./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack_longer-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack_longer-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro --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 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 --- 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-8393723 [2022-11-18 19:33:45,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:33:45,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:33:45,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:33:45,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:33:45,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:33:45,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:33:45,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:33:45,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:33:45,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:33:45,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:33:45,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:33:45,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:33:45,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:33:45,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:33:45,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:33:45,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:33:45,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:33:45,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:33:45,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:33:45,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:33:46,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:33:46,004 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:33:46,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:33:46,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:33:46,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:33:46,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:33:46,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:33:46,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:33:46,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:33:46,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:33:46,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:33:46,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:33:46,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:33:46,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:33:46,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:33:46,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:33:46,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:33:46,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:33:46,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:33:46,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:33:46,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:33:46,097 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:33:46,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:33:46,098 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:33:46,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:33:46,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:33:46,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:33:46,101 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:33:46,101 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:33:46,102 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:33:46,102 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:33:46,104 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:33:46,104 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:33:46,104 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:33:46,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:33:46,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:33:46,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:33:46,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:33:46,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:33:46,107 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:33:46,107 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:33:46,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:33:46,108 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:33:46,108 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:33:46,108 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:33:46,109 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:33:46,109 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:33:46,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:46,110 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:33:46,110 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:33:46,111 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:33:46,111 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:33:46,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:33:46,112 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:33:46,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:33:46,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:33:46,113 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_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 402cb3c5f3290109e83e598d96446a87fac59fa4aaa0b6234366e7da005f5688 [2022-11-18 19:33:46,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:33:46,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:33:46,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:33:46,512 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:33:46,513 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:33:46,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/stack_longer-2.i [2022-11-18 19:33:46,614 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/data/e891c7477/2efcba75728c44f187e1ab28e22c396d/FLAGb73ec0020 [2022-11-18 19:33:47,397 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:33:47,404 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/sv-benchmarks/c/pthread/stack_longer-2.i [2022-11-18 19:33:47,428 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/data/e891c7477/2efcba75728c44f187e1ab28e22c396d/FLAGb73ec0020 [2022-11-18 19:33:47,584 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/data/e891c7477/2efcba75728c44f187e1ab28e22c396d [2022-11-18 19:33:47,588 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:33:47,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:33:47,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:47,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:33:47,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:33:47,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:47" (1/1) ... [2022-11-18 19:33:47,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1965f417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:47, skipping insertion in model container [2022-11-18 19:33:47,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:33:47" (1/1) ... [2022-11-18 19:33:47,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:33:47,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:33:48,400 WARN L234 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_4561d790-5c57-4c32-aabc-064a9b088821/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2022-11-18 19:33:48,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:48,443 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:33:48,513 WARN L234 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_4561d790-5c57-4c32-aabc-064a9b088821/sv-benchmarks/c/pthread/stack_longer-2.i[41529,41542] [2022-11-18 19:33:48,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:33:48,620 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:33:48,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48 WrapperNode [2022-11-18 19:33:48,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:33:48,623 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:48,623 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:33:48,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:33:48,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (1/1) ... [2022-11-18 19:33:48,668 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (1/1) ... [2022-11-18 19:33:48,727 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 156 [2022-11-18 19:33:48,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:33:48,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:33:48,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:33:48,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:33:48,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (1/1) ... [2022-11-18 19:33:48,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (1/1) ... [2022-11-18 19:33:48,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (1/1) ... [2022-11-18 19:33:48,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (1/1) ... [2022-11-18 19:33:48,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (1/1) ... [2022-11-18 19:33:48,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (1/1) ... [2022-11-18 19:33:48,786 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (1/1) ... [2022-11-18 19:33:48,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (1/1) ... [2022-11-18 19:33:48,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:33:48,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:33:48,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:33:48,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:33:48,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (1/1) ... [2022-11-18 19:33:48,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:33:48,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:48,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:33:48,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:33:48,929 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 19:33:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 19:33:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 19:33:48,930 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 19:33:48,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:33:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:33:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:33:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:33:48,931 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:33:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:33:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:33:48,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:33:48,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:33:48,934 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:33:49,118 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:33:49,121 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:33:49,555 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:33:49,565 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:33:49,566 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:33:49,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:49 BoogieIcfgContainer [2022-11-18 19:33:49,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:33:49,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:33:49,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:33:49,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:33:49,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:33:47" (1/3) ... [2022-11-18 19:33:49,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ff2c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:49, skipping insertion in model container [2022-11-18 19:33:49,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:33:48" (2/3) ... [2022-11-18 19:33:49,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ff2c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:33:49, skipping insertion in model container [2022-11-18 19:33:49,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:33:49" (3/3) ... [2022-11-18 19:33:49,580 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longer-2.i [2022-11-18 19:33:49,591 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:33:49,603 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:33:49,603 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 19:33:49,604 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:33:49,787 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:33:49,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 184 transitions, 384 flow [2022-11-18 19:33:50,002 INFO L130 PetriNetUnfolder]: 10/182 cut-off events. [2022-11-18 19:33:50,002 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:33:50,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191 conditions, 182 events. 10/182 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 467 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 140. Up to 3 conditions per place. [2022-11-18 19:33:50,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 184 transitions, 384 flow [2022-11-18 19:33:50,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 172 transitions, 353 flow [2022-11-18 19:33:50,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:33:50,100 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@28ac2f01, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:33:50,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 19:33:50,142 INFO L130 PetriNetUnfolder]: 3/77 cut-off events. [2022-11-18 19:33:50,142 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:33:50,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:50,143 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] [2022-11-18 19:33:50,144 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:50,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:50,152 INFO L85 PathProgramCache]: Analyzing trace with hash 260137772, now seen corresponding path program 1 times [2022-11-18 19:33:50,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:50,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991009928] [2022-11-18 19:33:50,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:50,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:50,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:50,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:50,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:50,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991009928] [2022-11-18 19:33:50,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991009928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:50,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:50,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:50,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224838863] [2022-11-18 19:33:50,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:50,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:50,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:50,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:50,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:50,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:33:50,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 172 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:50,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:50,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:33:50,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:51,176 INFO L130 PetriNetUnfolder]: 26/292 cut-off events. [2022-11-18 19:33:51,177 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 19:33:51,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 292 events. 26/292 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1227 event pairs, 2 based on Foata normal form. 40/302 useless extension candidates. Maximal degree in co-relation 323. Up to 36 conditions per place. [2022-11-18 19:33:51,183 INFO L137 encePairwiseOnDemand]: 172/184 looper letters, 19 selfloop transitions, 4 changer transitions 0/172 dead transitions. [2022-11-18 19:33:51,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 172 transitions, 408 flow [2022-11-18 19:33:51,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:51,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:51,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 852 transitions. [2022-11-18 19:33:51,212 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9260869565217391 [2022-11-18 19:33:51,213 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 852 transitions. [2022-11-18 19:33:51,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 852 transitions. [2022-11-18 19:33:51,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:51,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 852 transitions. [2022-11-18 19:33:51,225 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) [2022-11-18 19:33:51,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,237 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,240 INFO L175 Difference]: Start difference. First operand has 169 places, 172 transitions, 353 flow. Second operand 5 states and 852 transitions. [2022-11-18 19:33:51,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 172 transitions, 408 flow [2022-11-18 19:33:51,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 172 transitions, 397 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:33:51,250 INFO L231 Difference]: Finished difference. Result has 169 places, 166 transitions, 362 flow [2022-11-18 19:33:51,253 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=362, PETRI_PLACES=169, PETRI_TRANSITIONS=166} [2022-11-18 19:33:51,257 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 0 predicate places. [2022-11-18 19:33:51,257 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 166 transitions, 362 flow [2022-11-18 19:33:51,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.75) internal successors, (655), 4 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:51,259 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] [2022-11-18 19:33:51,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:33:51,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1165315661, now seen corresponding path program 1 times [2022-11-18 19:33:51,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:51,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472761967] [2022-11-18 19:33:51,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:51,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:51,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:51,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472761967] [2022-11-18 19:33:51,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472761967] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:51,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:51,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:51,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997516163] [2022-11-18 19:33:51,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:51,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:33:51,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:51,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:33:51,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:33:51,477 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 184 [2022-11-18 19:33:51,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 166 transitions, 362 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:51,482 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 184 [2022-11-18 19:33:51,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:51,867 INFO L130 PetriNetUnfolder]: 144/1251 cut-off events. [2022-11-18 19:33:51,867 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-11-18 19:33:51,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1599 conditions, 1251 events. 144/1251 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 7565 event pairs, 63 based on Foata normal form. 0/1096 useless extension candidates. Maximal degree in co-relation 1239. Up to 191 conditions per place. [2022-11-18 19:33:51,883 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 20 selfloop transitions, 3 changer transitions 0/173 dead transitions. [2022-11-18 19:33:51,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 173 transitions, 425 flow [2022-11-18 19:33:51,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:33:51,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:33:51,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 505 transitions. [2022-11-18 19:33:51,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9148550724637681 [2022-11-18 19:33:51,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 505 transitions. [2022-11-18 19:33:51,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 505 transitions. [2022-11-18 19:33:51,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:51,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 505 transitions. [2022-11-18 19:33:51,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,890 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,891 INFO L175 Difference]: Start difference. First operand has 169 places, 166 transitions, 362 flow. Second operand 3 states and 505 transitions. [2022-11-18 19:33:51,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 173 transitions, 425 flow [2022-11-18 19:33:51,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 173 transitions, 423 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:51,903 INFO L231 Difference]: Finished difference. Result has 171 places, 167 transitions, 377 flow [2022-11-18 19:33:51,903 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=377, PETRI_PLACES=171, PETRI_TRANSITIONS=167} [2022-11-18 19:33:51,904 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 2 predicate places. [2022-11-18 19:33:51,905 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 167 transitions, 377 flow [2022-11-18 19:33:51,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:51,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:51,907 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] [2022-11-18 19:33:51,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:33:51,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:51,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:51,909 INFO L85 PathProgramCache]: Analyzing trace with hash 257660992, now seen corresponding path program 1 times [2022-11-18 19:33:51,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:51,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000640975] [2022-11-18 19:33:51,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:51,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:52,100 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:33:52,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:52,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000640975] [2022-11-18 19:33:52,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000640975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:52,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:52,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:52,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90528535] [2022-11-18 19:33:52,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:52,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:52,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:52,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:52,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:52,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:33:52,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 167 transitions, 377 flow. Second operand has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:52,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:52,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:33:52,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:52,308 INFO L130 PetriNetUnfolder]: 96/790 cut-off events. [2022-11-18 19:33:52,309 INFO L131 PetriNetUnfolder]: For 119/120 co-relation queries the response was YES. [2022-11-18 19:33:52,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 790 events. 96/790 cut-off events. For 119/120 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3674 event pairs, 12 based on Foata normal form. 7/719 useless extension candidates. Maximal degree in co-relation 1036. Up to 87 conditions per place. [2022-11-18 19:33:52,319 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 12 selfloop transitions, 8 changer transitions 0/170 dead transitions. [2022-11-18 19:33:52,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 170 transitions, 424 flow [2022-11-18 19:33:52,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:52,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2022-11-18 19:33:52,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-18 19:33:52,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2022-11-18 19:33:52,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2022-11-18 19:33:52,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:52,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2022-11-18 19:33:52,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:52,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:52,331 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:52,331 INFO L175 Difference]: Start difference. First operand has 171 places, 167 transitions, 377 flow. Second operand 5 states and 828 transitions. [2022-11-18 19:33:52,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 170 transitions, 424 flow [2022-11-18 19:33:52,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 170 transitions, 421 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:52,341 INFO L231 Difference]: Finished difference. Result has 174 places, 167 transitions, 394 flow [2022-11-18 19:33:52,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=174, PETRI_TRANSITIONS=167} [2022-11-18 19:33:52,344 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 5 predicate places. [2022-11-18 19:33:52,344 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 167 transitions, 394 flow [2022-11-18 19:33:52,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.25) internal successors, (661), 4 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:52,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:52,346 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] [2022-11-18 19:33:52,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:33:52,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:52,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:52,348 INFO L85 PathProgramCache]: Analyzing trace with hash -602443304, now seen corresponding path program 1 times [2022-11-18 19:33:52,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:52,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487065847] [2022-11-18 19:33:52,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:52,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:52,547 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:52,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:52,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487065847] [2022-11-18 19:33:52,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487065847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:52,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175973397] [2022-11-18 19:33:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:52,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:52,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:52,552 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:52,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:33:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:52,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:33:52,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:52,873 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:52,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:52,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175973397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:52,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:52,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:33:52,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900542441] [2022-11-18 19:33:52,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:52,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:52,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:52,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:52,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:52,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:33:52,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 167 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:52,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:52,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:33:52,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:53,124 INFO L130 PetriNetUnfolder]: 91/774 cut-off events. [2022-11-18 19:33:53,124 INFO L131 PetriNetUnfolder]: For 172/173 co-relation queries the response was YES. [2022-11-18 19:33:53,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 774 events. 91/774 cut-off events. For 172/173 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3576 event pairs, 8 based on Foata normal form. 7/708 useless extension candidates. Maximal degree in co-relation 1059. Up to 65 conditions per place. [2022-11-18 19:33:53,133 INFO L137 encePairwiseOnDemand]: 179/184 looper letters, 17 selfloop transitions, 6 changer transitions 0/173 dead transitions. [2022-11-18 19:33:53,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 173 transitions, 455 flow [2022-11-18 19:33:53,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:33:53,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:33:53,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1158 transitions. [2022-11-18 19:33:53,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8990683229813664 [2022-11-18 19:33:53,137 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1158 transitions. [2022-11-18 19:33:53,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1158 transitions. [2022-11-18 19:33:53,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:53,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1158 transitions. [2022-11-18 19:33:53,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 165.42857142857142) internal successors, (1158), 7 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,146 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 184.0) internal successors, (1472), 8 states have internal predecessors, (1472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,146 INFO L175 Difference]: Start difference. First operand has 174 places, 167 transitions, 394 flow. Second operand 7 states and 1158 transitions. [2022-11-18 19:33:53,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 173 transitions, 455 flow [2022-11-18 19:33:53,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 173 transitions, 443 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:33:53,156 INFO L231 Difference]: Finished difference. Result has 176 places, 166 transitions, 390 flow [2022-11-18 19:33:53,157 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=390, PETRI_PLACES=176, PETRI_TRANSITIONS=166} [2022-11-18 19:33:53,158 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 7 predicate places. [2022-11-18 19:33:53,159 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 166 transitions, 390 flow [2022-11-18 19:33:53,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 164.33333333333334) internal successors, (986), 6 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:53,161 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] [2022-11-18 19:33:53,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:53,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-18 19:33:53,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:53,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:53,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1362637581, now seen corresponding path program 1 times [2022-11-18 19:33:53,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:53,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599486601] [2022-11-18 19:33:53,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:53,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:53,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:53,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:53,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599486601] [2022-11-18 19:33:53,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599486601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:53,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:53,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:53,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265412873] [2022-11-18 19:33:53,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:53,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:53,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:53,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:53,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:53,489 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-18 19:33:53,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 166 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:53,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-18 19:33:53,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:53,867 INFO L130 PetriNetUnfolder]: 289/1946 cut-off events. [2022-11-18 19:33:53,867 INFO L131 PetriNetUnfolder]: For 234/245 co-relation queries the response was YES. [2022-11-18 19:33:53,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2865 conditions, 1946 events. 289/1946 cut-off events. For 234/245 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13859 event pairs, 19 based on Foata normal form. 7/1804 useless extension candidates. Maximal degree in co-relation 2428. Up to 389 conditions per place. [2022-11-18 19:33:53,883 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 42 selfloop transitions, 8 changer transitions 0/193 dead transitions. [2022-11-18 19:33:53,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 193 transitions, 557 flow [2022-11-18 19:33:53,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:53,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:53,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 822 transitions. [2022-11-18 19:33:53,887 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8934782608695652 [2022-11-18 19:33:53,887 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 822 transitions. [2022-11-18 19:33:53,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 822 transitions. [2022-11-18 19:33:53,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:53,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 822 transitions. [2022-11-18 19:33:53,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.4) internal successors, (822), 5 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,893 INFO L175 Difference]: Start difference. First operand has 176 places, 166 transitions, 390 flow. Second operand 5 states and 822 transitions. [2022-11-18 19:33:53,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 193 transitions, 557 flow [2022-11-18 19:33:53,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 193 transitions, 546 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:53,898 INFO L231 Difference]: Finished difference. Result has 178 places, 171 transitions, 431 flow [2022-11-18 19:33:53,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=431, PETRI_PLACES=178, PETRI_TRANSITIONS=171} [2022-11-18 19:33:53,900 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 9 predicate places. [2022-11-18 19:33:53,900 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 171 transitions, 431 flow [2022-11-18 19:33:53,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:53,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:53,901 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] [2022-11-18 19:33:53,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:33:53,901 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:53,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:53,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1943695303, now seen corresponding path program 1 times [2022-11-18 19:33:53,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:53,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604859548] [2022-11-18 19:33:53,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:53,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:54,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:54,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604859548] [2022-11-18 19:33:54,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604859548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:54,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:54,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:54,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152298747] [2022-11-18 19:33:54,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:54,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:54,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:54,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:54,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:54,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:33:54,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 171 transitions, 431 flow. Second operand has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:54,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:54,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:33:54,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:54,296 INFO L130 PetriNetUnfolder]: 64/1064 cut-off events. [2022-11-18 19:33:54,296 INFO L131 PetriNetUnfolder]: For 107/112 co-relation queries the response was YES. [2022-11-18 19:33:54,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1459 conditions, 1064 events. 64/1064 cut-off events. For 107/112 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 5256 event pairs, 14 based on Foata normal form. 0/994 useless extension candidates. Maximal degree in co-relation 1146. Up to 56 conditions per place. [2022-11-18 19:33:54,309 INFO L137 encePairwiseOnDemand]: 177/184 looper letters, 19 selfloop transitions, 4 changer transitions 0/180 dead transitions. [2022-11-18 19:33:54,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 180 transitions, 501 flow [2022-11-18 19:33:54,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:54,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:54,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 836 transitions. [2022-11-18 19:33:54,312 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.908695652173913 [2022-11-18 19:33:54,312 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 836 transitions. [2022-11-18 19:33:54,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 836 transitions. [2022-11-18 19:33:54,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:54,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 836 transitions. [2022-11-18 19:33:54,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.2) internal successors, (836), 5 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:54,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:54,318 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:54,318 INFO L175 Difference]: Start difference. First operand has 178 places, 171 transitions, 431 flow. Second operand 5 states and 836 transitions. [2022-11-18 19:33:54,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 180 transitions, 501 flow [2022-11-18 19:33:54,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 180 transitions, 496 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:54,324 INFO L231 Difference]: Finished difference. Result has 184 places, 174 transitions, 458 flow [2022-11-18 19:33:54,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=458, PETRI_PLACES=184, PETRI_TRANSITIONS=174} [2022-11-18 19:33:54,328 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 15 predicate places. [2022-11-18 19:33:54,328 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 174 transitions, 458 flow [2022-11-18 19:33:54,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.5) internal successors, (654), 4 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:54,334 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:54,335 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] [2022-11-18 19:33:54,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:33:54,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:54,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash -845823597, now seen corresponding path program 1 times [2022-11-18 19:33:54,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:54,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172686817] [2022-11-18 19:33:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:54,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:54,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:54,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:54,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172686817] [2022-11-18 19:33:54,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172686817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:54,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:54,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:54,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931648470] [2022-11-18 19:33:54,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:54,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:33:54,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:54,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:33:54,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:33:54,536 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:33:54,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 174 transitions, 458 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:54,537 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:54,537 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:33:54,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:54,722 INFO L130 PetriNetUnfolder]: 38/952 cut-off events. [2022-11-18 19:33:54,723 INFO L131 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-11-18 19:33:54,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1237 conditions, 952 events. 38/952 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 5102 event pairs, 13 based on Foata normal form. 10/919 useless extension candidates. Maximal degree in co-relation 896. Up to 39 conditions per place. [2022-11-18 19:33:54,730 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 12 selfloop transitions, 4 changer transitions 0/173 dead transitions. [2022-11-18 19:33:54,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 173 transitions, 478 flow [2022-11-18 19:33:54,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:33:54,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:33:54,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 504 transitions. [2022-11-18 19:33:54,733 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9130434782608695 [2022-11-18 19:33:54,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 504 transitions. [2022-11-18 19:33:54,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 504 transitions. [2022-11-18 19:33:54,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:54,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 504 transitions. [2022-11-18 19:33:54,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2022-11-18 19:33:54,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:54,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:54,737 INFO L175 Difference]: Start difference. First operand has 184 places, 174 transitions, 458 flow. Second operand 3 states and 504 transitions. [2022-11-18 19:33:54,737 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 173 transitions, 478 flow [2022-11-18 19:33:54,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 173 transitions, 471 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-18 19:33:54,741 INFO L231 Difference]: Finished difference. Result has 184 places, 171 transitions, 440 flow [2022-11-18 19:33:54,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=440, PETRI_PLACES=184, PETRI_TRANSITIONS=171} [2022-11-18 19:33:54,742 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 15 predicate places. [2022-11-18 19:33:54,743 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 171 transitions, 440 flow [2022-11-18 19:33:54,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:54,743 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:54,743 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] [2022-11-18 19:33:54,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:33:54,744 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:54,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:54,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1971349954, now seen corresponding path program 1 times [2022-11-18 19:33:54,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:54,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139540746] [2022-11-18 19:33:54,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:54,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:54,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:54,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139540746] [2022-11-18 19:33:54,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139540746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:54,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:54,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:33:54,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789357840] [2022-11-18 19:33:54,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:54,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:54,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:54,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:54,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:33:54,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:33:54,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 171 transitions, 440 flow. Second operand has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:54,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:54,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:33:54,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:55,302 INFO L130 PetriNetUnfolder]: 130/1333 cut-off events. [2022-11-18 19:33:55,302 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2022-11-18 19:33:55,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 1333 events. 130/1333 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8107 event pairs, 38 based on Foata normal form. 4/1281 useless extension candidates. Maximal degree in co-relation 1189. Up to 123 conditions per place. [2022-11-18 19:33:55,312 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 55 selfloop transitions, 11 changer transitions 0/206 dead transitions. [2022-11-18 19:33:55,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 206 transitions, 667 flow [2022-11-18 19:33:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:33:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:33:55,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1252 transitions. [2022-11-18 19:33:55,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8505434782608695 [2022-11-18 19:33:55,316 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1252 transitions. [2022-11-18 19:33:55,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1252 transitions. [2022-11-18 19:33:55,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:55,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1252 transitions. [2022-11-18 19:33:55,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 156.5) internal successors, (1252), 8 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,327 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,327 INFO L175 Difference]: Start difference. First operand has 184 places, 171 transitions, 440 flow. Second operand 8 states and 1252 transitions. [2022-11-18 19:33:55,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 206 transitions, 667 flow [2022-11-18 19:33:55,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 206 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:33:55,332 INFO L231 Difference]: Finished difference. Result has 193 places, 177 transitions, 502 flow [2022-11-18 19:33:55,332 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=502, PETRI_PLACES=193, PETRI_TRANSITIONS=177} [2022-11-18 19:33:55,335 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 24 predicate places. [2022-11-18 19:33:55,336 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 177 transitions, 502 flow [2022-11-18 19:33:55,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.66666666666666) internal successors, (904), 6 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:55,340 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] [2022-11-18 19:33:55,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:33:55,341 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:55,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:55,341 INFO L85 PathProgramCache]: Analyzing trace with hash 386141973, now seen corresponding path program 1 times [2022-11-18 19:33:55,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:55,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549101066] [2022-11-18 19:33:55,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:55,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:55,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:55,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549101066] [2022-11-18 19:33:55,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549101066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:55,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:55,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:55,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770351298] [2022-11-18 19:33:55,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:55,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:55,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:55,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:55,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:55,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-18 19:33:55,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 177 transitions, 502 flow. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,450 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:55,450 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-18 19:33:55,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:55,727 INFO L130 PetriNetUnfolder]: 102/1277 cut-off events. [2022-11-18 19:33:55,727 INFO L131 PetriNetUnfolder]: For 330/332 co-relation queries the response was YES. [2022-11-18 19:33:55,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 1277 events. 102/1277 cut-off events. For 330/332 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7185 event pairs, 24 based on Foata normal form. 22/1260 useless extension candidates. Maximal degree in co-relation 1563. Up to 114 conditions per place. [2022-11-18 19:33:55,736 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 28 selfloop transitions, 8 changer transitions 0/181 dead transitions. [2022-11-18 19:33:55,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 181 transitions, 582 flow [2022-11-18 19:33:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:55,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:55,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 803 transitions. [2022-11-18 19:33:55,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8728260869565218 [2022-11-18 19:33:55,740 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 803 transitions. [2022-11-18 19:33:55,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 803 transitions. [2022-11-18 19:33:55,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:55,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 803 transitions. [2022-11-18 19:33:55,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,745 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,745 INFO L175 Difference]: Start difference. First operand has 193 places, 177 transitions, 502 flow. Second operand 5 states and 803 transitions. [2022-11-18 19:33:55,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 181 transitions, 582 flow [2022-11-18 19:33:55,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 181 transitions, 576 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:33:55,750 INFO L231 Difference]: Finished difference. Result has 192 places, 174 transitions, 517 flow [2022-11-18 19:33:55,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=517, PETRI_PLACES=192, PETRI_TRANSITIONS=174} [2022-11-18 19:33:55,752 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 23 predicate places. [2022-11-18 19:33:55,752 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 174 transitions, 517 flow [2022-11-18 19:33:55,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:55,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:55,753 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] [2022-11-18 19:33:55,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:33:55,753 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:55,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:55,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1481931682, now seen corresponding path program 1 times [2022-11-18 19:33:55,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:55,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596300888] [2022-11-18 19:33:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:55,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:55,921 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:55,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:55,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596300888] [2022-11-18 19:33:55,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596300888] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:55,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594191713] [2022-11-18 19:33:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:55,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:55,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:55,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:55,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:33:56,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:56,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:33:56,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:56,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:33:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:56,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594191713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:33:56,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:33:56,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:33:56,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466561622] [2022-11-18 19:33:56,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:33:56,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:33:56,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:56,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:33:56,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:33:56,488 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-18 19:33:56,496 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 174 transitions, 517 flow. Second operand has 12 states, 12 states have (on average 157.25) internal successors, (1887), 12 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:56,497 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:56,497 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-18 19:33:56,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:57,227 INFO L130 PetriNetUnfolder]: 160/2260 cut-off events. [2022-11-18 19:33:57,227 INFO L131 PetriNetUnfolder]: For 716/716 co-relation queries the response was YES. [2022-11-18 19:33:57,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3629 conditions, 2260 events. 160/2260 cut-off events. For 716/716 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 14808 event pairs, 32 based on Foata normal form. 25/2222 useless extension candidates. Maximal degree in co-relation 2895. Up to 107 conditions per place. [2022-11-18 19:33:57,243 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 78 selfloop transitions, 34 changer transitions 0/256 dead transitions. [2022-11-18 19:33:57,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 256 transitions, 1079 flow [2022-11-18 19:33:57,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:33:57,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-18 19:33:57,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3189 transitions. [2022-11-18 19:33:57,250 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8665760869565218 [2022-11-18 19:33:57,251 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3189 transitions. [2022-11-18 19:33:57,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3189 transitions. [2022-11-18 19:33:57,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:57,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3189 transitions. [2022-11-18 19:33:57,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 159.45) internal successors, (3189), 20 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:57,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 184.0) internal successors, (3864), 21 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:57,270 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 184.0) internal successors, (3864), 21 states have internal predecessors, (3864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:57,270 INFO L175 Difference]: Start difference. First operand has 192 places, 174 transitions, 517 flow. Second operand 20 states and 3189 transitions. [2022-11-18 19:33:57,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 256 transitions, 1079 flow [2022-11-18 19:33:57,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 256 transitions, 1057 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 19:33:57,279 INFO L231 Difference]: Finished difference. Result has 216 places, 201 transitions, 780 flow [2022-11-18 19:33:57,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=505, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=780, PETRI_PLACES=216, PETRI_TRANSITIONS=201} [2022-11-18 19:33:57,281 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 47 predicate places. [2022-11-18 19:33:57,282 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 201 transitions, 780 flow [2022-11-18 19:33:57,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 157.25) internal successors, (1887), 12 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:57,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:57,283 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] [2022-11-18 19:33:57,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:57,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:57,489 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:57,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:57,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1304758624, now seen corresponding path program 1 times [2022-11-18 19:33:57,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:57,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541624174] [2022-11-18 19:33:57,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:57,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:57,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:57,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541624174] [2022-11-18 19:33:57,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541624174] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:57,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655891104] [2022-11-18 19:33:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:57,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:57,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:57,674 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:57,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:33:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:57,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:33:57,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:33:57,993 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:57,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:33:57,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655891104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:57,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:33:57,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:33:57,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744323734] [2022-11-18 19:33:57,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:57,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:33:57,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:57,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:33:57,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:33:57,997 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-18 19:33:57,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 201 transitions, 780 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) [2022-11-18 19:33:57,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:57,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-18 19:33:57,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:58,691 INFO L130 PetriNetUnfolder]: 154/2404 cut-off events. [2022-11-18 19:33:58,692 INFO L131 PetriNetUnfolder]: For 1498/1498 co-relation queries the response was YES. [2022-11-18 19:33:58,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 2404 events. 154/2404 cut-off events. For 1498/1498 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 15209 event pairs, 31 based on Foata normal form. 36/2370 useless extension candidates. Maximal degree in co-relation 3524. Up to 231 conditions per place. [2022-11-18 19:33:58,711 INFO L137 encePairwiseOnDemand]: 174/184 looper letters, 68 selfloop transitions, 20 changer transitions 0/232 dead transitions. [2022-11-18 19:33:58,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 232 transitions, 1142 flow [2022-11-18 19:33:58,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:33:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:33:58,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1280 transitions. [2022-11-18 19:33:58,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8695652173913043 [2022-11-18 19:33:58,717 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1280 transitions. [2022-11-18 19:33:58,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1280 transitions. [2022-11-18 19:33:58,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:58,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1280 transitions. [2022-11-18 19:33:58,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:58,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:58,726 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:58,727 INFO L175 Difference]: Start difference. First operand has 216 places, 201 transitions, 780 flow. Second operand 8 states and 1280 transitions. [2022-11-18 19:33:58,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 232 transitions, 1142 flow [2022-11-18 19:33:58,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 232 transitions, 1050 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-18 19:33:58,739 INFO L231 Difference]: Finished difference. Result has 221 places, 212 transitions, 911 flow [2022-11-18 19:33:58,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=708, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=221, PETRI_TRANSITIONS=212} [2022-11-18 19:33:58,740 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 52 predicate places. [2022-11-18 19:33:58,740 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 212 transitions, 911 flow [2022-11-18 19:33:58,741 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) [2022-11-18 19:33:58,741 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:58,741 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] [2022-11-18 19:33:58,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:33:58,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:58,949 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:58,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1324777134, now seen corresponding path program 1 times [2022-11-18 19:33:58,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:58,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792961298] [2022-11-18 19:33:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:58,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,080 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:33:59,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:59,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792961298] [2022-11-18 19:33:59,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792961298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:33:59,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:33:59,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:33:59,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559365948] [2022-11-18 19:33:59,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:33:59,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:33:59,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:33:59,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:33:59,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:33:59,083 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:33:59,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 212 transitions, 911 flow. Second operand has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:59,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:33:59,084 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:33:59,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:33:59,609 INFO L130 PetriNetUnfolder]: 91/2069 cut-off events. [2022-11-18 19:33:59,610 INFO L131 PetriNetUnfolder]: For 983/983 co-relation queries the response was YES. [2022-11-18 19:33:59,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 2069 events. 91/2069 cut-off events. For 983/983 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 11459 event pairs, 11 based on Foata normal form. 19/2025 useless extension candidates. Maximal degree in co-relation 2863. Up to 107 conditions per place. [2022-11-18 19:33:59,629 INFO L137 encePairwiseOnDemand]: 178/184 looper letters, 12 selfloop transitions, 8 changer transitions 0/215 dead transitions. [2022-11-18 19:33:59,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 215 transitions, 961 flow [2022-11-18 19:33:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:33:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:33:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 828 transitions. [2022-11-18 19:33:59,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-18 19:33:59,632 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 828 transitions. [2022-11-18 19:33:59,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 828 transitions. [2022-11-18 19:33:59,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:33:59,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 828 transitions. [2022-11-18 19:33:59,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.6) internal successors, (828), 5 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:59,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:59,654 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:59,654 INFO L175 Difference]: Start difference. First operand has 221 places, 212 transitions, 911 flow. Second operand 5 states and 828 transitions. [2022-11-18 19:33:59,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 215 transitions, 961 flow [2022-11-18 19:33:59,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 215 transitions, 941 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-18 19:33:59,665 INFO L231 Difference]: Finished difference. Result has 222 places, 212 transitions, 911 flow [2022-11-18 19:33:59,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=887, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=911, PETRI_PLACES=222, PETRI_TRANSITIONS=212} [2022-11-18 19:33:59,666 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 53 predicate places. [2022-11-18 19:33:59,667 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 212 transitions, 911 flow [2022-11-18 19:33:59,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:33:59,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:33:59,667 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-18 19:33:59,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:33:59,668 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:33:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:33:59,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1881581303, now seen corresponding path program 1 times [2022-11-18 19:33:59,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:33:59,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669043870] [2022-11-18 19:33:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:59,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:33:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:33:59,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:33:59,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669043870] [2022-11-18 19:33:59,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669043870] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:33:59,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288432028] [2022-11-18 19:33:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:33:59,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:33:59,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:33:59,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:33:59,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:33:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:33:59,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:34:00,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:00,124 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:00,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:34:00,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288432028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:00,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:34:00,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 19:34:00,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322908672] [2022-11-18 19:34:00,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:00,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:34:00,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:00,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:34:00,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:34:00,129 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 184 [2022-11-18 19:34:00,130 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 212 transitions, 911 flow. Second operand has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:00,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:00,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 184 [2022-11-18 19:34:00,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:00,645 INFO L130 PetriNetUnfolder]: 88/2075 cut-off events. [2022-11-18 19:34:00,645 INFO L131 PetriNetUnfolder]: For 961/961 co-relation queries the response was YES. [2022-11-18 19:34:00,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 2075 events. 88/2075 cut-off events. For 961/961 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11413 event pairs, 17 based on Foata normal form. 19/2031 useless extension candidates. Maximal degree in co-relation 2961. Up to 112 conditions per place. [2022-11-18 19:34:00,678 INFO L137 encePairwiseOnDemand]: 180/184 looper letters, 13 selfloop transitions, 5 changer transitions 3/213 dead transitions. [2022-11-18 19:34:00,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 213 transitions, 951 flow [2022-11-18 19:34:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:34:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:34:00,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 663 transitions. [2022-11-18 19:34:00,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9008152173913043 [2022-11-18 19:34:00,681 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 663 transitions. [2022-11-18 19:34:00,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 663 transitions. [2022-11-18 19:34:00,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:00,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 663 transitions. [2022-11-18 19:34:00,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 165.75) internal successors, (663), 4 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:00,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:00,685 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 184.0) internal successors, (920), 5 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:00,685 INFO L175 Difference]: Start difference. First operand has 222 places, 212 transitions, 911 flow. Second operand 4 states and 663 transitions. [2022-11-18 19:34:00,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 213 transitions, 951 flow [2022-11-18 19:34:00,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 213 transitions, 939 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:34:00,734 INFO L231 Difference]: Finished difference. Result has 221 places, 208 transitions, 899 flow [2022-11-18 19:34:00,734 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=895, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=899, PETRI_PLACES=221, PETRI_TRANSITIONS=208} [2022-11-18 19:34:00,735 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 52 predicate places. [2022-11-18 19:34:00,735 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 208 transitions, 899 flow [2022-11-18 19:34:00,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 164.6) internal successors, (823), 5 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:00,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:00,736 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] [2022-11-18 19:34:00,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:00,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:34:00,936 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:34:00,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:00,937 INFO L85 PathProgramCache]: Analyzing trace with hash 589813427, now seen corresponding path program 1 times [2022-11-18 19:34:00,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:00,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206309357] [2022-11-18 19:34:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:00,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:01,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:01,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206309357] [2022-11-18 19:34:01,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206309357] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:01,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442500462] [2022-11-18 19:34:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:01,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:01,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:01,176 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:01,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:34:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:01,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:34:01,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:01,554 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:01,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:01,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442500462] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:01,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:01,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 19:34:01,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715483056] [2022-11-18 19:34:01,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:01,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:34:01,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:01,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:34:01,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:34:01,853 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:34:01,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 208 transitions, 899 flow. Second operand has 16 states, 16 states have (on average 151.625) internal successors, (2426), 16 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:01,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:01,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:34:01,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:03,064 INFO L130 PetriNetUnfolder]: 219/2729 cut-off events. [2022-11-18 19:34:03,065 INFO L131 PetriNetUnfolder]: For 1905/1905 co-relation queries the response was YES. [2022-11-18 19:34:03,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4786 conditions, 2729 events. 219/2729 cut-off events. For 1905/1905 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 19002 event pairs, 55 based on Foata normal form. 37/2695 useless extension candidates. Maximal degree in co-relation 4306. Up to 126 conditions per place. [2022-11-18 19:34:03,093 INFO L137 encePairwiseOnDemand]: 171/184 looper letters, 90 selfloop transitions, 62 changer transitions 1/287 dead transitions. [2022-11-18 19:34:03,093 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 287 transitions, 1522 flow [2022-11-18 19:34:03,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:34:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 19:34:03,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3674 transitions. [2022-11-18 19:34:03,103 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8319746376811594 [2022-11-18 19:34:03,103 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3674 transitions. [2022-11-18 19:34:03,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3674 transitions. [2022-11-18 19:34:03,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:03,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3674 transitions. [2022-11-18 19:34:03,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 153.08333333333334) internal successors, (3674), 24 states have internal predecessors, (3674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:03,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 184.0) internal successors, (4600), 25 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:03,127 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 184.0) internal successors, (4600), 25 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:03,128 INFO L175 Difference]: Start difference. First operand has 221 places, 208 transitions, 899 flow. Second operand 24 states and 3674 transitions. [2022-11-18 19:34:03,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 287 transitions, 1522 flow [2022-11-18 19:34:03,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 287 transitions, 1512 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:34:03,143 INFO L231 Difference]: Finished difference. Result has 241 places, 223 transitions, 1148 flow [2022-11-18 19:34:03,143 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=857, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1148, PETRI_PLACES=241, PETRI_TRANSITIONS=223} [2022-11-18 19:34:03,144 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 72 predicate places. [2022-11-18 19:34:03,145 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 223 transitions, 1148 flow [2022-11-18 19:34:03,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 151.625) internal successors, (2426), 16 states have internal predecessors, (2426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:03,146 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:03,146 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] [2022-11-18 19:34:03,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:03,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:34:03,352 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:34:03,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:03,352 INFO L85 PathProgramCache]: Analyzing trace with hash 114781450, now seen corresponding path program 1 times [2022-11-18 19:34:03,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:03,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024566860] [2022-11-18 19:34:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:03,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:03,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:03,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024566860] [2022-11-18 19:34:03,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024566860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:34:03,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:34:03,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:34:03,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292654768] [2022-11-18 19:34:03,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:34:03,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:34:03,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:34:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:34:03,529 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:34:03,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 223 transitions, 1148 flow. Second operand has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:03,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:03,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:34:03,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:04,381 INFO L130 PetriNetUnfolder]: 216/2847 cut-off events. [2022-11-18 19:34:04,381 INFO L131 PetriNetUnfolder]: For 2468/2468 co-relation queries the response was YES. [2022-11-18 19:34:04,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5127 conditions, 2847 events. 216/2847 cut-off events. For 2468/2468 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 20310 event pairs, 45 based on Foata normal form. 24/2800 useless extension candidates. Maximal degree in co-relation 4665. Up to 297 conditions per place. [2022-11-18 19:34:04,402 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 49 selfloop transitions, 45 changer transitions 2/230 dead transitions. [2022-11-18 19:34:04,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 230 transitions, 1334 flow [2022-11-18 19:34:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:34:04,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:34:04,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1227 transitions. [2022-11-18 19:34:04,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8335597826086957 [2022-11-18 19:34:04,405 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1227 transitions. [2022-11-18 19:34:04,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1227 transitions. [2022-11-18 19:34:04,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:04,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1227 transitions. [2022-11-18 19:34:04,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 153.375) internal successors, (1227), 8 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:04,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:04,413 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 184.0) internal successors, (1656), 9 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:04,413 INFO L175 Difference]: Start difference. First operand has 241 places, 223 transitions, 1148 flow. Second operand 8 states and 1227 transitions. [2022-11-18 19:34:04,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 230 transitions, 1334 flow [2022-11-18 19:34:04,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 230 transitions, 1281 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-18 19:34:04,428 INFO L231 Difference]: Finished difference. Result has 237 places, 216 transitions, 1165 flow [2022-11-18 19:34:04,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1165, PETRI_PLACES=237, PETRI_TRANSITIONS=216} [2022-11-18 19:34:04,430 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 68 predicate places. [2022-11-18 19:34:04,430 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 216 transitions, 1165 flow [2022-11-18 19:34:04,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 152.33333333333334) internal successors, (914), 6 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:04,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:04,431 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] [2022-11-18 19:34:04,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:34:04,431 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:34:04,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:04,432 INFO L85 PathProgramCache]: Analyzing trace with hash 931848476, now seen corresponding path program 1 times [2022-11-18 19:34:04,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:04,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423523642] [2022-11-18 19:34:04,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:04,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:04,941 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 213 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:34:04,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:04,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423523642] [2022-11-18 19:34:04,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423523642] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:04,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145611976] [2022-11-18 19:34:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:04,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:04,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:04,944 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:04,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:34:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:05,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:34:05,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:05,468 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 19:34:05,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 19:34:05,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145611976] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:05,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:05,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-18 19:34:05,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192645704] [2022-11-18 19:34:05,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:05,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:34:05,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:05,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:34:05,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:34:05,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:34:05,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 216 transitions, 1165 flow. Second operand has 18 states, 18 states have (on average 152.22222222222223) internal successors, (2740), 18 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:05,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:05,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:34:05,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:07,640 INFO L130 PetriNetUnfolder]: 342/4677 cut-off events. [2022-11-18 19:34:07,640 INFO L131 PetriNetUnfolder]: For 4989/4989 co-relation queries the response was YES. [2022-11-18 19:34:07,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8607 conditions, 4677 events. 342/4677 cut-off events. For 4989/4989 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 36395 event pairs, 82 based on Foata normal form. 24/4580 useless extension candidates. Maximal degree in co-relation 8128. Up to 202 conditions per place. [2022-11-18 19:34:07,675 INFO L137 encePairwiseOnDemand]: 172/184 looper letters, 139 selfloop transitions, 91 changer transitions 5/369 dead transitions. [2022-11-18 19:34:07,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 369 transitions, 2643 flow [2022-11-18 19:34:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 19:34:07,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-18 19:34:07,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4303 transitions. [2022-11-18 19:34:07,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8352096273291926 [2022-11-18 19:34:07,682 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4303 transitions. [2022-11-18 19:34:07,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4303 transitions. [2022-11-18 19:34:07,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:07,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4303 transitions. [2022-11-18 19:34:07,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 153.67857142857142) internal successors, (4303), 28 states have internal predecessors, (4303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:07,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 184.0) internal successors, (5336), 29 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:07,780 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 184.0) internal successors, (5336), 29 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:07,781 INFO L175 Difference]: Start difference. First operand has 237 places, 216 transitions, 1165 flow. Second operand 28 states and 4303 transitions. [2022-11-18 19:34:07,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 369 transitions, 2643 flow [2022-11-18 19:34:07,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 369 transitions, 2547 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-18 19:34:07,810 INFO L231 Difference]: Finished difference. Result has 270 places, 267 transitions, 1995 flow [2022-11-18 19:34:07,810 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1995, PETRI_PLACES=270, PETRI_TRANSITIONS=267} [2022-11-18 19:34:07,811 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 101 predicate places. [2022-11-18 19:34:07,811 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 267 transitions, 1995 flow [2022-11-18 19:34:07,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 152.22222222222223) internal successors, (2740), 18 states have internal predecessors, (2740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:07,812 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:07,813 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] [2022-11-18 19:34:07,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:08,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:34:08,019 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:34:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:08,020 INFO L85 PathProgramCache]: Analyzing trace with hash -10344524, now seen corresponding path program 1 times [2022-11-18 19:34:08,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:08,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870757609] [2022-11-18 19:34:08,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:08,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 19:34:08,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:08,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870757609] [2022-11-18 19:34:08,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870757609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:08,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365689860] [2022-11-18 19:34:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:08,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:08,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:08,907 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:08,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:34:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:09,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:34:09,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:09,660 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 19:34:09,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 0 proven. 349 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-18 19:34:10,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365689860] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:10,359 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:10,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-18 19:34:10,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476509593] [2022-11-18 19:34:10,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:10,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:34:10,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:10,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:34:10,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:34:10,365 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:34:10,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 267 transitions, 1995 flow. Second operand has 22 states, 22 states have (on average 152.63636363636363) internal successors, (3358), 22 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:10,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:10,368 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:34:10,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:12,834 INFO L130 PetriNetUnfolder]: 479/6351 cut-off events. [2022-11-18 19:34:12,834 INFO L131 PetriNetUnfolder]: For 10534/10534 co-relation queries the response was YES. [2022-11-18 19:34:12,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12271 conditions, 6351 events. 479/6351 cut-off events. For 10534/10534 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 52182 event pairs, 128 based on Foata normal form. 29/6207 useless extension candidates. Maximal degree in co-relation 11563. Up to 316 conditions per place. [2022-11-18 19:34:12,890 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 159 selfloop transitions, 178 changer transitions 2/473 dead transitions. [2022-11-18 19:34:12,890 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 473 transitions, 4288 flow [2022-11-18 19:34:12,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 19:34:12,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 19:34:12,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5366 transitions. [2022-11-18 19:34:12,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8332298136645963 [2022-11-18 19:34:12,897 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5366 transitions. [2022-11-18 19:34:12,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5366 transitions. [2022-11-18 19:34:12,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:12,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5366 transitions. [2022-11-18 19:34:12,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 153.31428571428572) internal successors, (5366), 35 states have internal predecessors, (5366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:12,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 184.0) internal successors, (6624), 36 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:12,918 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 184.0) internal successors, (6624), 36 states have internal predecessors, (6624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:12,918 INFO L175 Difference]: Start difference. First operand has 270 places, 267 transitions, 1995 flow. Second operand 35 states and 5366 transitions. [2022-11-18 19:34:12,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 473 transitions, 4288 flow [2022-11-18 19:34:12,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 473 transitions, 4183 flow, removed 38 selfloop flow, removed 4 redundant places. [2022-11-18 19:34:12,973 INFO L231 Difference]: Finished difference. Result has 307 places, 349 transitions, 3447 flow [2022-11-18 19:34:12,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=1922, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3447, PETRI_PLACES=307, PETRI_TRANSITIONS=349} [2022-11-18 19:34:12,974 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 138 predicate places. [2022-11-18 19:34:12,974 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 349 transitions, 3447 flow [2022-11-18 19:34:12,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 152.63636363636363) internal successors, (3358), 22 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:12,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:12,976 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] [2022-11-18 19:34:12,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 19:34:13,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:34:13,183 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:34:13,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:13,183 INFO L85 PathProgramCache]: Analyzing trace with hash 621930677, now seen corresponding path program 2 times [2022-11-18 19:34:13,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:13,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415387610] [2022-11-18 19:34:13,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:13,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:14,199 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:14,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:14,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415387610] [2022-11-18 19:34:14,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415387610] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:14,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365226515] [2022-11-18 19:34:14,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:34:14,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:14,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:14,202 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:14,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:34:14,436 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:34:14,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:14,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:34:14,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:14,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:15,730 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:34:15,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365226515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:15,730 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:15,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 19:34:15,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564364710] [2022-11-18 19:34:15,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:15,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:34:15,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:15,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:34:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:34:15,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 184 [2022-11-18 19:34:15,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 349 transitions, 3447 flow. Second operand has 32 states, 32 states have (on average 157.71875) internal successors, (5047), 32 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:15,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:15,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 184 [2022-11-18 19:34:15,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:20,160 INFO L130 PetriNetUnfolder]: 564/9353 cut-off events. [2022-11-18 19:34:20,160 INFO L131 PetriNetUnfolder]: For 19347/19347 co-relation queries the response was YES. [2022-11-18 19:34:20,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18474 conditions, 9353 events. 564/9353 cut-off events. For 19347/19347 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 69743 event pairs, 180 based on Foata normal form. 55/9141 useless extension candidates. Maximal degree in co-relation 16781. Up to 622 conditions per place. [2022-11-18 19:34:20,269 INFO L137 encePairwiseOnDemand]: 175/184 looper letters, 295 selfloop transitions, 151 changer transitions 1/594 dead transitions. [2022-11-18 19:34:20,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 594 transitions, 6287 flow [2022-11-18 19:34:20,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 19:34:20,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2022-11-18 19:34:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 7505 transitions. [2022-11-18 19:34:20,373 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8678307123034228 [2022-11-18 19:34:20,373 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 7505 transitions. [2022-11-18 19:34:20,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 7505 transitions. [2022-11-18 19:34:20,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:20,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 7505 transitions. [2022-11-18 19:34:20,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 159.68085106382978) internal successors, (7505), 47 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:20,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 184.0) internal successors, (8832), 48 states have internal predecessors, (8832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:20,403 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 184.0) internal successors, (8832), 48 states have internal predecessors, (8832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:20,404 INFO L175 Difference]: Start difference. First operand has 307 places, 349 transitions, 3447 flow. Second operand 47 states and 7505 transitions. [2022-11-18 19:34:20,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 594 transitions, 6287 flow [2022-11-18 19:34:20,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 594 transitions, 6099 flow, removed 53 selfloop flow, removed 13 redundant places. [2022-11-18 19:34:20,504 INFO L231 Difference]: Finished difference. Result has 349 places, 414 transitions, 4748 flow [2022-11-18 19:34:20,505 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=3276, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=4748, PETRI_PLACES=349, PETRI_TRANSITIONS=414} [2022-11-18 19:34:20,506 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 180 predicate places. [2022-11-18 19:34:20,506 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 414 transitions, 4748 flow [2022-11-18 19:34:20,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 157.71875) internal successors, (5047), 32 states have internal predecessors, (5047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:20,508 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:20,508 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:34:20,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:34:20,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:34:20,716 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:34:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:20,717 INFO L85 PathProgramCache]: Analyzing trace with hash 632562542, now seen corresponding path program 2 times [2022-11-18 19:34:20,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:20,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960134397] [2022-11-18 19:34:20,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:20,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:20,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:21,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1167 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 19:34:21,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:21,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960134397] [2022-11-18 19:34:21,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960134397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:21,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329921814] [2022-11-18 19:34:21,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:34:21,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:21,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:21,815 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:21,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:34:22,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:34:22,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:22,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 819 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:34:22,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1135 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:34:22,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:23,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1135 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 19:34:23,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329921814] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:23,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:23,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 33 [2022-11-18 19:34:23,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047696772] [2022-11-18 19:34:23,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:23,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-18 19:34:23,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:23,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-18 19:34:23,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=846, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 19:34:23,676 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:34:23,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 414 transitions, 4748 flow. Second operand has 34 states, 34 states have (on average 152.11764705882354) internal successors, (5172), 34 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:23,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:23,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:34:23,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:29,568 INFO L130 PetriNetUnfolder]: 918/12257 cut-off events. [2022-11-18 19:34:29,568 INFO L131 PetriNetUnfolder]: For 28502/28502 co-relation queries the response was YES. [2022-11-18 19:34:29,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25003 conditions, 12257 events. 918/12257 cut-off events. For 28502/28502 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 105530 event pairs, 301 based on Foata normal form. 24/11968 useless extension candidates. Maximal degree in co-relation 24099. Up to 600 conditions per place. [2022-11-18 19:34:29,682 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 322 selfloop transitions, 289 changer transitions 9/754 dead transitions. [2022-11-18 19:34:29,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 404 places, 754 transitions, 8703 flow [2022-11-18 19:34:29,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-11-18 19:34:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-11-18 19:34:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 8613 transitions. [2022-11-18 19:34:29,693 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8358889751552795 [2022-11-18 19:34:29,693 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 8613 transitions. [2022-11-18 19:34:29,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 8613 transitions. [2022-11-18 19:34:29,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:29,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 8613 transitions. [2022-11-18 19:34:29,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 153.80357142857142) internal successors, (8613), 56 states have internal predecessors, (8613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:29,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 184.0) internal successors, (10488), 57 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:29,725 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 184.0) internal successors, (10488), 57 states have internal predecessors, (10488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:29,725 INFO L175 Difference]: Start difference. First operand has 349 places, 414 transitions, 4748 flow. Second operand 56 states and 8613 transitions. [2022-11-18 19:34:29,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 404 places, 754 transitions, 8703 flow [2022-11-18 19:34:29,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 754 transitions, 8570 flow, removed 16 selfloop flow, removed 12 redundant places. [2022-11-18 19:34:29,899 INFO L231 Difference]: Finished difference. Result has 408 places, 505 transitions, 6957 flow [2022-11-18 19:34:29,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=4611, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=6957, PETRI_PLACES=408, PETRI_TRANSITIONS=505} [2022-11-18 19:34:29,902 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 239 predicate places. [2022-11-18 19:34:29,902 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 505 transitions, 6957 flow [2022-11-18 19:34:29,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 152.11764705882354) internal successors, (5172), 34 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:29,904 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:29,904 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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] [2022-11-18 19:34:29,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-18 19:34:30,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:30,110 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:34:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:30,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1433984631, now seen corresponding path program 2 times [2022-11-18 19:34:30,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:30,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71330332] [2022-11-18 19:34:30,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:30,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:31,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:34:31,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:31,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71330332] [2022-11-18 19:34:31,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71330332] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:31,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920507858] [2022-11-18 19:34:31,382 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:34:31,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:31,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:31,384 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:31,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:34:31,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:34:31,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:31,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-18 19:34:31,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:34:32,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:33,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1210 backedges. 0 proven. 1118 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:34:33,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920507858] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:33,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:33,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 19:34:33,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575756749] [2022-11-18 19:34:33,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:33,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 19:34:33,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:33,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 19:34:33,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=769, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:34:33,341 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:34:33,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 505 transitions, 6957 flow. Second operand has 32 states, 32 states have (on average 152.4375) internal successors, (4878), 32 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:33,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:33,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:34:33,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:34:44,002 INFO L130 PetriNetUnfolder]: 1582/20010 cut-off events. [2022-11-18 19:34:44,002 INFO L131 PetriNetUnfolder]: For 59777/59777 co-relation queries the response was YES. [2022-11-18 19:34:44,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43108 conditions, 20010 events. 1582/20010 cut-off events. For 59777/59777 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 194002 event pairs, 493 based on Foata normal form. 27/19550 useless extension candidates. Maximal degree in co-relation 42135. Up to 1103 conditions per place. [2022-11-18 19:34:44,293 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 355 selfloop transitions, 592 changer transitions 7/1088 dead transitions. [2022-11-18 19:34:44,293 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1088 transitions, 16485 flow [2022-11-18 19:34:44,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 19:34:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-18 19:34:44,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 7840 transitions. [2022-11-18 19:34:44,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.835464620630861 [2022-11-18 19:34:44,305 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 7840 transitions. [2022-11-18 19:34:44,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 7840 transitions. [2022-11-18 19:34:44,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:34:44,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 7840 transitions. [2022-11-18 19:34:44,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 153.72549019607843) internal successors, (7840), 51 states have internal predecessors, (7840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:44,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 184.0) internal successors, (9568), 52 states have internal predecessors, (9568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:44,342 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 184.0) internal successors, (9568), 52 states have internal predecessors, (9568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:44,342 INFO L175 Difference]: Start difference. First operand has 408 places, 505 transitions, 6957 flow. Second operand 51 states and 7840 transitions. [2022-11-18 19:34:44,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1088 transitions, 16485 flow [2022-11-18 19:34:44,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 1088 transitions, 16289 flow, removed 50 selfloop flow, removed 15 redundant places. [2022-11-18 19:34:44,840 INFO L231 Difference]: Finished difference. Result has 458 places, 844 transitions, 14487 flow [2022-11-18 19:34:44,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=6798, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=14487, PETRI_PLACES=458, PETRI_TRANSITIONS=844} [2022-11-18 19:34:44,841 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 289 predicate places. [2022-11-18 19:34:44,841 INFO L495 AbstractCegarLoop]: Abstraction has has 458 places, 844 transitions, 14487 flow [2022-11-18 19:34:44,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 152.4375) internal successors, (4878), 32 states have internal predecessors, (4878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:44,843 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:34:44,843 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2022-11-18 19:34:44,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-18 19:34:45,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-11-18 19:34:45,044 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:34:45,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:34:45,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1510094802, now seen corresponding path program 3 times [2022-11-18 19:34:45,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:34:45,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974568402] [2022-11-18 19:34:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:34:45,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:34:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:34:47,367 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:34:47,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:34:47,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974568402] [2022-11-18 19:34:47,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974568402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:34:47,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522438259] [2022-11-18 19:34:47,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 19:34:47,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:34:47,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:34:47,384 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:34:47,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:34:48,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-11-18 19:34:48,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:34:48,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:34:48,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:34:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:34:49,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:34:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:34:51,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522438259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:34:51,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:34:51,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2022-11-18 19:34:51,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929301088] [2022-11-18 19:34:51,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:34:51,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 19:34:51,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:34:51,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:34:51,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:34:51,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:34:51,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 844 transitions, 14487 flow. Second operand has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:34:51,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:34:51,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:34:51,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:35:11,772 INFO L130 PetriNetUnfolder]: 2611/32231 cut-off events. [2022-11-18 19:35:11,772 INFO L131 PetriNetUnfolder]: For 129517/129517 co-relation queries the response was YES. [2022-11-18 19:35:12,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73065 conditions, 32231 events. 2611/32231 cut-off events. For 129517/129517 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 350000 event pairs, 867 based on Foata normal form. 109/31565 useless extension candidates. Maximal degree in co-relation 71179. Up to 1909 conditions per place. [2022-11-18 19:35:12,326 INFO L137 encePairwiseOnDemand]: 173/184 looper letters, 479 selfloop transitions, 1126 changer transitions 12/1751 dead transitions. [2022-11-18 19:35:12,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1751 transitions, 31287 flow [2022-11-18 19:35:12,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-11-18 19:35:12,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-11-18 19:35:12,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 11377 transitions. [2022-11-18 19:35:12,338 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8355611045828437 [2022-11-18 19:35:12,338 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 11377 transitions. [2022-11-18 19:35:12,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 11377 transitions. [2022-11-18 19:35:12,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:35:12,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 11377 transitions. [2022-11-18 19:35:12,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 153.74324324324326) internal successors, (11377), 74 states have internal predecessors, (11377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:12,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 184.0) internal successors, (13800), 75 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:12,381 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 184.0) internal successors, (13800), 75 states have internal predecessors, (13800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:12,381 INFO L175 Difference]: Start difference. First operand has 458 places, 844 transitions, 14487 flow. Second operand 74 states and 11377 transitions. [2022-11-18 19:35:12,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1751 transitions, 31287 flow [2022-11-18 19:35:13,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 1751 transitions, 30167 flow, removed 477 selfloop flow, removed 15 redundant places. [2022-11-18 19:35:13,387 INFO L231 Difference]: Finished difference. Result has 536 places, 1389 transitions, 27246 flow [2022-11-18 19:35:13,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=13494, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=827, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=644, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=27246, PETRI_PLACES=536, PETRI_TRANSITIONS=1389} [2022-11-18 19:35:13,388 INFO L288 CegarLoopForPetriNet]: 169 programPoint places, 367 predicate places. [2022-11-18 19:35:13,388 INFO L495 AbstractCegarLoop]: Abstraction has has 536 places, 1389 transitions, 27246 flow [2022-11-18 19:35:13,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:13,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:35:13,390 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 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] [2022-11-18 19:35:13,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:35:13,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:13,598 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:35:13,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:35:13,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1045702618, now seen corresponding path program 4 times [2022-11-18 19:35:13,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:35:13,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231003319] [2022-11-18 19:35:13,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:35:13,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:35:13,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:35:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:35:15,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:35:15,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231003319] [2022-11-18 19:35:15,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231003319] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:35:15,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422973283] [2022-11-18 19:35:15,268 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 19:35:15,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:35:15,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:35:15,272 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:35:15,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4561d790-5c57-4c32-aabc-064a9b088821/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:35:16,534 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 19:35:16,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:35:16,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-18 19:35:16,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:35:17,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:35:17,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:35:18,491 INFO L134 CoverageAnalysis]: Checked inductivity of 2404 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-18 19:35:18,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422973283] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:35:18,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:35:18,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2022-11-18 19:35:18,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122994010] [2022-11-18 19:35:18,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:35:18,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-18 19:35:18,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:35:18,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-18 19:35:18,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=1459, Unknown=0, NotChecked=0, Total=1892 [2022-11-18 19:35:18,519 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 184 [2022-11-18 19:35:18,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 1389 transitions, 27246 flow. Second operand has 44 states, 44 states have (on average 152.3181818181818) internal successors, (6702), 44 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:35:18,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:35:18,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 184 [2022-11-18 19:35:18,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand