./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/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_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/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_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/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 a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 --- 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 11:37:17,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:37:17,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:37:17,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:37:17,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:37:17,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:37:17,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:37:17,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:37:17,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:37:17,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:37:17,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:37:18,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:37:18,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:37:18,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:37:18,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:37:18,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:37:18,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:37:18,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:37:18,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:37:18,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:37:18,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:37:18,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:37:18,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:37:18,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:37:18,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:37:18,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:37:18,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:37:18,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:37:18,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:37:18,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:37:18,050 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:37:18,051 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:37:18,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:37:18,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:37:18,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:37:18,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:37:18,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:37:18,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:37:18,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:37:18,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:37:18,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:37:18,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:37:18,106 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:37:18,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:37:18,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:37:18,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:37:18,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:37:18,108 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:37:18,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:37:18,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:37:18,110 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:37:18,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:37:18,111 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:37:18,111 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:37:18,112 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:37:18,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:37:18,112 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:37:18,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:37:18,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:37:18,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:37:18,113 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:37:18,113 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:37:18,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:37:18,114 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:37:18,114 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:37:18,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:37:18,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:37:18,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:37:18,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:37:18,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:37:18,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:37:18,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:37:18,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:37:18,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:37:18,116 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:37:18,117 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:37:18,117 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:37:18,117 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_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a5e93db72222dd521789305cbf7823ac91f269c62c97020d54f95f5ba14d3fd2 [2022-11-16 11:37:18,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:37:18,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:37:18,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:37:18,476 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:37:18,477 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:37:18,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread/stack-1.i [2022-11-16 11:37:18,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/data/2752ee14a/560d712371144aff9044a05641309742/FLAG836191c4c [2022-11-16 11:37:19,167 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:37:19,168 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/sv-benchmarks/c/pthread/stack-1.i [2022-11-16 11:37:19,186 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/data/2752ee14a/560d712371144aff9044a05641309742/FLAG836191c4c [2022-11-16 11:37:19,446 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/data/2752ee14a/560d712371144aff9044a05641309742 [2022-11-16 11:37:19,449 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:37:19,453 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:37:19,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:37:19,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:37:19,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:37:19,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:37:19" (1/1) ... [2022-11-16 11:37:19,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f8fbeaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:19, skipping insertion in model container [2022-11-16 11:37:19,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:37:19" (1/1) ... [2022-11-16 11:37:19,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:37:19,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:37:20,147 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_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2022-11-16 11:37:20,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:37:20,187 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:37:20,245 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_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/sv-benchmarks/c/pthread/stack-1.i[41520,41533] [2022-11-16 11:37:20,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:37:20,316 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:37:20,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20 WrapperNode [2022-11-16 11:37:20,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:37:20,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:37:20,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:37:20,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:37:20,328 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (1/1) ... [2022-11-16 11:37:20,354 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (1/1) ... [2022-11-16 11:37:20,395 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 162 [2022-11-16 11:37:20,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:37:20,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:37:20,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:37:20,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:37:20,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (1/1) ... [2022-11-16 11:37:20,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (1/1) ... [2022-11-16 11:37:20,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (1/1) ... [2022-11-16 11:37:20,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (1/1) ... [2022-11-16 11:37:20,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (1/1) ... [2022-11-16 11:37:20,455 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (1/1) ... [2022-11-16 11:37:20,467 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (1/1) ... [2022-11-16 11:37:20,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (1/1) ... [2022-11-16 11:37:20,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:37:20,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:37:20,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:37:20,487 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:37:20,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (1/1) ... [2022-11-16 11:37:20,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:37:20,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:20,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:37:20,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:37:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-16 11:37:20,584 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-16 11:37:20,584 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-16 11:37:20,585 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-16 11:37:20,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:37:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:37:20,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:37:20,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:37:20,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:37:20,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:37:20,596 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 11:37:20,822 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:37:20,825 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:37:21,320 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:37:21,331 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:37:21,331 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-16 11:37:21,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:37:21 BoogieIcfgContainer [2022-11-16 11:37:21,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:37:21,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:37:21,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:37:21,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:37:21,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:37:19" (1/3) ... [2022-11-16 11:37:21,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620a8f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:37:21, skipping insertion in model container [2022-11-16 11:37:21,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:37:20" (2/3) ... [2022-11-16 11:37:21,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@620a8f9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:37:21, skipping insertion in model container [2022-11-16 11:37:21,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:37:21" (3/3) ... [2022-11-16 11:37:21,346 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-1.i [2022-11-16 11:37:21,358 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:37:21,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:37:21,371 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-16 11:37:21,371 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:37:21,582 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:37:21,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 190 transitions, 396 flow [2022-11-16 11:37:21,851 INFO L130 PetriNetUnfolder]: 10/188 cut-off events. [2022-11-16 11:37:21,851 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:37:21,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 188 events. 10/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 482 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-11-16 11:37:21,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 190 transitions, 396 flow [2022-11-16 11:37:21,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 178 transitions, 365 flow [2022-11-16 11:37:21,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:37:21,901 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;@6315a5b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:37:21,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-16 11:37:21,948 INFO L130 PetriNetUnfolder]: 3/85 cut-off events. [2022-11-16 11:37:21,949 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-16 11:37:21,950 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:21,951 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:21,952 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:21,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:21,958 INFO L85 PathProgramCache]: Analyzing trace with hash -376074053, now seen corresponding path program 1 times [2022-11-16 11:37:21,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:21,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260486252] [2022-11-16 11:37:21,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:21,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:22,587 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 11:37:22,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:22,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260486252] [2022-11-16 11:37:22,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260486252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:22,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:22,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:22,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713540782] [2022-11-16 11:37:22,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:22,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:22,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:22,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:22,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:22,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 190 [2022-11-16 11:37:22,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 178 transitions, 365 flow. Second operand has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:22,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:22,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 190 [2022-11-16 11:37:22,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:22,864 INFO L130 PetriNetUnfolder]: 28/336 cut-off events. [2022-11-16 11:37:22,865 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-16 11:37:22,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414 conditions, 336 events. 28/336 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1548 event pairs, 10 based on Foata normal form. 41/342 useless extension candidates. Maximal degree in co-relation 361. Up to 36 conditions per place. [2022-11-16 11:37:22,872 INFO L137 encePairwiseOnDemand]: 178/190 looper letters, 19 selfloop transitions, 4 changer transitions 0/178 dead transitions. [2022-11-16 11:37:22,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 178 transitions, 420 flow [2022-11-16 11:37:22,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 882 transitions. [2022-11-16 11:37:22,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9284210526315789 [2022-11-16 11:37:22,893 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 882 transitions. [2022-11-16 11:37:22,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 882 transitions. [2022-11-16 11:37:22,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:22,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 882 transitions. [2022-11-16 11:37:22,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:22,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:22,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:22,924 INFO L175 Difference]: Start difference. First operand has 175 places, 178 transitions, 365 flow. Second operand 5 states and 882 transitions. [2022-11-16 11:37:22,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 178 transitions, 420 flow [2022-11-16 11:37:22,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 178 transitions, 409 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:37:22,934 INFO L231 Difference]: Finished difference. Result has 175 places, 172 transitions, 374 flow [2022-11-16 11:37:22,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=175, PETRI_TRANSITIONS=172} [2022-11-16 11:37:22,941 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 0 predicate places. [2022-11-16 11:37:22,941 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 172 transitions, 374 flow [2022-11-16 11:37:22,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:22,942 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:22,943 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] [2022-11-16 11:37:22,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:37:22,944 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:22,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:22,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1301651664, now seen corresponding path program 1 times [2022-11-16 11:37:22,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:22,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951299243] [2022-11-16 11:37:22,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:22,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:23,168 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 11:37:23,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:23,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951299243] [2022-11-16 11:37:23,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951299243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:23,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:23,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:23,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585920817] [2022-11-16 11:37:23,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:23,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:37:23,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:37:23,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:37:23,184 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 190 [2022-11-16 11:37:23,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 172 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:23,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:23,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 190 [2022-11-16 11:37:23,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:23,640 INFO L130 PetriNetUnfolder]: 144/1257 cut-off events. [2022-11-16 11:37:23,640 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-16 11:37:23,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 1257 events. 144/1257 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7623 event pairs, 63 based on Foata normal form. 0/1102 useless extension candidates. Maximal degree in co-relation 1239. Up to 191 conditions per place. [2022-11-16 11:37:23,659 INFO L137 encePairwiseOnDemand]: 185/190 looper letters, 20 selfloop transitions, 3 changer transitions 0/179 dead transitions. [2022-11-16 11:37:23,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 179 transitions, 437 flow [2022-11-16 11:37:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:37:23,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:37:23,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2022-11-16 11:37:23,663 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9175438596491228 [2022-11-16 11:37:23,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2022-11-16 11:37:23,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2022-11-16 11:37:23,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:23,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2022-11-16 11:37:23,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:23,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:23,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:23,671 INFO L175 Difference]: Start difference. First operand has 175 places, 172 transitions, 374 flow. Second operand 3 states and 523 transitions. [2022-11-16 11:37:23,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 179 transitions, 437 flow [2022-11-16 11:37:23,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 179 transitions, 435 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:37:23,683 INFO L231 Difference]: Finished difference. Result has 177 places, 173 transitions, 389 flow [2022-11-16 11:37:23,684 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=389, PETRI_PLACES=177, PETRI_TRANSITIONS=173} [2022-11-16 11:37:23,685 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 2 predicate places. [2022-11-16 11:37:23,686 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 173 transitions, 389 flow [2022-11-16 11:37:23,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 3 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:23,687 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:23,688 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:23,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:37:23,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:23,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:23,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1799117169, now seen corresponding path program 1 times [2022-11-16 11:37:23,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:23,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288656619] [2022-11-16 11:37:23,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:23,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:23,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:23,854 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:37:23,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:23,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288656619] [2022-11-16 11:37:23,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288656619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:23,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:23,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:23,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424988771] [2022-11-16 11:37:23,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:23,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:23,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:23,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:23,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:23,858 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 190 [2022-11-16 11:37:23,860 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 173 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:23,860 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:23,860 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 190 [2022-11-16 11:37:23,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:24,063 INFO L130 PetriNetUnfolder]: 96/792 cut-off events. [2022-11-16 11:37:24,063 INFO L131 PetriNetUnfolder]: For 115/116 co-relation queries the response was YES. [2022-11-16 11:37:24,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1083 conditions, 792 events. 96/792 cut-off events. For 115/116 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3680 event pairs, 12 based on Foata normal form. 7/721 useless extension candidates. Maximal degree in co-relation 1027. Up to 85 conditions per place. [2022-11-16 11:37:24,074 INFO L137 encePairwiseOnDemand]: 184/190 looper letters, 12 selfloop transitions, 8 changer transitions 0/176 dead transitions. [2022-11-16 11:37:24,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 176 transitions, 436 flow [2022-11-16 11:37:24,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:24,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 858 transitions. [2022-11-16 11:37:24,078 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9031578947368422 [2022-11-16 11:37:24,078 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 858 transitions. [2022-11-16 11:37:24,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 858 transitions. [2022-11-16 11:37:24,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:24,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 858 transitions. [2022-11-16 11:37:24,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,085 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,085 INFO L175 Difference]: Start difference. First operand has 177 places, 173 transitions, 389 flow. Second operand 5 states and 858 transitions. [2022-11-16 11:37:24,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 176 transitions, 436 flow [2022-11-16 11:37:24,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 176 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:37:24,094 INFO L231 Difference]: Finished difference. Result has 180 places, 173 transitions, 406 flow [2022-11-16 11:37:24,095 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=180, PETRI_TRANSITIONS=173} [2022-11-16 11:37:24,098 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 5 predicate places. [2022-11-16 11:37:24,098 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 173 transitions, 406 flow [2022-11-16 11:37:24,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,099 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:24,099 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:24,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:37:24,100 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:24,101 INFO L85 PathProgramCache]: Analyzing trace with hash 61943157, now seen corresponding path program 1 times [2022-11-16 11:37:24,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:24,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752886204] [2022-11-16 11:37:24,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:24,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:24,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:24,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752886204] [2022-11-16 11:37:24,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752886204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:24,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77973466] [2022-11-16 11:37:24,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:24,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:24,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:24,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:24,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:37:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:24,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:37:24,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:24,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:24,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:24,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77973466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:24,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:24,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:37:24,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679033494] [2022-11-16 11:37:24,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:24,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:37:24,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:37:24,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:37:24,561 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 190 [2022-11-16 11:37:24,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 173 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:24,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 190 [2022-11-16 11:37:24,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:24,886 INFO L130 PetriNetUnfolder]: 91/780 cut-off events. [2022-11-16 11:37:24,886 INFO L131 PetriNetUnfolder]: For 172/173 co-relation queries the response was YES. [2022-11-16 11:37:24,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 780 events. 91/780 cut-off events. For 172/173 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3595 event pairs, 8 based on Foata normal form. 7/714 useless extension candidates. Maximal degree in co-relation 1059. Up to 65 conditions per place. [2022-11-16 11:37:24,898 INFO L137 encePairwiseOnDemand]: 185/190 looper letters, 17 selfloop transitions, 6 changer transitions 0/179 dead transitions. [2022-11-16 11:37:24,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 179 transitions, 467 flow [2022-11-16 11:37:24,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:37:24,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:37:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1200 transitions. [2022-11-16 11:37:24,903 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9022556390977443 [2022-11-16 11:37:24,907 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1200 transitions. [2022-11-16 11:37:24,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1200 transitions. [2022-11-16 11:37:24,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:24,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1200 transitions. [2022-11-16 11:37:24,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.42857142857142) internal successors, (1200), 7 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,918 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,918 INFO L175 Difference]: Start difference. First operand has 180 places, 173 transitions, 406 flow. Second operand 7 states and 1200 transitions. [2022-11-16 11:37:24,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 179 transitions, 467 flow [2022-11-16 11:37:24,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 179 transitions, 455 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:37:24,927 INFO L231 Difference]: Finished difference. Result has 182 places, 172 transitions, 402 flow [2022-11-16 11:37:24,928 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=402, PETRI_PLACES=182, PETRI_TRANSITIONS=172} [2022-11-16 11:37:24,930 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 7 predicate places. [2022-11-16 11:37:24,930 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 172 transitions, 402 flow [2022-11-16 11:37:24,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.33333333333334) internal successors, (1022), 6 states have internal predecessors, (1022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:24,932 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:24,932 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] [2022-11-16 11:37:24,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:37:25,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:25,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:25,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:25,139 INFO L85 PathProgramCache]: Analyzing trace with hash 679851778, now seen corresponding path program 1 times [2022-11-16 11:37:25,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:25,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021722352] [2022-11-16 11:37:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:25,274 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 11:37:25,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:25,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021722352] [2022-11-16 11:37:25,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021722352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:25,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:25,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:25,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874701748] [2022-11-16 11:37:25,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:25,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:25,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:25,279 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 190 [2022-11-16 11:37:25,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 172 transitions, 402 flow. Second operand has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:25,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:25,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 190 [2022-11-16 11:37:25,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:25,768 INFO L130 PetriNetUnfolder]: 291/1802 cut-off events. [2022-11-16 11:37:25,769 INFO L131 PetriNetUnfolder]: For 238/277 co-relation queries the response was YES. [2022-11-16 11:37:25,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2721 conditions, 1802 events. 291/1802 cut-off events. For 238/277 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12612 event pairs, 129 based on Foata normal form. 7/1613 useless extension candidates. Maximal degree in co-relation 2278. Up to 389 conditions per place. [2022-11-16 11:37:25,787 INFO L137 encePairwiseOnDemand]: 183/190 looper letters, 42 selfloop transitions, 8 changer transitions 0/199 dead transitions. [2022-11-16 11:37:25,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 199 transitions, 569 flow [2022-11-16 11:37:25,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:25,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:25,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 852 transitions. [2022-11-16 11:37:25,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8968421052631579 [2022-11-16 11:37:25,791 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 852 transitions. [2022-11-16 11:37:25,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 852 transitions. [2022-11-16 11:37:25,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:25,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 852 transitions. [2022-11-16 11:37:25,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.4) internal successors, (852), 5 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:25,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:25,799 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:25,799 INFO L175 Difference]: Start difference. First operand has 182 places, 172 transitions, 402 flow. Second operand 5 states and 852 transitions. [2022-11-16 11:37:25,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 199 transitions, 569 flow [2022-11-16 11:37:25,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 199 transitions, 558 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:37:25,806 INFO L231 Difference]: Finished difference. Result has 184 places, 177 transitions, 443 flow [2022-11-16 11:37:25,806 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=443, PETRI_PLACES=184, PETRI_TRANSITIONS=177} [2022-11-16 11:37:25,810 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 9 predicate places. [2022-11-16 11:37:25,810 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 177 transitions, 443 flow [2022-11-16 11:37:25,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 161.75) internal successors, (647), 4 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:25,811 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:25,811 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:25,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:37:25,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:25,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:25,814 INFO L85 PathProgramCache]: Analyzing trace with hash -567579242, now seen corresponding path program 1 times [2022-11-16 11:37:25,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:25,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063686581] [2022-11-16 11:37:25,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:25,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:25,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:26,022 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 11:37:26,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:26,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063686581] [2022-11-16 11:37:26,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063686581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:26,023 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:26,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466047408] [2022-11-16 11:37:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:26,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:26,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:26,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:26,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:26,029 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 190 [2022-11-16 11:37:26,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 177 transitions, 443 flow. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:26,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:26,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 190 [2022-11-16 11:37:26,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:26,396 INFO L130 PetriNetUnfolder]: 63/1041 cut-off events. [2022-11-16 11:37:26,396 INFO L131 PetriNetUnfolder]: For 103/108 co-relation queries the response was YES. [2022-11-16 11:37:26,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1420 conditions, 1041 events. 63/1041 cut-off events. For 103/108 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5081 event pairs, 22 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 1152. Up to 56 conditions per place. [2022-11-16 11:37:26,413 INFO L137 encePairwiseOnDemand]: 183/190 looper letters, 19 selfloop transitions, 4 changer transitions 0/186 dead transitions. [2022-11-16 11:37:26,413 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 186 transitions, 513 flow [2022-11-16 11:37:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:26,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:26,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 866 transitions. [2022-11-16 11:37:26,417 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.911578947368421 [2022-11-16 11:37:26,417 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 866 transitions. [2022-11-16 11:37:26,417 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 866 transitions. [2022-11-16 11:37:26,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:26,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 866 transitions. [2022-11-16 11:37:26,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:26,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:26,425 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:26,425 INFO L175 Difference]: Start difference. First operand has 184 places, 177 transitions, 443 flow. Second operand 5 states and 866 transitions. [2022-11-16 11:37:26,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 186 transitions, 513 flow [2022-11-16 11:37:26,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 186 transitions, 508 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:37:26,432 INFO L231 Difference]: Finished difference. Result has 190 places, 180 transitions, 470 flow [2022-11-16 11:37:26,433 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=470, PETRI_PLACES=190, PETRI_TRANSITIONS=180} [2022-11-16 11:37:26,433 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 15 predicate places. [2022-11-16 11:37:26,434 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 180 transitions, 470 flow [2022-11-16 11:37:26,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:26,435 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:26,435 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] [2022-11-16 11:37:26,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:37:26,435 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:26,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1888903850, now seen corresponding path program 1 times [2022-11-16 11:37:26,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:26,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759458466] [2022-11-16 11:37:26,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:26,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:26,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:26,594 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 11:37:26,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:26,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759458466] [2022-11-16 11:37:26,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759458466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:26,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:26,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:26,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809010218] [2022-11-16 11:37:26,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:26,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:37:26,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:26,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:37:26,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:37:26,598 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 190 [2022-11-16 11:37:26,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 180 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:26,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:26,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 190 [2022-11-16 11:37:26,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:26,801 INFO L130 PetriNetUnfolder]: 38/958 cut-off events. [2022-11-16 11:37:26,801 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-16 11:37:26,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1243 conditions, 958 events. 38/958 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5125 event pairs, 13 based on Foata normal form. 10/925 useless extension candidates. Maximal degree in co-relation 896. Up to 39 conditions per place. [2022-11-16 11:37:26,811 INFO L137 encePairwiseOnDemand]: 186/190 looper letters, 12 selfloop transitions, 4 changer transitions 0/179 dead transitions. [2022-11-16 11:37:26,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 179 transitions, 490 flow [2022-11-16 11:37:26,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:37:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:37:26,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2022-11-16 11:37:26,815 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9157894736842105 [2022-11-16 11:37:26,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2022-11-16 11:37:26,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2022-11-16 11:37:26,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:26,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2022-11-16 11:37:26,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:26,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:26,820 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:26,820 INFO L175 Difference]: Start difference. First operand has 190 places, 180 transitions, 470 flow. Second operand 3 states and 522 transitions. [2022-11-16 11:37:26,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 179 transitions, 490 flow [2022-11-16 11:37:26,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 179 transitions, 483 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-16 11:37:26,827 INFO L231 Difference]: Finished difference. Result has 190 places, 177 transitions, 452 flow [2022-11-16 11:37:26,828 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=452, PETRI_PLACES=190, PETRI_TRANSITIONS=177} [2022-11-16 11:37:26,828 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 15 predicate places. [2022-11-16 11:37:26,829 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 177 transitions, 452 flow [2022-11-16 11:37:26,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:26,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:26,830 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] [2022-11-16 11:37:26,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:37:26,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:26,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:26,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1200001783, now seen corresponding path program 1 times [2022-11-16 11:37:26,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:26,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918598759] [2022-11-16 11:37:26,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:26,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:27,047 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 11:37:27,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:27,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918598759] [2022-11-16 11:37:27,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918598759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:27,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:27,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:37:27,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437166954] [2022-11-16 11:37:27,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:27,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:37:27,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:27,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:37:27,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:37:27,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 190 [2022-11-16 11:37:27,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 177 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 156.66666666666666) internal successors, (940), 6 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:27,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:27,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 190 [2022-11-16 11:37:27,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:27,480 INFO L130 PetriNetUnfolder]: 130/1339 cut-off events. [2022-11-16 11:37:27,481 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-11-16 11:37:27,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2028 conditions, 1339 events. 130/1339 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 7996 event pairs, 38 based on Foata normal form. 4/1287 useless extension candidates. Maximal degree in co-relation 1195. Up to 123 conditions per place. [2022-11-16 11:37:27,492 INFO L137 encePairwiseOnDemand]: 179/190 looper letters, 55 selfloop transitions, 11 changer transitions 0/212 dead transitions. [2022-11-16 11:37:27,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 212 transitions, 679 flow [2022-11-16 11:37:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:37:27,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:37:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1300 transitions. [2022-11-16 11:37:27,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8552631578947368 [2022-11-16 11:37:27,497 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1300 transitions. [2022-11-16 11:37:27,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1300 transitions. [2022-11-16 11:37:27,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:27,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1300 transitions. [2022-11-16 11:37:27,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 162.5) internal successors, (1300), 8 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:27,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:27,506 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:27,506 INFO L175 Difference]: Start difference. First operand has 190 places, 177 transitions, 452 flow. Second operand 8 states and 1300 transitions. [2022-11-16 11:37:27,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 212 transitions, 679 flow [2022-11-16 11:37:27,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 212 transitions, 675 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:37:27,513 INFO L231 Difference]: Finished difference. Result has 199 places, 183 transitions, 514 flow [2022-11-16 11:37:27,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=514, PETRI_PLACES=199, PETRI_TRANSITIONS=183} [2022-11-16 11:37:27,514 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 24 predicate places. [2022-11-16 11:37:27,515 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 183 transitions, 514 flow [2022-11-16 11:37:27,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 156.66666666666666) internal successors, (940), 6 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:27,516 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:27,516 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] [2022-11-16 11:37:27,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:37:27,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:27,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:27,517 INFO L85 PathProgramCache]: Analyzing trace with hash -211309718, now seen corresponding path program 1 times [2022-11-16 11:37:27,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:27,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801531927] [2022-11-16 11:37:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:27,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:27,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:27,601 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 11:37:27,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:27,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801531927] [2022-11-16 11:37:27,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801531927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:27,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:27,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:27,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563499205] [2022-11-16 11:37:27,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:27,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:27,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:27,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:27,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:27,605 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 190 [2022-11-16 11:37:27,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 183 transitions, 514 flow. Second operand has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:27,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:27,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 190 [2022-11-16 11:37:27,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:27,912 INFO L130 PetriNetUnfolder]: 102/1283 cut-off events. [2022-11-16 11:37:27,912 INFO L131 PetriNetUnfolder]: For 330/332 co-relation queries the response was YES. [2022-11-16 11:37:27,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 1283 events. 102/1283 cut-off events. For 330/332 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7121 event pairs, 24 based on Foata normal form. 22/1266 useless extension candidates. Maximal degree in co-relation 1569. Up to 114 conditions per place. [2022-11-16 11:37:27,923 INFO L137 encePairwiseOnDemand]: 181/190 looper letters, 28 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2022-11-16 11:37:27,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 187 transitions, 594 flow [2022-11-16 11:37:27,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:27,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:27,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 833 transitions. [2022-11-16 11:37:27,926 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8768421052631579 [2022-11-16 11:37:27,926 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 833 transitions. [2022-11-16 11:37:27,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 833 transitions. [2022-11-16 11:37:27,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:27,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 833 transitions. [2022-11-16 11:37:27,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.6) internal successors, (833), 5 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:27,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:27,932 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:27,932 INFO L175 Difference]: Start difference. First operand has 199 places, 183 transitions, 514 flow. Second operand 5 states and 833 transitions. [2022-11-16 11:37:27,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 187 transitions, 594 flow [2022-11-16 11:37:27,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 187 transitions, 588 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:37:27,938 INFO L231 Difference]: Finished difference. Result has 198 places, 180 transitions, 529 flow [2022-11-16 11:37:27,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=529, PETRI_PLACES=198, PETRI_TRANSITIONS=180} [2022-11-16 11:37:27,939 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 23 predicate places. [2022-11-16 11:37:27,939 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 180 transitions, 529 flow [2022-11-16 11:37:27,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:27,940 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:27,940 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 11:37:27,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:37:27,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:27,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:27,941 INFO L85 PathProgramCache]: Analyzing trace with hash -262181203, now seen corresponding path program 1 times [2022-11-16 11:37:27,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:27,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004912516] [2022-11-16 11:37:27,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:27,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:28,123 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:28,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:28,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004912516] [2022-11-16 11:37:28,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004912516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:28,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713209699] [2022-11-16 11:37:28,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:28,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:28,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:28,126 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:28,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:37:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:28,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:37:28,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:28,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:28,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:28,703 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:28,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713209699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:37:28,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:37:28,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:37:28,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65488197] [2022-11-16 11:37:28,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:37:28,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:37:28,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:37:28,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:37:28,722 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 190 [2022-11-16 11:37:28,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 180 transitions, 529 flow. Second operand has 12 states, 12 states have (on average 163.25) internal successors, (1959), 12 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:28,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:28,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 190 [2022-11-16 11:37:28,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:29,542 INFO L130 PetriNetUnfolder]: 159/2252 cut-off events. [2022-11-16 11:37:29,542 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2022-11-16 11:37:29,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3606 conditions, 2252 events. 159/2252 cut-off events. For 713/713 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 14650 event pairs, 32 based on Foata normal form. 25/2214 useless extension candidates. Maximal degree in co-relation 2872. Up to 107 conditions per place. [2022-11-16 11:37:29,564 INFO L137 encePairwiseOnDemand]: 179/190 looper letters, 78 selfloop transitions, 34 changer transitions 0/262 dead transitions. [2022-11-16 11:37:29,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 262 transitions, 1091 flow [2022-11-16 11:37:29,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 11:37:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 11:37:29,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3309 transitions. [2022-11-16 11:37:29,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8707894736842106 [2022-11-16 11:37:29,573 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3309 transitions. [2022-11-16 11:37:29,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3309 transitions. [2022-11-16 11:37:29,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:29,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3309 transitions. [2022-11-16 11:37:29,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 165.45) internal successors, (3309), 20 states have internal predecessors, (3309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,632 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 190.0) internal successors, (3990), 21 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,632 INFO L175 Difference]: Start difference. First operand has 198 places, 180 transitions, 529 flow. Second operand 20 states and 3309 transitions. [2022-11-16 11:37:29,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 262 transitions, 1091 flow [2022-11-16 11:37:29,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 262 transitions, 1069 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 11:37:29,643 INFO L231 Difference]: Finished difference. Result has 222 places, 207 transitions, 792 flow [2022-11-16 11:37:29,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=792, PETRI_PLACES=222, PETRI_TRANSITIONS=207} [2022-11-16 11:37:29,645 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 47 predicate places. [2022-11-16 11:37:29,646 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 207 transitions, 792 flow [2022-11-16 11:37:29,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 163.25) internal successors, (1959), 12 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:29,647 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:29,648 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 11:37:29,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:29,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:37:29,854 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:29,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:29,854 INFO L85 PathProgramCache]: Analyzing trace with hash 462317821, now seen corresponding path program 1 times [2022-11-16 11:37:29,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:29,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776922217] [2022-11-16 11:37:29,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:29,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:30,095 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:30,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:30,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776922217] [2022-11-16 11:37:30,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776922217] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:30,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162829902] [2022-11-16 11:37:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:30,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:30,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:30,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:30,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:37:30,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:30,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:37:30,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:30,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:30,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162829902] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:30,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:30,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:37:30,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741677194] [2022-11-16 11:37:30,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:30,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:37:30,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:30,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:37:30,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:37:30,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 190 [2022-11-16 11:37:30,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 207 transitions, 792 flow. Second operand has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:30,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:30,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 190 [2022-11-16 11:37:30,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:31,228 INFO L130 PetriNetUnfolder]: 154/2410 cut-off events. [2022-11-16 11:37:31,229 INFO L131 PetriNetUnfolder]: For 1498/1498 co-relation queries the response was YES. [2022-11-16 11:37:31,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 2410 events. 154/2410 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 15180 event pairs, 31 based on Foata normal form. 36/2376 useless extension candidates. Maximal degree in co-relation 3530. Up to 231 conditions per place. [2022-11-16 11:37:31,255 INFO L137 encePairwiseOnDemand]: 180/190 looper letters, 68 selfloop transitions, 20 changer transitions 0/238 dead transitions. [2022-11-16 11:37:31,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 238 transitions, 1154 flow [2022-11-16 11:37:31,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:37:31,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:37:31,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1328 transitions. [2022-11-16 11:37:31,259 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8736842105263158 [2022-11-16 11:37:31,260 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1328 transitions. [2022-11-16 11:37:31,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1328 transitions. [2022-11-16 11:37:31,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:31,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1328 transitions. [2022-11-16 11:37:31,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 166.0) internal successors, (1328), 8 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:31,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:31,269 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:31,269 INFO L175 Difference]: Start difference. First operand has 222 places, 207 transitions, 792 flow. Second operand 8 states and 1328 transitions. [2022-11-16 11:37:31,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 238 transitions, 1154 flow [2022-11-16 11:37:31,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 238 transitions, 1062 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 11:37:31,283 INFO L231 Difference]: Finished difference. Result has 227 places, 218 transitions, 923 flow [2022-11-16 11:37:31,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=923, PETRI_PLACES=227, PETRI_TRANSITIONS=218} [2022-11-16 11:37:31,285 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 52 predicate places. [2022-11-16 11:37:31,285 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 218 transitions, 923 flow [2022-11-16 11:37:31,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.66666666666666) internal successors, (976), 6 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:31,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:31,286 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:31,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:31,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:31,493 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:31,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:31,494 INFO L85 PathProgramCache]: Analyzing trace with hash -919026741, now seen corresponding path program 1 times [2022-11-16 11:37:31,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:31,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941470142] [2022-11-16 11:37:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:31,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:31,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:37:31,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:31,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941470142] [2022-11-16 11:37:31,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941470142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:31,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:31,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:37:31,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159777667] [2022-11-16 11:37:31,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:31,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:37:31,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:37:31,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:37:31,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 190 [2022-11-16 11:37:31,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 218 transitions, 923 flow. Second operand has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:31,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:31,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 190 [2022-11-16 11:37:31,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:32,280 INFO L130 PetriNetUnfolder]: 92/2104 cut-off events. [2022-11-16 11:37:32,281 INFO L131 PetriNetUnfolder]: For 993/993 co-relation queries the response was YES. [2022-11-16 11:37:32,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3353 conditions, 2104 events. 92/2104 cut-off events. For 993/993 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11613 event pairs, 7 based on Foata normal form. 19/2060 useless extension candidates. Maximal degree in co-relation 2922. Up to 107 conditions per place. [2022-11-16 11:37:32,305 INFO L137 encePairwiseOnDemand]: 184/190 looper letters, 12 selfloop transitions, 8 changer transitions 0/221 dead transitions. [2022-11-16 11:37:32,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 221 transitions, 973 flow [2022-11-16 11:37:32,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:37:32,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:37:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 858 transitions. [2022-11-16 11:37:32,308 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9031578947368422 [2022-11-16 11:37:32,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 858 transitions. [2022-11-16 11:37:32,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 858 transitions. [2022-11-16 11:37:32,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:32,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 858 transitions. [2022-11-16 11:37:32,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:32,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:32,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 190.0) internal successors, (1140), 6 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:32,315 INFO L175 Difference]: Start difference. First operand has 227 places, 218 transitions, 923 flow. Second operand 5 states and 858 transitions. [2022-11-16 11:37:32,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 221 transitions, 973 flow [2022-11-16 11:37:32,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 221 transitions, 953 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-16 11:37:32,328 INFO L231 Difference]: Finished difference. Result has 228 places, 218 transitions, 923 flow [2022-11-16 11:37:32,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=923, PETRI_PLACES=228, PETRI_TRANSITIONS=218} [2022-11-16 11:37:32,329 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 53 predicate places. [2022-11-16 11:37:32,330 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 218 transitions, 923 flow [2022-11-16 11:37:32,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.0) internal successors, (684), 4 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:32,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:32,331 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:32,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:37:32,331 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:32,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1574942616, now seen corresponding path program 1 times [2022-11-16 11:37:32,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:32,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180268695] [2022-11-16 11:37:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:32,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:32,519 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:32,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:32,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180268695] [2022-11-16 11:37:32,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180268695] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:32,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446207341] [2022-11-16 11:37:32,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:32,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:32,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:32,522 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:32,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:37:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:32,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:37:32,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:32,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:32,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446207341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:32,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:32,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:37:32,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592629506] [2022-11-16 11:37:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:32,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:37:32,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:32,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:37:32,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:37:32,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 190 [2022-11-16 11:37:32,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 218 transitions, 923 flow. Second operand has 6 states, 6 states have (on average 170.16666666666666) internal successors, (1021), 6 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:32,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:32,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 190 [2022-11-16 11:37:32,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:33,479 INFO L130 PetriNetUnfolder]: 88/2081 cut-off events. [2022-11-16 11:37:33,479 INFO L131 PetriNetUnfolder]: For 961/961 co-relation queries the response was YES. [2022-11-16 11:37:33,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3368 conditions, 2081 events. 88/2081 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11405 event pairs, 2 based on Foata normal form. 19/2037 useless extension candidates. Maximal degree in co-relation 2967. Up to 102 conditions per place. [2022-11-16 11:37:33,504 INFO L137 encePairwiseOnDemand]: 185/190 looper letters, 17 selfloop transitions, 6 changer transitions 3/224 dead transitions. [2022-11-16 11:37:33,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 224 transitions, 989 flow [2022-11-16 11:37:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:37:33,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:37:33,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1200 transitions. [2022-11-16 11:37:33,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9022556390977443 [2022-11-16 11:37:33,508 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1200 transitions. [2022-11-16 11:37:33,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1200 transitions. [2022-11-16 11:37:33,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:33,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1200 transitions. [2022-11-16 11:37:33,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.42857142857142) internal successors, (1200), 7 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:33,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:33,516 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 190.0) internal successors, (1520), 8 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:33,517 INFO L175 Difference]: Start difference. First operand has 228 places, 218 transitions, 923 flow. Second operand 7 states and 1200 transitions. [2022-11-16 11:37:33,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 224 transitions, 989 flow [2022-11-16 11:37:33,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 224 transitions, 977 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:37:33,531 INFO L231 Difference]: Finished difference. Result has 230 places, 214 transitions, 913 flow [2022-11-16 11:37:33,532 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=913, PETRI_PLACES=230, PETRI_TRANSITIONS=214} [2022-11-16 11:37:33,532 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 55 predicate places. [2022-11-16 11:37:33,533 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 214 transitions, 913 flow [2022-11-16 11:37:33,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.16666666666666) internal successors, (1021), 6 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:33,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:33,534 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:33,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:33,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:33,741 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:33,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:33,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1257411250, now seen corresponding path program 1 times [2022-11-16 11:37:33,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:33,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399958912] [2022-11-16 11:37:33,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:33,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:33,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:34,056 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:34,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:34,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399958912] [2022-11-16 11:37:34,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399958912] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:34,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749640860] [2022-11-16 11:37:34,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:34,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:34,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:34,061 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:34,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:37:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:34,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:37:34,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:34,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:34,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749640860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:37:34,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:37:34,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 11:37:34,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422757338] [2022-11-16 11:37:34,845 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:37:34,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:37:34,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:34,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:37:34,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:37:34,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 190 [2022-11-16 11:37:34,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 214 transitions, 913 flow. Second operand has 16 states, 16 states have (on average 157.625) internal successors, (2522), 16 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 11:37:34,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:34,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 190 [2022-11-16 11:37:34,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:36,191 INFO L130 PetriNetUnfolder]: 219/2735 cut-off events. [2022-11-16 11:37:36,191 INFO L131 PetriNetUnfolder]: For 1909/1909 co-relation queries the response was YES. [2022-11-16 11:37:36,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4796 conditions, 2735 events. 219/2735 cut-off events. For 1909/1909 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 18975 event pairs, 55 based on Foata normal form. 37/2701 useless extension candidates. Maximal degree in co-relation 4316. Up to 126 conditions per place. [2022-11-16 11:37:36,230 INFO L137 encePairwiseOnDemand]: 177/190 looper letters, 90 selfloop transitions, 62 changer transitions 1/293 dead transitions. [2022-11-16 11:37:36,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 293 transitions, 1536 flow [2022-11-16 11:37:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:37:36,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:37:36,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3818 transitions. [2022-11-16 11:37:36,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.837280701754386 [2022-11-16 11:37:36,246 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3818 transitions. [2022-11-16 11:37:36,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3818 transitions. [2022-11-16 11:37:36,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:36,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3818 transitions. [2022-11-16 11:37:36,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 159.08333333333334) internal successors, (3818), 24 states have internal predecessors, (3818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:36,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 190.0) internal successors, (4750), 25 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:36,270 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 190.0) internal successors, (4750), 25 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:36,270 INFO L175 Difference]: Start difference. First operand has 230 places, 214 transitions, 913 flow. Second operand 24 states and 3818 transitions. [2022-11-16 11:37:36,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 293 transitions, 1536 flow [2022-11-16 11:37:36,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 293 transitions, 1525 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-16 11:37:36,287 INFO L231 Difference]: Finished difference. Result has 248 places, 229 transitions, 1161 flow [2022-11-16 11:37:36,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1161, PETRI_PLACES=248, PETRI_TRANSITIONS=229} [2022-11-16 11:37:36,288 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 73 predicate places. [2022-11-16 11:37:36,288 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 229 transitions, 1161 flow [2022-11-16 11:37:36,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 157.625) internal successors, (2522), 16 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 11:37:36,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:36,290 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:37:36,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:36,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:36,497 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:36,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:36,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1046283323, now seen corresponding path program 1 times [2022-11-16 11:37:36,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:36,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634743060] [2022-11-16 11:37:36,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:36,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:36,677 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:36,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:36,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634743060] [2022-11-16 11:37:36,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634743060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:36,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:37:36,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 11:37:36,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183309126] [2022-11-16 11:37:36,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:36,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:37:36,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:36,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:37:36,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 11:37:36,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 190 [2022-11-16 11:37:36,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 229 transitions, 1161 flow. Second operand has 6 states, 6 states have (on average 158.33333333333334) internal successors, (950), 6 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:36,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:36,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 190 [2022-11-16 11:37:36,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:37,590 INFO L130 PetriNetUnfolder]: 216/2853 cut-off events. [2022-11-16 11:37:37,591 INFO L131 PetriNetUnfolder]: For 2487/2487 co-relation queries the response was YES. [2022-11-16 11:37:37,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5155 conditions, 2853 events. 216/2853 cut-off events. For 2487/2487 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 20305 event pairs, 45 based on Foata normal form. 24/2806 useless extension candidates. Maximal degree in co-relation 4691. Up to 297 conditions per place. [2022-11-16 11:37:37,627 INFO L137 encePairwiseOnDemand]: 179/190 looper letters, 49 selfloop transitions, 45 changer transitions 2/236 dead transitions. [2022-11-16 11:37:37,627 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 236 transitions, 1347 flow [2022-11-16 11:37:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:37:37,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:37:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1275 transitions. [2022-11-16 11:37:37,631 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8388157894736842 [2022-11-16 11:37:37,631 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1275 transitions. [2022-11-16 11:37:37,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1275 transitions. [2022-11-16 11:37:37,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:37,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1275 transitions. [2022-11-16 11:37:37,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.375) internal successors, (1275), 8 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:37,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:37,640 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:37,640 INFO L175 Difference]: Start difference. First operand has 248 places, 229 transitions, 1161 flow. Second operand 8 states and 1275 transitions. [2022-11-16 11:37:37,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 236 transitions, 1347 flow [2022-11-16 11:37:37,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 236 transitions, 1294 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-16 11:37:37,658 INFO L231 Difference]: Finished difference. Result has 244 places, 222 transitions, 1178 flow [2022-11-16 11:37:37,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1178, PETRI_PLACES=244, PETRI_TRANSITIONS=222} [2022-11-16 11:37:37,659 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 69 predicate places. [2022-11-16 11:37:37,659 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 222 transitions, 1178 flow [2022-11-16 11:37:37,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.33333333333334) internal successors, (950), 6 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:37,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:37,660 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-16 11:37:37,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:37:37,661 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:37,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:37,662 INFO L85 PathProgramCache]: Analyzing trace with hash 880762463, now seen corresponding path program 1 times [2022-11-16 11:37:37,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:37,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831362465] [2022-11-16 11:37:37,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:37,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 219 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:37:38,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:38,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831362465] [2022-11-16 11:37:38,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831362465] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:38,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543501152] [2022-11-16 11:37:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:38,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:38,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:38,203 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:38,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:37:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:38,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:37:38,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:38,830 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-16 11:37:38,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-16 11:37:39,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543501152] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:37:39,349 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:37:39,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-16 11:37:39,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126403282] [2022-11-16 11:37:39,350 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:37:39,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:37:39,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:37:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:37:39,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 190 [2022-11-16 11:37:39,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 222 transitions, 1178 flow. Second operand has 18 states, 18 states have (on average 158.22222222222223) internal successors, (2848), 18 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:39,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:39,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 190 [2022-11-16 11:37:39,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:41,308 INFO L130 PetriNetUnfolder]: 342/4683 cut-off events. [2022-11-16 11:37:41,308 INFO L131 PetriNetUnfolder]: For 5030/5030 co-relation queries the response was YES. [2022-11-16 11:37:41,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8657 conditions, 4683 events. 342/4683 cut-off events. For 5030/5030 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 36336 event pairs, 82 based on Foata normal form. 24/4586 useless extension candidates. Maximal degree in co-relation 8176. Up to 202 conditions per place. [2022-11-16 11:37:41,348 INFO L137 encePairwiseOnDemand]: 178/190 looper letters, 139 selfloop transitions, 91 changer transitions 5/375 dead transitions. [2022-11-16 11:37:41,348 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 375 transitions, 2656 flow [2022-11-16 11:37:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 11:37:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-16 11:37:41,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4471 transitions. [2022-11-16 11:37:41,356 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8404135338345865 [2022-11-16 11:37:41,356 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4471 transitions. [2022-11-16 11:37:41,356 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4471 transitions. [2022-11-16 11:37:41,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:41,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4471 transitions. [2022-11-16 11:37:41,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 159.67857142857142) internal successors, (4471), 28 states have internal predecessors, (4471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:41,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:41,377 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 190.0) internal successors, (5510), 29 states have internal predecessors, (5510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:41,377 INFO L175 Difference]: Start difference. First operand has 244 places, 222 transitions, 1178 flow. Second operand 28 states and 4471 transitions. [2022-11-16 11:37:41,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 375 transitions, 2656 flow [2022-11-16 11:37:41,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 375 transitions, 2560 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-16 11:37:41,404 INFO L231 Difference]: Finished difference. Result has 277 places, 273 transitions, 2008 flow [2022-11-16 11:37:41,404 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1131, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2008, PETRI_PLACES=277, PETRI_TRANSITIONS=273} [2022-11-16 11:37:41,405 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 102 predicate places. [2022-11-16 11:37:41,405 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 273 transitions, 2008 flow [2022-11-16 11:37:41,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 158.22222222222223) internal successors, (2848), 18 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:41,406 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:41,406 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:41,422 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-16 11:37:41,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 11:37:41,612 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:41,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:41,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1375926725, now seen corresponding path program 1 times [2022-11-16 11:37:41,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:41,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110516486] [2022-11-16 11:37:41,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:41,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 11:37:42,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:42,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110516486] [2022-11-16 11:37:42,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110516486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:42,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790005663] [2022-11-16 11:37:42,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:42,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:42,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:42,624 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:42,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:37:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:42,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 11:37:42,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 11:37:43,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:37:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-16 11:37:44,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790005663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:37:44,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:37:44,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-16 11:37:44,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948464957] [2022-11-16 11:37:44,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:37:44,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 11:37:44,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:44,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 11:37:44,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:37:44,144 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 190 [2022-11-16 11:37:44,148 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 273 transitions, 2008 flow. Second operand has 22 states, 22 states have (on average 158.63636363636363) internal successors, (3490), 22 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:44,148 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:44,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 190 [2022-11-16 11:37:44,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:46,976 INFO L130 PetriNetUnfolder]: 479/6357 cut-off events. [2022-11-16 11:37:46,977 INFO L131 PetriNetUnfolder]: For 10590/10590 co-relation queries the response was YES. [2022-11-16 11:37:47,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12336 conditions, 6357 events. 479/6357 cut-off events. For 10590/10590 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 51923 event pairs, 128 based on Foata normal form. 29/6213 useless extension candidates. Maximal degree in co-relation 11624. Up to 316 conditions per place. [2022-11-16 11:37:47,030 INFO L137 encePairwiseOnDemand]: 179/190 looper letters, 159 selfloop transitions, 178 changer transitions 2/479 dead transitions. [2022-11-16 11:37:47,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 479 transitions, 4301 flow [2022-11-16 11:37:47,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-16 11:37:47,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-16 11:37:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5576 transitions. [2022-11-16 11:37:47,040 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8384962406015037 [2022-11-16 11:37:47,040 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5576 transitions. [2022-11-16 11:37:47,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5576 transitions. [2022-11-16 11:37:47,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:47,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5576 transitions. [2022-11-16 11:37:47,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 159.31428571428572) internal successors, (5576), 35 states have internal predecessors, (5576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:47,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 190.0) internal successors, (6840), 36 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:47,069 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 190.0) internal successors, (6840), 36 states have internal predecessors, (6840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:47,069 INFO L175 Difference]: Start difference. First operand has 277 places, 273 transitions, 2008 flow. Second operand 35 states and 5576 transitions. [2022-11-16 11:37:47,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 479 transitions, 4301 flow [2022-11-16 11:37:47,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 479 transitions, 4196 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-16 11:37:47,133 INFO L231 Difference]: Finished difference. Result has 314 places, 355 transitions, 3460 flow [2022-11-16 11:37:47,133 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=1935, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3460, PETRI_PLACES=314, PETRI_TRANSITIONS=355} [2022-11-16 11:37:47,134 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 139 predicate places. [2022-11-16 11:37:47,134 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 355 transitions, 3460 flow [2022-11-16 11:37:47,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 158.63636363636363) internal successors, (3490), 22 states have internal predecessors, (3490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:47,136 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:37:47,136 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:47,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:47,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 11:37:47,345 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-16 11:37:47,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:37:47,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1936933956, now seen corresponding path program 2 times [2022-11-16 11:37:47,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:37:47,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509825838] [2022-11-16 11:37:47,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:37:47,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:37:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:37:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:37:48,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:37:48,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509825838] [2022-11-16 11:37:48,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509825838] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:37:48,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775589694] [2022-11-16 11:37:48,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:37:48,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:37:48,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:37:48,396 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:37:48,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:37:48,662 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 11:37:48,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:37:48,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 11:37:48,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:37:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 841 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-16 11:37:49,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:37:49,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775589694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:37:49,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:37:49,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 27 [2022-11-16 11:37:49,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521357138] [2022-11-16 11:37:49,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:37:49,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 11:37:49,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:37:49,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 11:37:49,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=584, Unknown=0, NotChecked=0, Total=702 [2022-11-16 11:37:49,317 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 190 [2022-11-16 11:37:49,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 355 transitions, 3460 flow. Second operand has 13 states, 13 states have (on average 171.07692307692307) internal successors, (2224), 13 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:49,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:37:49,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 190 [2022-11-16 11:37:49,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:37:51,125 INFO L130 PetriNetUnfolder]: 131/5402 cut-off events. [2022-11-16 11:37:51,125 INFO L131 PetriNetUnfolder]: For 7623/7623 co-relation queries the response was YES. [2022-11-16 11:37:51,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9811 conditions, 5402 events. 131/5402 cut-off events. For 7623/7623 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 39968 event pairs, 2 based on Foata normal form. 27/5296 useless extension candidates. Maximal degree in co-relation 9761. Up to 144 conditions per place. [2022-11-16 11:37:51,171 INFO L137 encePairwiseOnDemand]: 184/190 looper letters, 0 selfloop transitions, 0 changer transitions 333/333 dead transitions. [2022-11-16 11:37:51,171 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 333 transitions, 2721 flow [2022-11-16 11:37:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:37:51,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:37:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3081 transitions. [2022-11-16 11:37:51,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9008771929824562 [2022-11-16 11:37:51,180 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3081 transitions. [2022-11-16 11:37:51,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3081 transitions. [2022-11-16 11:37:51,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:37:51,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3081 transitions. [2022-11-16 11:37:51,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.16666666666666) internal successors, (3081), 18 states have internal predecessors, (3081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:51,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 190.0) internal successors, (3610), 19 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:51,195 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 190.0) internal successors, (3610), 19 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:51,195 INFO L175 Difference]: Start difference. First operand has 314 places, 355 transitions, 3460 flow. Second operand 18 states and 3081 transitions. [2022-11-16 11:37:51,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 333 transitions, 2721 flow [2022-11-16 11:37:51,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 333 transitions, 2483 flow, removed 31 selfloop flow, removed 27 redundant places. [2022-11-16 11:37:51,242 INFO L231 Difference]: Finished difference. Result has 295 places, 0 transitions, 0 flow [2022-11-16 11:37:51,243 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=190, PETRI_DIFFERENCE_MINUEND_FLOW=2215, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=295, PETRI_TRANSITIONS=0} [2022-11-16 11:37:51,243 INFO L288 CegarLoopForPetriNet]: 175 programPoint places, 120 predicate places. [2022-11-16 11:37:51,244 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 0 transitions, 0 flow [2022-11-16 11:37:51,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 171.07692307692307) internal successors, (2224), 13 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:37:51,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2022-11-16 11:37:51,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 18 remaining) [2022-11-16 11:37:51,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2022-11-16 11:37:51,248 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2022-11-16 11:37:51,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 18 remaining) [2022-11-16 11:37:51,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2022-11-16 11:37:51,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2022-11-16 11:37:51,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2022-11-16 11:37:51,249 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2022-11-16 11:37:51,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2022-11-16 11:37:51,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2022-11-16 11:37:51,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2022-11-16 11:37:51,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2022-11-16 11:37:51,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2022-11-16 11:37:51,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2022-11-16 11:37:51,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2022-11-16 11:37:51,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2022-11-16 11:37:51,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2022-11-16 11:37:51,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:37:51,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:37:51,459 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:37:51,466 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:37:51,467 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:37:51,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:37:51 BasicIcfg [2022-11-16 11:37:51,472 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:37:51,473 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:37:51,473 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:37:51,473 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:37:51,474 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:37:21" (3/4) ... [2022-11-16 11:37:51,476 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:37:51,483 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-16 11:37:51,483 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-16 11:37:51,489 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-16 11:37:51,489 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-16 11:37:51,489 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:37:51,489 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:37:51,520 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:37:51,520 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:37:51,521 INFO L158 Benchmark]: Toolchain (without parser) took 32067.60ms. Allocated memory was 132.1MB in the beginning and 822.1MB in the end (delta: 690.0MB). Free memory was 90.9MB in the beginning and 280.3MB in the end (delta: -189.4MB). Peak memory consumption was 499.1MB. Max. memory is 16.1GB. [2022-11-16 11:37:51,521 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:37:51,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 862.07ms. Allocated memory is still 132.1MB. Free memory was 90.7MB in the beginning and 87.2MB in the end (delta: 3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 11:37:51,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.86ms. Allocated memory is still 132.1MB. Free memory was 87.2MB in the beginning and 84.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:37:51,522 INFO L158 Benchmark]: Boogie Preprocessor took 76.11ms. Allocated memory is still 132.1MB. Free memory was 84.3MB in the beginning and 82.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:37:51,522 INFO L158 Benchmark]: RCFGBuilder took 861.14ms. Allocated memory is still 132.1MB. Free memory was 82.2MB in the beginning and 64.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-16 11:37:51,523 INFO L158 Benchmark]: TraceAbstraction took 30135.09ms. Allocated memory was 132.1MB in the beginning and 822.1MB in the end (delta: 690.0MB). Free memory was 64.0MB in the beginning and 283.4MB in the end (delta: -219.5MB). Peak memory consumption was 473.6MB. Max. memory is 16.1GB. [2022-11-16 11:37:51,523 INFO L158 Benchmark]: Witness Printer took 47.39ms. Allocated memory is still 822.1MB. Free memory was 283.4MB in the beginning and 280.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:37:51,525 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 132.1MB. Free memory is still 110.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 862.07ms. Allocated memory is still 132.1MB. Free memory was 90.7MB in the beginning and 87.2MB in the end (delta: 3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.86ms. Allocated memory is still 132.1MB. Free memory was 87.2MB in the beginning and 84.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 76.11ms. Allocated memory is still 132.1MB. Free memory was 84.3MB in the beginning and 82.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 861.14ms. Allocated memory is still 132.1MB. Free memory was 82.2MB in the beginning and 64.6MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 30135.09ms. Allocated memory was 132.1MB in the beginning and 822.1MB in the end (delta: 690.0MB). Free memory was 64.0MB in the beginning and 283.4MB in the end (delta: -219.5MB). Peak memory consumption was 473.6MB. Max. memory is 16.1GB. * Witness Printer took 47.39ms. Allocated memory is still 822.1MB. Free memory was 283.4MB in the beginning and 280.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 992]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 946]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1006]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 950]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 304 locations, 18 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 29.8s, OverallIterations: 18, TraceHistogramMax: 7, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 15.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 944 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 944 mSDsluCounter, 388 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 259 mSDsCounter, 123 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1704 IncrementalHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 123 mSolverCounterUnsat, 129 mSDtfsCounter, 1704 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2570 GetRequests, 2343 SyntacticMatches, 1 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3460occurred in iteration=17, InterpolantAutomatonStates: 199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 9.2s InterpolantComputationTime, 3963 NumberOfCodeBlocks, 3963 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 4790 ConstructedInterpolants, 0 QuantifiedInterpolants, 12068 SizeOfPredicates, 49 NumberOfNonLiveVariables, 3171 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 30 InterpolantComputations, 14 PerfectInterpolantSequences, 1368/4174 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:37:51,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_32ec19d3-9d12-4a8c-a3ca-ccef0e392dbd/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE