times [2022-11-16 12:00:24,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:00:24,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367471602] [2022-11-16 12:00:24,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:00:24,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:00:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:00:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 12:00:24,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:00:24,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367471602] [2022-11-16 12:00:24,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367471602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:00:24,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:00:24,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:00:24,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112997793] [2022-11-16 12:00:24,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:00:24,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:00:24,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:00:24,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:00:24,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:00:24,716 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 456 [2022-11-16 12:00:24,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 424 transitions, 1062 flow. Second operand has 6 states, 6 states have (on average 398.6666666666667) internal successors, (2392), 6 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:00:24,718 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:00:24,718 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 456 [2022-11-16 12:00:24,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand