./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN --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 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- 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-6b4ec56 [2022-11-20 10:51:20,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:51:20,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:51:20,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:51:20,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:51:20,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:51:20,547 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:51:20,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:51:20,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:51:20,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:51:20,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:51:20,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:51:20,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:51:20,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:51:20,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:51:20,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:51:20,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:51:20,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:51:20,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:51:20,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:51:20,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:51:20,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:51:20,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:51:20,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:51:20,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:51:20,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:51:20,597 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:51:20,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:51:20,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:51:20,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:51:20,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:51:20,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:51:20,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:51:20,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:51:20,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:51:20,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:51:20,606 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:51:20,606 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:51:20,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:51:20,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:51:20,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:51:20,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 10:51:20,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:51:20,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:51:20,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:51:20,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:51:20,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:51:20,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:51:20,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:51:20,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:51:20,656 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:51:20,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:51:20,657 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:51:20,658 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 10:51:20,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:51:20,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:51:20,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:51:20,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:51:20,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:51:20,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:51:20,659 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 10:51:20,659 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:51:20,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:51:20,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:51:20,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:51:20,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:51:20,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:51:20,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:51:20,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:51:20,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:51:20,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:51:20,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:51:20,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:51:20,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:51:20,663 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:51:20,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:51:20,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:51:20,663 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_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2022-11-20 10:51:20,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:51:21,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:51:21,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:51:21,021 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:51:21,022 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:51:21,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-11-20 10:51:24,057 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:51:24,346 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:51:24,347 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-11-20 10:51:24,360 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/data/20f0cbfa8/cd24a7653e594545b643add3ea69254d/FLAG326229de5 [2022-11-20 10:51:24,375 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/data/20f0cbfa8/cd24a7653e594545b643add3ea69254d [2022-11-20 10:51:24,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:51:24,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:51:24,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:51:24,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:51:24,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:51:24,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:24,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77f9792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24, skipping insertion in model container [2022-11-20 10:51:24,388 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:24,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:51:24,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:51:24,826 WARN L237 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_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2022-11-20 10:51:24,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:51:24,874 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:51:24,919 WARN L237 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_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/sv-benchmarks/c/goblint-regression/28-race_reach_24-sound_lock_racing.i[30176,30189] [2022-11-20 10:51:24,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:51:24,969 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:51:24,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24 WrapperNode [2022-11-20 10:51:24,970 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:51:24,971 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:51:24,971 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:51:24,971 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:51:24,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:25,004 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:25,026 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2022-11-20 10:51:25,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:51:25,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:51:25,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:51:25,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:51:25,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:25,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:25,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:25,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:25,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:25,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:25,060 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:25,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:25,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:51:25,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:51:25,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:51:25,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:51:25,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (1/1) ... [2022-11-20 10:51:25,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:51:25,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:25,108 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:51:25,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:51:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:51:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 10:51:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 10:51:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:51:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:51:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-20 10:51:25,181 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-20 10:51:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:51:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:51:25,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:51:25,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:51:25,183 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 10:51:25,326 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:51:25,342 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:51:25,701 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:51:25,708 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:51:25,708 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2022-11-20 10:51:25,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:25 BoogieIcfgContainer [2022-11-20 10:51:25,711 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:51:25,713 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:51:25,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:51:25,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:51:25,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:51:24" (1/3) ... [2022-11-20 10:51:25,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124e22d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:25, skipping insertion in model container [2022-11-20 10:51:25,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:51:24" (2/3) ... [2022-11-20 10:51:25,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@124e22d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:51:25, skipping insertion in model container [2022-11-20 10:51:25,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:51:25" (3/3) ... [2022-11-20 10:51:25,719 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2022-11-20 10:51:25,727 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 10:51:25,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:51:25,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-20 10:51:25,738 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 10:51:25,812 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-20 10:51:25,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 134 transitions, 276 flow [2022-11-20 10:51:25,977 INFO L130 PetriNetUnfolder]: 18/169 cut-off events. [2022-11-20 10:51:25,978 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-20 10:51:25,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 169 events. 18/169 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 373 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 80. Up to 4 conditions per place. [2022-11-20 10:51:25,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 134 transitions, 276 flow [2022-11-20 10:51:25,992 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 131 transitions, 270 flow [2022-11-20 10:51:26,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:51:26,019 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;@59feb980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:51:26,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-20 10:51:26,047 INFO L130 PetriNetUnfolder]: 3/72 cut-off events. [2022-11-20 10:51:26,049 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:51:26,050 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:26,051 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] [2022-11-20 10:51:26,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:51:26,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:26,057 INFO L85 PathProgramCache]: Analyzing trace with hash 759543818, now seen corresponding path program 1 times [2022-11-20 10:51:26,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590963528] [2022-11-20 10:51:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:26,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:26,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:26,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590963528] [2022-11-20 10:51:26,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590963528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:26,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:26,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:26,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415959410] [2022-11-20 10:51:26,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:26,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:26,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:26,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:26,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:26,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 134 [2022-11-20 10:51:26,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 131 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:26,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:26,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 134 [2022-11-20 10:51:26,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:26,824 INFO L130 PetriNetUnfolder]: 1/121 cut-off events. [2022-11-20 10:51:26,824 INFO L131 PetriNetUnfolder]: For 12/29 co-relation queries the response was YES. [2022-11-20 10:51:26,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 121 events. 1/121 cut-off events. For 12/29 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 41/153 useless extension candidates. Maximal degree in co-relation 51. Up to 7 conditions per place. [2022-11-20 10:51:26,827 INFO L137 encePairwiseOnDemand]: 116/134 looper letters, 10 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2022-11-20 10:51:26,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 119 transitions, 274 flow [2022-11-20 10:51:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:51:26,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:51:26,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 587 transitions. [2022-11-20 10:51:26,849 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761194029850746 [2022-11-20 10:51:26,849 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 587 transitions. [2022-11-20 10:51:26,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 587 transitions. [2022-11-20 10:51:26,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:26,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 587 transitions. [2022-11-20 10:51:26,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.4) internal successors, (587), 5 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:26,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:26,873 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:26,875 INFO L175 Difference]: Start difference. First operand has 122 places, 131 transitions, 270 flow. Second operand 5 states and 587 transitions. [2022-11-20 10:51:26,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 119 transitions, 274 flow [2022-11-20 10:51:26,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 119 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:51:26,887 INFO L231 Difference]: Finished difference. Result has 124 places, 117 transitions, 254 flow [2022-11-20 10:51:26,889 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=124, PETRI_TRANSITIONS=117} [2022-11-20 10:51:26,894 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 2 predicate places. [2022-11-20 10:51:26,895 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 117 transitions, 254 flow [2022-11-20 10:51:26,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:26,896 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:26,897 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] [2022-11-20 10:51:26,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:51:26,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:51:26,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:26,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1716994358, now seen corresponding path program 1 times [2022-11-20 10:51:26,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:26,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028973643] [2022-11-20 10:51:26,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:26,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:27,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:27,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028973643] [2022-11-20 10:51:27,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028973643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:27,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:27,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:27,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942499147] [2022-11-20 10:51:27,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:27,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:27,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:27,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:27,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:27,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 134 [2022-11-20 10:51:27,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 117 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:27,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 134 [2022-11-20 10:51:27,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:27,122 INFO L130 PetriNetUnfolder]: 8/166 cut-off events. [2022-11-20 10:51:27,123 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 10:51:27,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 166 events. 8/166 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 389 event pairs, 2 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 138. Up to 11 conditions per place. [2022-11-20 10:51:27,124 INFO L137 encePairwiseOnDemand]: 128/134 looper letters, 10 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2022-11-20 10:51:27,124 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 118 transitions, 284 flow [2022-11-20 10:51:27,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:51:27,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:51:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 561 transitions. [2022-11-20 10:51:27,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8373134328358209 [2022-11-20 10:51:27,127 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 561 transitions. [2022-11-20 10:51:27,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 561 transitions. [2022-11-20 10:51:27,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:27,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 561 transitions. [2022-11-20 10:51:27,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.2) internal successors, (561), 5 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,132 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,132 INFO L175 Difference]: Start difference. First operand has 124 places, 117 transitions, 254 flow. Second operand 5 states and 561 transitions. [2022-11-20 10:51:27,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 118 transitions, 284 flow [2022-11-20 10:51:27,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 118 transitions, 276 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 10:51:27,135 INFO L231 Difference]: Finished difference. Result has 122 places, 115 transitions, 250 flow [2022-11-20 10:51:27,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=134, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=250, PETRI_PLACES=122, PETRI_TRANSITIONS=115} [2022-11-20 10:51:27,137 INFO L288 CegarLoopForPetriNet]: 122 programPoint places, 0 predicate places. [2022-11-20 10:51:27,137 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 115 transitions, 250 flow [2022-11-20 10:51:27,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,137 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:27,138 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 10:51:27,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:51:27,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-20 10:51:27,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash 120615823, now seen corresponding path program 1 times [2022-11-20 10:51:27,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:27,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608708157] [2022-11-20 10:51:27,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:27,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:27,162 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:27,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:27,199 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:51:27,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2022-11-20 10:51:27,202 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-20 10:51:27,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-20 10:51:27,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-20 10:51:27,203 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-20 10:51:27,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-20 10:51:27,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2022-11-20 10:51:27,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2022-11-20 10:51:27,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2022-11-20 10:51:27,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-20 10:51:27,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-20 10:51:27,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-20 10:51:27,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-20 10:51:27,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:51:27,206 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 10:51:27,209 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:51:27,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-20 10:51:27,235 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 10:51:27,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 172 transitions, 362 flow [2022-11-20 10:51:27,316 INFO L130 PetriNetUnfolder]: 32/279 cut-off events. [2022-11-20 10:51:27,316 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-11-20 10:51:27,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 279 events. 32/279 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 793 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2022-11-20 10:51:27,320 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 172 transitions, 362 flow [2022-11-20 10:51:27,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 172 transitions, 362 flow [2022-11-20 10:51:27,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:51:27,326 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;@59feb980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:51:27,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-20 10:51:27,337 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-20 10:51:27,337 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:51:27,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:27,338 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] [2022-11-20 10:51:27,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:51:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:27,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1872846930, now seen corresponding path program 1 times [2022-11-20 10:51:27,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:27,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926539419] [2022-11-20 10:51:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:27,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:27,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:27,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926539419] [2022-11-20 10:51:27,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926539419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:27,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:27,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:27,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742833347] [2022-11-20 10:51:27,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:27,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:27,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:27,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:27,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:27,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 172 [2022-11-20 10:51:27,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 172 transitions, 362 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:27,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 172 [2022-11-20 10:51:27,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:27,548 INFO L130 PetriNetUnfolder]: 3/230 cut-off events. [2022-11-20 10:51:27,548 INFO L131 PetriNetUnfolder]: For 45/125 co-relation queries the response was YES. [2022-11-20 10:51:27,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 230 events. 3/230 cut-off events. For 45/125 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 520 event pairs, 0 based on Foata normal form. 125/330 useless extension candidates. Maximal degree in co-relation 149. Up to 21 conditions per place. [2022-11-20 10:51:27,550 INFO L137 encePairwiseOnDemand]: 148/172 looper letters, 19 selfloop transitions, 4 changer transitions 0/161 dead transitions. [2022-11-20 10:51:27,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 161 transitions, 386 flow [2022-11-20 10:51:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:51:27,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:51:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2022-11-20 10:51:27,553 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8744186046511628 [2022-11-20 10:51:27,553 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2022-11-20 10:51:27,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2022-11-20 10:51:27,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:27,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2022-11-20 10:51:27,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,559 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,559 INFO L175 Difference]: Start difference. First operand has 157 places, 172 transitions, 362 flow. Second operand 5 states and 752 transitions. [2022-11-20 10:51:27,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 161 transitions, 386 flow [2022-11-20 10:51:27,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 161 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:51:27,564 INFO L231 Difference]: Finished difference. Result has 163 places, 157 transitions, 358 flow [2022-11-20 10:51:27,564 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=358, PETRI_PLACES=163, PETRI_TRANSITIONS=157} [2022-11-20 10:51:27,565 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 6 predicate places. [2022-11-20 10:51:27,565 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 157 transitions, 358 flow [2022-11-20 10:51:27,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,566 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:27,566 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] [2022-11-20 10:51:27,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:51:27,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:51:27,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:27,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1039958490, now seen corresponding path program 1 times [2022-11-20 10:51:27,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:27,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730140703] [2022-11-20 10:51:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:27,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:27,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:27,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730140703] [2022-11-20 10:51:27,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730140703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:27,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:27,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:27,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647393320] [2022-11-20 10:51:27,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:27,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:27,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:27,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:27,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:27,663 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 172 [2022-11-20 10:51:27,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 157 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:27,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 172 [2022-11-20 10:51:27,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:27,954 INFO L130 PetriNetUnfolder]: 173/1189 cut-off events. [2022-11-20 10:51:27,954 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-11-20 10:51:27,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 1189 events. 173/1189 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 8701 event pairs, 77 based on Foata normal form. 0/1047 useless extension candidates. Maximal degree in co-relation 1508. Up to 206 conditions per place. [2022-11-20 10:51:27,966 INFO L137 encePairwiseOnDemand]: 165/172 looper letters, 36 selfloop transitions, 6 changer transitions 0/180 dead transitions. [2022-11-20 10:51:27,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 180 transitions, 506 flow [2022-11-20 10:51:27,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:51:27,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:51:27,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 721 transitions. [2022-11-20 10:51:27,969 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383720930232558 [2022-11-20 10:51:27,969 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 721 transitions. [2022-11-20 10:51:27,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 721 transitions. [2022-11-20 10:51:27,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:27,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 721 transitions. [2022-11-20 10:51:27,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.2) internal successors, (721), 5 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,974 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,975 INFO L175 Difference]: Start difference. First operand has 163 places, 157 transitions, 358 flow. Second operand 5 states and 721 transitions. [2022-11-20 10:51:27,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 180 transitions, 506 flow [2022-11-20 10:51:27,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 180 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:51:27,980 INFO L231 Difference]: Finished difference. Result has 169 places, 162 transitions, 405 flow [2022-11-20 10:51:27,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=405, PETRI_PLACES=169, PETRI_TRANSITIONS=162} [2022-11-20 10:51:27,981 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 12 predicate places. [2022-11-20 10:51:27,981 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 162 transitions, 405 flow [2022-11-20 10:51:27,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:27,982 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:27,982 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:27,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:51:27,983 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:51:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1302703895, now seen corresponding path program 1 times [2022-11-20 10:51:27,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:27,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699438048] [2022-11-20 10:51:27,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:27,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:28,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:51:28,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:28,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699438048] [2022-11-20 10:51:28,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699438048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:28,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:28,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:28,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426181461] [2022-11-20 10:51:28,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:28,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:28,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:28,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:28,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:28,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 172 [2022-11-20 10:51:28,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 162 transitions, 405 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:28,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 172 [2022-11-20 10:51:28,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:28,188 INFO L130 PetriNetUnfolder]: 6/356 cut-off events. [2022-11-20 10:51:28,188 INFO L131 PetriNetUnfolder]: For 104/238 co-relation queries the response was YES. [2022-11-20 10:51:28,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 356 events. 6/356 cut-off events. For 104/238 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1199 event pairs, 0 based on Foata normal form. 16/337 useless extension candidates. Maximal degree in co-relation 292. Up to 16 conditions per place. [2022-11-20 10:51:28,191 INFO L137 encePairwiseOnDemand]: 166/172 looper letters, 11 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2022-11-20 10:51:28,192 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 162 transitions, 441 flow [2022-11-20 10:51:28,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:51:28,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:51:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 707 transitions. [2022-11-20 10:51:28,194 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8220930232558139 [2022-11-20 10:51:28,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 707 transitions. [2022-11-20 10:51:28,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 707 transitions. [2022-11-20 10:51:28,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:28,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 707 transitions. [2022-11-20 10:51:28,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,202 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,202 INFO L175 Difference]: Start difference. First operand has 169 places, 162 transitions, 405 flow. Second operand 5 states and 707 transitions. [2022-11-20 10:51:28,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 162 transitions, 441 flow [2022-11-20 10:51:28,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 162 transitions, 438 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:51:28,207 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 422 flow [2022-11-20 10:51:28,208 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=422, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2022-11-20 10:51:28,212 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 15 predicate places. [2022-11-20 10:51:28,212 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 422 flow [2022-11-20 10:51:28,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:28,213 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:28,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:51:28,213 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:51:28,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:28,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1729115560, now seen corresponding path program 1 times [2022-11-20 10:51:28,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:28,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182380667] [2022-11-20 10:51:28,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:28,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:28,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:28,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:28,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182380667] [2022-11-20 10:51:28,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182380667] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:51:28,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932937655] [2022-11-20 10:51:28,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:28,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:28,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:28,370 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:51:28,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 10:51:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:28,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:51:28,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:28,620 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:28,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:51:28,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932937655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:28,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:51:28,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:51:28,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166905636] [2022-11-20 10:51:28,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:28,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:51:28,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:28,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:51:28,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:51:28,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 172 [2022-11-20 10:51:28,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:28,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 172 [2022-11-20 10:51:28,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:28,774 INFO L130 PetriNetUnfolder]: 6/355 cut-off events. [2022-11-20 10:51:28,774 INFO L131 PetriNetUnfolder]: For 109/232 co-relation queries the response was YES. [2022-11-20 10:51:28,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 355 events. 6/355 cut-off events. For 109/232 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1189 event pairs, 0 based on Foata normal form. 9/329 useless extension candidates. Maximal degree in co-relation 293. Up to 19 conditions per place. [2022-11-20 10:51:28,777 INFO L137 encePairwiseOnDemand]: 167/172 looper letters, 15 selfloop transitions, 6 changer transitions 0/164 dead transitions. [2022-11-20 10:51:28,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 164 transitions, 466 flow [2022-11-20 10:51:28,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:51:28,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:51:28,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 988 transitions. [2022-11-20 10:51:28,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8205980066445183 [2022-11-20 10:51:28,780 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 988 transitions. [2022-11-20 10:51:28,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 988 transitions. [2022-11-20 10:51:28,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:28,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 988 transitions. [2022-11-20 10:51:28,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.14285714285714) internal successors, (988), 7 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,787 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 172.0) internal successors, (1376), 8 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,787 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 422 flow. Second operand 7 states and 988 transitions. [2022-11-20 10:51:28,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 164 transitions, 466 flow [2022-11-20 10:51:28,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 164 transitions, 454 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:51:28,792 INFO L231 Difference]: Finished difference. Result has 174 places, 161 transitions, 418 flow [2022-11-20 10:51:28,792 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=418, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2022-11-20 10:51:28,793 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 17 predicate places. [2022-11-20 10:51:28,793 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 418 flow [2022-11-20 10:51:28,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.66666666666666) internal successors, (844), 6 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:28,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:28,794 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] [2022-11-20 10:51:28,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:29,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:29,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:51:29,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:29,001 INFO L85 PathProgramCache]: Analyzing trace with hash -635786378, now seen corresponding path program 1 times [2022-11-20 10:51:29,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:29,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008201757] [2022-11-20 10:51:29,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:29,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:29,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:29,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:29,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008201757] [2022-11-20 10:51:29,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008201757] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:29,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:29,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:51:29,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673079425] [2022-11-20 10:51:29,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:29,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:51:29,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:29,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:51:29,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:51:29,154 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 172 [2022-11-20 10:51:29,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 161 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 131.5) internal successors, (789), 6 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:29,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 172 [2022-11-20 10:51:29,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:29,649 INFO L130 PetriNetUnfolder]: 342/1726 cut-off events. [2022-11-20 10:51:29,650 INFO L131 PetriNetUnfolder]: For 315/319 co-relation queries the response was YES. [2022-11-20 10:51:29,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2645 conditions, 1726 events. 342/1726 cut-off events. For 315/319 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13915 event pairs, 70 based on Foata normal form. 3/1525 useless extension candidates. Maximal degree in co-relation 1914. Up to 237 conditions per place. [2022-11-20 10:51:29,667 INFO L137 encePairwiseOnDemand]: 161/172 looper letters, 60 selfloop transitions, 19 changer transitions 0/211 dead transitions. [2022-11-20 10:51:29,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 211 transitions, 726 flow [2022-11-20 10:51:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:51:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:51:29,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1251 transitions. [2022-11-20 10:51:29,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8081395348837209 [2022-11-20 10:51:29,671 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1251 transitions. [2022-11-20 10:51:29,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1251 transitions. [2022-11-20 10:51:29,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:29,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1251 transitions. [2022-11-20 10:51:29,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 139.0) internal successors, (1251), 9 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,678 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,678 INFO L175 Difference]: Start difference. First operand has 174 places, 161 transitions, 418 flow. Second operand 9 states and 1251 transitions. [2022-11-20 10:51:29,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 211 transitions, 726 flow [2022-11-20 10:51:29,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 211 transitions, 715 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 10:51:29,684 INFO L231 Difference]: Finished difference. Result has 183 places, 173 transitions, 533 flow [2022-11-20 10:51:29,685 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=533, PETRI_PLACES=183, PETRI_TRANSITIONS=173} [2022-11-20 10:51:29,685 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2022-11-20 10:51:29,686 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 173 transitions, 533 flow [2022-11-20 10:51:29,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.5) internal successors, (789), 6 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,686 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:29,686 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] [2022-11-20 10:51:29,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 10:51:29,687 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:51:29,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:29,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1765459314, now seen corresponding path program 1 times [2022-11-20 10:51:29,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:29,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613948829] [2022-11-20 10:51:29,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:29,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:29,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:29,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613948829] [2022-11-20 10:51:29,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613948829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:29,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:29,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:51:29,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688610728] [2022-11-20 10:51:29,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:29,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:51:29,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:29,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:51:29,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:51:29,801 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 172 [2022-11-20 10:51:29,802 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 173 transitions, 533 flow. Second operand has 6 states, 6 states have (on average 131.66666666666666) internal successors, (790), 6 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:29,802 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:29,803 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 172 [2022-11-20 10:51:29,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:30,289 INFO L130 PetriNetUnfolder]: 320/1670 cut-off events. [2022-11-20 10:51:30,290 INFO L131 PetriNetUnfolder]: For 990/1010 co-relation queries the response was YES. [2022-11-20 10:51:30,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2969 conditions, 1670 events. 320/1670 cut-off events. For 990/1010 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 13515 event pairs, 65 based on Foata normal form. 34/1548 useless extension candidates. Maximal degree in co-relation 2146. Up to 272 conditions per place. [2022-11-20 10:51:30,308 INFO L137 encePairwiseOnDemand]: 161/172 looper letters, 65 selfloop transitions, 19 changer transitions 0/216 dead transitions. [2022-11-20 10:51:30,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 216 transitions, 868 flow [2022-11-20 10:51:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:51:30,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:51:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1253 transitions. [2022-11-20 10:51:30,314 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8094315245478036 [2022-11-20 10:51:30,314 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1253 transitions. [2022-11-20 10:51:30,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1253 transitions. [2022-11-20 10:51:30,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:30,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1253 transitions. [2022-11-20 10:51:30,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 139.22222222222223) internal successors, (1253), 9 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,322 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 172.0) internal successors, (1720), 10 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,322 INFO L175 Difference]: Start difference. First operand has 183 places, 173 transitions, 533 flow. Second operand 9 states and 1253 transitions. [2022-11-20 10:51:30,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 216 transitions, 868 flow [2022-11-20 10:51:30,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 216 transitions, 827 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-20 10:51:30,333 INFO L231 Difference]: Finished difference. Result has 189 places, 177 transitions, 580 flow [2022-11-20 10:51:30,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=580, PETRI_PLACES=189, PETRI_TRANSITIONS=177} [2022-11-20 10:51:30,335 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 32 predicate places. [2022-11-20 10:51:30,336 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 177 transitions, 580 flow [2022-11-20 10:51:30,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 131.66666666666666) internal successors, (790), 6 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,337 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:30,338 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:30,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 10:51:30,338 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:51:30,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:30,338 INFO L85 PathProgramCache]: Analyzing trace with hash 611387075, now seen corresponding path program 1 times [2022-11-20 10:51:30,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:30,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685834060] [2022-11-20 10:51:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:30,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:30,456 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:51:30,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:30,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685834060] [2022-11-20 10:51:30,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685834060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:30,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:30,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:30,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4754032] [2022-11-20 10:51:30,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:30,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:30,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:30,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:30,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:30,463 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 172 [2022-11-20 10:51:30,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 177 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,464 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:30,464 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 172 [2022-11-20 10:51:30,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:30,950 INFO L130 PetriNetUnfolder]: 273/1862 cut-off events. [2022-11-20 10:51:30,950 INFO L131 PetriNetUnfolder]: For 1158/1205 co-relation queries the response was YES. [2022-11-20 10:51:30,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3245 conditions, 1862 events. 273/1862 cut-off events. For 1158/1205 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 15790 event pairs, 133 based on Foata normal form. 24/1696 useless extension candidates. Maximal degree in co-relation 2553. Up to 362 conditions per place. [2022-11-20 10:51:30,975 INFO L137 encePairwiseOnDemand]: 165/172 looper letters, 55 selfloop transitions, 7 changer transitions 0/203 dead transitions. [2022-11-20 10:51:30,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 203 transitions, 842 flow [2022-11-20 10:51:30,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:51:30,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:51:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 719 transitions. [2022-11-20 10:51:30,978 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.836046511627907 [2022-11-20 10:51:30,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 719 transitions. [2022-11-20 10:51:30,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 719 transitions. [2022-11-20 10:51:30,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:30,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 719 transitions. [2022-11-20 10:51:30,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,984 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 172.0) internal successors, (1032), 6 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:30,985 INFO L175 Difference]: Start difference. First operand has 189 places, 177 transitions, 580 flow. Second operand 5 states and 719 transitions. [2022-11-20 10:51:30,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 203 transitions, 842 flow [2022-11-20 10:51:30,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 203 transitions, 814 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 10:51:31,001 INFO L231 Difference]: Finished difference. Result has 192 places, 180 transitions, 610 flow [2022-11-20 10:51:31,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=172, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=610, PETRI_PLACES=192, PETRI_TRANSITIONS=180} [2022-11-20 10:51:31,004 INFO L288 CegarLoopForPetriNet]: 157 programPoint places, 35 predicate places. [2022-11-20 10:51:31,004 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 180 transitions, 610 flow [2022-11-20 10:51:31,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:31,005 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 10:51:31,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 10:51:31,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-20 10:51:31,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:31,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1818698688, now seen corresponding path program 1 times [2022-11-20 10:51:31,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:31,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53922257] [2022-11-20 10:51:31,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:31,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:31,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:51:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:51:31,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:51:31,074 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:51:31,074 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-20 10:51:31,074 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-20 10:51:31,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-20 10:51:31,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-20 10:51:31,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-20 10:51:31,075 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-20 10:51:31,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-20 10:51:31,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-20 10:51:31,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-20 10:51:31,076 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-20 10:51:31,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-20 10:51:31,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-20 10:51:31,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-20 10:51:31,077 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-20 10:51:31,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-20 10:51:31,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-20 10:51:31,078 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-20 10:51:31,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 10:51:31,079 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:31,079 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:51:31,079 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-20 10:51:31,131 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 10:51:31,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 190 places, 210 transitions, 450 flow [2022-11-20 10:51:31,208 INFO L130 PetriNetUnfolder]: 51/430 cut-off events. [2022-11-20 10:51:31,208 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-11-20 10:51:31,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458 conditions, 430 events. 51/430 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1399 event pairs, 1 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2022-11-20 10:51:31,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 190 places, 210 transitions, 450 flow [2022-11-20 10:51:31,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 190 places, 210 transitions, 450 flow [2022-11-20 10:51:31,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:51:31,224 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;@59feb980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:51:31,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-20 10:51:31,238 INFO L130 PetriNetUnfolder]: 3/74 cut-off events. [2022-11-20 10:51:31,238 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:51:31,238 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:31,239 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] [2022-11-20 10:51:31,239 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:51:31,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:31,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1797766674, now seen corresponding path program 1 times [2022-11-20 10:51:31,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:31,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009576539] [2022-11-20 10:51:31,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:31,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:31,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:31,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:31,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009576539] [2022-11-20 10:51:31,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009576539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:31,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:31,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:31,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624963782] [2022-11-20 10:51:31,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:31,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:31,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:31,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:31,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:31,318 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 210 [2022-11-20 10:51:31,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 210 transitions, 450 flow. Second operand has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:31,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 210 [2022-11-20 10:51:31,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:31,454 INFO L130 PetriNetUnfolder]: 8/366 cut-off events. [2022-11-20 10:51:31,454 INFO L131 PetriNetUnfolder]: For 96/244 co-relation queries the response was YES. [2022-11-20 10:51:31,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 366 events. 8/366 cut-off events. For 96/244 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1124 event pairs, 1 based on Foata normal form. 306/627 useless extension candidates. Maximal degree in co-relation 266. Up to 40 conditions per place. [2022-11-20 10:51:31,460 INFO L137 encePairwiseOnDemand]: 180/210 looper letters, 21 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2022-11-20 10:51:31,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 193 transitions, 466 flow [2022-11-20 10:51:31,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:51:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:51:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 910 transitions. [2022-11-20 10:51:31,463 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8666666666666667 [2022-11-20 10:51:31,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 910 transitions. [2022-11-20 10:51:31,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 910 transitions. [2022-11-20 10:51:31,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:31,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 910 transitions. [2022-11-20 10:51:31,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,471 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,471 INFO L175 Difference]: Start difference. First operand has 190 places, 210 transitions, 450 flow. Second operand 5 states and 910 transitions. [2022-11-20 10:51:31,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 193 transitions, 466 flow [2022-11-20 10:51:31,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 193 transitions, 466 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:51:31,476 INFO L231 Difference]: Finished difference. Result has 196 places, 189 transitions, 434 flow [2022-11-20 10:51:31,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=434, PETRI_PLACES=196, PETRI_TRANSITIONS=189} [2022-11-20 10:51:31,478 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 6 predicate places. [2022-11-20 10:51:31,479 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 189 transitions, 434 flow [2022-11-20 10:51:31,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,479 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:31,480 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] [2022-11-20 10:51:31,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 10:51:31,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:51:31,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:31,481 INFO L85 PathProgramCache]: Analyzing trace with hash -806021442, now seen corresponding path program 1 times [2022-11-20 10:51:31,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:31,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744172116] [2022-11-20 10:51:31,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:31,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:31,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:31,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:31,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744172116] [2022-11-20 10:51:31,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744172116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:31,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:31,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:31,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054696831] [2022-11-20 10:51:31,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:31,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:31,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:31,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:31,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:31,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 210 [2022-11-20 10:51:31,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 189 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:31,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:31,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 210 [2022-11-20 10:51:31,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:33,586 INFO L130 PetriNetUnfolder]: 1859/8080 cut-off events. [2022-11-20 10:51:33,587 INFO L131 PetriNetUnfolder]: For 1117/1117 co-relation queries the response was YES. [2022-11-20 10:51:33,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11535 conditions, 8080 events. 1859/8080 cut-off events. For 1117/1117 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 88684 event pairs, 779 based on Foata normal form. 0/7063 useless extension candidates. Maximal degree in co-relation 11460. Up to 1995 conditions per place. [2022-11-20 10:51:33,714 INFO L137 encePairwiseOnDemand]: 202/210 looper letters, 52 selfloop transitions, 8 changer transitions 0/224 dead transitions. [2022-11-20 10:51:33,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 224 transitions, 666 flow [2022-11-20 10:51:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:51:33,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:51:33,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 869 transitions. [2022-11-20 10:51:33,717 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8276190476190476 [2022-11-20 10:51:33,718 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 869 transitions. [2022-11-20 10:51:33,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 869 transitions. [2022-11-20 10:51:33,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:33,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 869 transitions. [2022-11-20 10:51:33,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:33,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:33,725 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:33,725 INFO L175 Difference]: Start difference. First operand has 196 places, 189 transitions, 434 flow. Second operand 5 states and 869 transitions. [2022-11-20 10:51:33,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 224 transitions, 666 flow [2022-11-20 10:51:33,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 224 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:51:33,733 INFO L231 Difference]: Finished difference. Result has 202 places, 196 transitions, 496 flow [2022-11-20 10:51:33,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=496, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2022-11-20 10:51:33,735 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 12 predicate places. [2022-11-20 10:51:33,735 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 496 flow [2022-11-20 10:51:33,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:33,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:33,736 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:33,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 10:51:33,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:51:33,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:33,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1349571359, now seen corresponding path program 1 times [2022-11-20 10:51:33,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:33,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30467034] [2022-11-20 10:51:33,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:33,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:51:33,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:33,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30467034] [2022-11-20 10:51:33,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30467034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:33,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:33,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:33,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695402130] [2022-11-20 10:51:33,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:33,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:33,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:33,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:33,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:33,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 210 [2022-11-20 10:51:33,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 496 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:33,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:33,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 210 [2022-11-20 10:51:33,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:34,110 INFO L130 PetriNetUnfolder]: 38/869 cut-off events. [2022-11-20 10:51:34,110 INFO L131 PetriNetUnfolder]: For 346/858 co-relation queries the response was YES. [2022-11-20 10:51:34,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 869 events. 38/869 cut-off events. For 346/858 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5198 event pairs, 7 based on Foata normal form. 41/798 useless extension candidates. Maximal degree in co-relation 774. Up to 52 conditions per place. [2022-11-20 10:51:34,128 INFO L137 encePairwiseOnDemand]: 204/210 looper letters, 13 selfloop transitions, 8 changer transitions 0/196 dead transitions. [2022-11-20 10:51:34,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 196 transitions, 536 flow [2022-11-20 10:51:34,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:51:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:51:34,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 859 transitions. [2022-11-20 10:51:34,132 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8180952380952381 [2022-11-20 10:51:34,132 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 859 transitions. [2022-11-20 10:51:34,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 859 transitions. [2022-11-20 10:51:34,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:34,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 859 transitions. [2022-11-20 10:51:34,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.8) internal successors, (859), 5 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,139 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,139 INFO L175 Difference]: Start difference. First operand has 202 places, 196 transitions, 496 flow. Second operand 5 states and 859 transitions. [2022-11-20 10:51:34,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 196 transitions, 536 flow [2022-11-20 10:51:34,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 196 transitions, 532 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:51:34,146 INFO L231 Difference]: Finished difference. Result has 205 places, 196 transitions, 512 flow [2022-11-20 10:51:34,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=205, PETRI_TRANSITIONS=196} [2022-11-20 10:51:34,148 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 15 predicate places. [2022-11-20 10:51:34,148 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 196 transitions, 512 flow [2022-11-20 10:51:34,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:34,149 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:34,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 10:51:34,149 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:51:34,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:34,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1112960142, now seen corresponding path program 1 times [2022-11-20 10:51:34,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:34,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014796384] [2022-11-20 10:51:34,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:34,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:34,268 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:34,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:34,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014796384] [2022-11-20 10:51:34,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014796384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:51:34,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613970023] [2022-11-20 10:51:34,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:34,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:34,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:34,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:51:34,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 10:51:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:34,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:51:34,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:34,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:51:34,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613970023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:34,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 10:51:34,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 10:51:34,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615782024] [2022-11-20 10:51:34,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:34,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:51:34,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:34,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:51:34,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:51:34,469 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 210 [2022-11-20 10:51:34,470 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 196 transitions, 512 flow. Second operand has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,471 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:34,471 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 210 [2022-11-20 10:51:34,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:34,775 INFO L130 PetriNetUnfolder]: 38/867 cut-off events. [2022-11-20 10:51:34,776 INFO L131 PetriNetUnfolder]: For 343/808 co-relation queries the response was YES. [2022-11-20 10:51:34,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 867 events. 38/867 cut-off events. For 343/808 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5204 event pairs, 7 based on Foata normal form. 18/773 useless extension candidates. Maximal degree in co-relation 774. Up to 58 conditions per place. [2022-11-20 10:51:34,791 INFO L137 encePairwiseOnDemand]: 205/210 looper letters, 17 selfloop transitions, 6 changer transitions 0/198 dead transitions. [2022-11-20 10:51:34,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 198 transitions, 560 flow [2022-11-20 10:51:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:51:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 10:51:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1200 transitions. [2022-11-20 10:51:34,794 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8163265306122449 [2022-11-20 10:51:34,794 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1200 transitions. [2022-11-20 10:51:34,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1200 transitions. [2022-11-20 10:51:34,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:34,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1200 transitions. [2022-11-20 10:51:34,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 171.42857142857142) internal successors, (1200), 7 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,802 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 210.0) internal successors, (1680), 8 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,802 INFO L175 Difference]: Start difference. First operand has 205 places, 196 transitions, 512 flow. Second operand 7 states and 1200 transitions. [2022-11-20 10:51:34,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 198 transitions, 560 flow [2022-11-20 10:51:34,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 198 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 10:51:34,807 INFO L231 Difference]: Finished difference. Result has 207 places, 195 transitions, 508 flow [2022-11-20 10:51:34,808 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=508, PETRI_PLACES=207, PETRI_TRANSITIONS=195} [2022-11-20 10:51:34,808 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 17 predicate places. [2022-11-20 10:51:34,808 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 195 transitions, 508 flow [2022-11-20 10:51:34,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:34,809 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:34,809 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] [2022-11-20 10:51:34,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:51:35,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 10:51:35,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:51:35,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:35,016 INFO L85 PathProgramCache]: Analyzing trace with hash -29537492, now seen corresponding path program 1 times [2022-11-20 10:51:35,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:35,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950161583] [2022-11-20 10:51:35,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:35,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:35,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:35,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950161583] [2022-11-20 10:51:35,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950161583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:35,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:35,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:51:35,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156703757] [2022-11-20 10:51:35,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:35,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:51:35,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:35,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:51:35,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:51:35,130 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 210 [2022-11-20 10:51:35,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 195 transitions, 508 flow. Second operand has 6 states, 6 states have (on average 157.5) internal successors, (945), 6 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:35,131 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:35,131 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 210 [2022-11-20 10:51:35,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:38,556 INFO L130 PetriNetUnfolder]: 4010/15162 cut-off events. [2022-11-20 10:51:38,556 INFO L131 PetriNetUnfolder]: For 4241/4241 co-relation queries the response was YES. [2022-11-20 10:51:38,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24193 conditions, 15162 events. 4010/15162 cut-off events. For 4241/4241 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 183241 event pairs, 1122 based on Foata normal form. 0/13282 useless extension candidates. Maximal degree in co-relation 10033. Up to 2727 conditions per place. [2022-11-20 10:51:38,724 INFO L137 encePairwiseOnDemand]: 197/210 looper letters, 100 selfloop transitions, 27 changer transitions 0/285 dead transitions. [2022-11-20 10:51:38,724 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 285 transitions, 1088 flow [2022-11-20 10:51:38,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:51:38,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:51:38,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1533 transitions. [2022-11-20 10:51:38,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8111111111111111 [2022-11-20 10:51:38,728 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1533 transitions. [2022-11-20 10:51:38,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1533 transitions. [2022-11-20 10:51:38,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:38,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1533 transitions. [2022-11-20 10:51:38,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 170.33333333333334) internal successors, (1533), 9 states have internal predecessors, (1533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:38,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:38,752 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:38,753 INFO L175 Difference]: Start difference. First operand has 207 places, 195 transitions, 508 flow. Second operand 9 states and 1533 transitions. [2022-11-20 10:51:38,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 285 transitions, 1088 flow [2022-11-20 10:51:38,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 285 transitions, 1077 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 10:51:38,761 INFO L231 Difference]: Finished difference. Result has 216 places, 214 transitions, 701 flow [2022-11-20 10:51:38,762 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=701, PETRI_PLACES=216, PETRI_TRANSITIONS=214} [2022-11-20 10:51:38,762 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 26 predicate places. [2022-11-20 10:51:38,762 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 214 transitions, 701 flow [2022-11-20 10:51:38,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.5) internal successors, (945), 6 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:38,763 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:38,764 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] [2022-11-20 10:51:38,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 10:51:38,764 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:51:38,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:38,764 INFO L85 PathProgramCache]: Analyzing trace with hash -915661418, now seen corresponding path program 1 times [2022-11-20 10:51:38,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:38,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612108641] [2022-11-20 10:51:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:38,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:38,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:38,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:38,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:38,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612108641] [2022-11-20 10:51:38,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612108641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:38,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:38,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:51:38,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656523897] [2022-11-20 10:51:38,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:38,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:51:38,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:38,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:51:38,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:51:38,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 210 [2022-11-20 10:51:38,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 214 transitions, 701 flow. Second operand has 6 states, 6 states have (on average 157.66666666666666) internal successors, (946), 6 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:38,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:38,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 210 [2022-11-20 10:51:38,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:41,905 INFO L130 PetriNetUnfolder]: 3801/14486 cut-off events. [2022-11-20 10:51:41,906 INFO L131 PetriNetUnfolder]: For 13235/13427 co-relation queries the response was YES. [2022-11-20 10:51:41,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28170 conditions, 14486 events. 3801/14486 cut-off events. For 13235/13427 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 172189 event pairs, 1157 based on Foata normal form. 226/13155 useless extension candidates. Maximal degree in co-relation 19336. Up to 2976 conditions per place. [2022-11-20 10:51:42,089 INFO L137 encePairwiseOnDemand]: 197/210 looper letters, 107 selfloop transitions, 27 changer transitions 0/292 dead transitions. [2022-11-20 10:51:42,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 292 transitions, 1346 flow [2022-11-20 10:51:42,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:51:42,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:51:42,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1531 transitions. [2022-11-20 10:51:42,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.81005291005291 [2022-11-20 10:51:42,096 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1531 transitions. [2022-11-20 10:51:42,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1531 transitions. [2022-11-20 10:51:42,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:42,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1531 transitions. [2022-11-20 10:51:42,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 170.11111111111111) internal successors, (1531), 9 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:42,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:42,107 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:42,108 INFO L175 Difference]: Start difference. First operand has 216 places, 214 transitions, 701 flow. Second operand 9 states and 1531 transitions. [2022-11-20 10:51:42,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 292 transitions, 1346 flow [2022-11-20 10:51:42,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 292 transitions, 1279 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-11-20 10:51:42,155 INFO L231 Difference]: Finished difference. Result has 222 places, 222 transitions, 782 flow [2022-11-20 10:51:42,156 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=782, PETRI_PLACES=222, PETRI_TRANSITIONS=222} [2022-11-20 10:51:42,158 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 32 predicate places. [2022-11-20 10:51:42,158 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 222 transitions, 782 flow [2022-11-20 10:51:42,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.66666666666666) internal successors, (946), 6 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:42,158 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:42,159 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:51:42,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 10:51:42,159 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:51:42,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:42,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2052602187, now seen corresponding path program 1 times [2022-11-20 10:51:42,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:42,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139342079] [2022-11-20 10:51:42,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:42,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:51:42,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:42,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139342079] [2022-11-20 10:51:42,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139342079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:42,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:42,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:51:42,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712136318] [2022-11-20 10:51:42,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:42,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:51:42,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:42,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:51:42,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:51:42,263 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 210 [2022-11-20 10:51:42,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 222 transitions, 782 flow. Second operand has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:42,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:42,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 210 [2022-11-20 10:51:42,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:45,908 INFO L130 PetriNetUnfolder]: 4311/18758 cut-off events. [2022-11-20 10:51:45,908 INFO L131 PetriNetUnfolder]: For 17027/17501 co-relation queries the response was YES. [2022-11-20 10:51:46,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36446 conditions, 18758 events. 4311/18758 cut-off events. For 17027/17501 co-relation queries the response was YES. Maximal size of possible extension queue 759. Compared 240650 event pairs, 2448 based on Foata normal form. 230/16796 useless extension candidates. Maximal degree in co-relation 25675. Up to 4728 conditions per place. [2022-11-20 10:51:46,180 INFO L137 encePairwiseOnDemand]: 202/210 looper letters, 93 selfloop transitions, 11 changer transitions 0/271 dead transitions. [2022-11-20 10:51:46,180 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 271 transitions, 1298 flow [2022-11-20 10:51:46,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:51:46,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:51:46,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 867 transitions. [2022-11-20 10:51:46,184 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8257142857142857 [2022-11-20 10:51:46,184 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 867 transitions. [2022-11-20 10:51:46,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 867 transitions. [2022-11-20 10:51:46,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:46,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 867 transitions. [2022-11-20 10:51:46,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.4) internal successors, (867), 5 states have internal predecessors, (867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,191 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,191 INFO L175 Difference]: Start difference. First operand has 222 places, 222 transitions, 782 flow. Second operand 5 states and 867 transitions. [2022-11-20 10:51:46,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 271 transitions, 1298 flow [2022-11-20 10:51:46,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 271 transitions, 1256 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 10:51:46,288 INFO L231 Difference]: Finished difference. Result has 225 places, 227 transitions, 832 flow [2022-11-20 10:51:46,288 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=832, PETRI_PLACES=225, PETRI_TRANSITIONS=227} [2022-11-20 10:51:46,289 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 35 predicate places. [2022-11-20 10:51:46,289 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 227 transitions, 832 flow [2022-11-20 10:51:46,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.25) internal successors, (649), 4 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,290 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:46,290 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 10:51:46,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 10:51:46,291 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:51:46,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:46,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1449777911, now seen corresponding path program 1 times [2022-11-20 10:51:46,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:46,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956044443] [2022-11-20 10:51:46,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:46,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:51:46,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:46,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956044443] [2022-11-20 10:51:46,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956044443] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:51:46,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:51:46,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:51:46,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044550235] [2022-11-20 10:51:46,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:51:46,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:51:46,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:51:46,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:51:46,435 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 210 [2022-11-20 10:51:46,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 227 transitions, 832 flow. Second operand has 6 states, 6 states have (on average 157.66666666666666) internal successors, (946), 6 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:46,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:46,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 210 [2022-11-20 10:51:46,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:51:53,125 INFO L130 PetriNetUnfolder]: 9326/35771 cut-off events. [2022-11-20 10:51:53,126 INFO L131 PetriNetUnfolder]: For 32066/33320 co-relation queries the response was YES. [2022-11-20 10:51:53,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71636 conditions, 35771 events. 9326/35771 cut-off events. For 32066/33320 co-relation queries the response was YES. Maximal size of possible extension queue 1622. Compared 502640 event pairs, 3517 based on Foata normal form. 444/32618 useless extension candidates. Maximal degree in co-relation 49388. Up to 7085 conditions per place. [2022-11-20 10:51:53,610 INFO L137 encePairwiseOnDemand]: 197/210 looper letters, 149 selfloop transitions, 46 changer transitions 0/357 dead transitions. [2022-11-20 10:51:53,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 357 transitions, 1978 flow [2022-11-20 10:51:53,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:51:53,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:51:53,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1530 transitions. [2022-11-20 10:51:53,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2022-11-20 10:51:53,622 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1530 transitions. [2022-11-20 10:51:53,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1530 transitions. [2022-11-20 10:51:53,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:51:53,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1530 transitions. [2022-11-20 10:51:53,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 170.0) internal successors, (1530), 9 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:53,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:53,636 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:53,637 INFO L175 Difference]: Start difference. First operand has 225 places, 227 transitions, 832 flow. Second operand 9 states and 1530 transitions. [2022-11-20 10:51:53,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 357 transitions, 1978 flow [2022-11-20 10:51:53,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 357 transitions, 1972 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:51:53,843 INFO L231 Difference]: Finished difference. Result has 238 places, 262 transitions, 1316 flow [2022-11-20 10:51:53,843 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1316, PETRI_PLACES=238, PETRI_TRANSITIONS=262} [2022-11-20 10:51:53,845 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 48 predicate places. [2022-11-20 10:51:53,846 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 262 transitions, 1316 flow [2022-11-20 10:51:53,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.66666666666666) internal successors, (946), 6 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:53,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:51:53,847 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 10:51:53,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 10:51:53,847 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:51:53,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:51:53,849 INFO L85 PathProgramCache]: Analyzing trace with hash 590430169, now seen corresponding path program 1 times [2022-11-20 10:51:53,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:51:53,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899584145] [2022-11-20 10:51:53,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:53,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:51:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:54,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:51:54,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899584145] [2022-11-20 10:51:54,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899584145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:51:54,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736410486] [2022-11-20 10:51:54,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:51:54,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:51:54,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:51:54,085 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 10:51:54,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 10:51:54,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:51:54,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 10:51:54,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:51:54,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:54,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:51:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:51:54,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736410486] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:51:54,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 10:51:54,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-11-20 10:51:54,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388170600] [2022-11-20 10:51:54,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 10:51:54,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:51:54,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:51:54,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:51:54,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 10:51:54,494 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 210 [2022-11-20 10:51:54,495 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 262 transitions, 1316 flow. Second operand has 14 states, 14 states have (on average 126.14285714285714) internal successors, (1766), 14 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:51:54,496 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:51:54,496 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 210 [2022-11-20 10:51:54,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:02,544 INFO L130 PetriNetUnfolder]: 8730/33414 cut-off events. [2022-11-20 10:52:02,544 INFO L131 PetriNetUnfolder]: For 44820/45497 co-relation queries the response was YES. [2022-11-20 10:52:02,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70233 conditions, 33414 events. 8730/33414 cut-off events. For 44820/45497 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 438238 event pairs, 1230 based on Foata normal form. 2348/33332 useless extension candidates. Maximal degree in co-relation 57289. Up to 6256 conditions per place. [2022-11-20 10:52:02,924 INFO L137 encePairwiseOnDemand]: 185/210 looper letters, 490 selfloop transitions, 232 changer transitions 0/850 dead transitions. [2022-11-20 10:52:02,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 850 transitions, 5607 flow [2022-11-20 10:52:02,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 10:52:02,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 10:52:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 6115 transitions. [2022-11-20 10:52:02,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.647089947089947 [2022-11-20 10:52:02,941 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 6115 transitions. [2022-11-20 10:52:02,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 6115 transitions. [2022-11-20 10:52:02,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:02,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 6115 transitions. [2022-11-20 10:52:02,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 135.88888888888889) internal successors, (6115), 45 states have internal predecessors, (6115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:02,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:02,987 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:02,987 INFO L175 Difference]: Start difference. First operand has 238 places, 262 transitions, 1316 flow. Second operand 45 states and 6115 transitions. [2022-11-20 10:52:02,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 850 transitions, 5607 flow [2022-11-20 10:52:03,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 850 transitions, 5540 flow, removed 17 selfloop flow, removed 3 redundant places. [2022-11-20 10:52:03,284 INFO L231 Difference]: Finished difference. Result has 298 places, 451 transitions, 3427 flow [2022-11-20 10:52:03,285 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1272, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=3427, PETRI_PLACES=298, PETRI_TRANSITIONS=451} [2022-11-20 10:52:03,285 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 108 predicate places. [2022-11-20 10:52:03,285 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 451 transitions, 3427 flow [2022-11-20 10:52:03,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 126.14285714285714) internal successors, (1766), 14 states have internal predecessors, (1766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:03,286 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:03,287 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-20 10:52:03,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:52:03,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:03,493 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:52:03,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:03,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1993443043, now seen corresponding path program 1 times [2022-11-20 10:52:03,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:03,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926823340] [2022-11-20 10:52:03,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:03,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:03,650 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 10:52:03,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:03,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926823340] [2022-11-20 10:52:03,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926823340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:03,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:03,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:52:03,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122142817] [2022-11-20 10:52:03,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:03,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:52:03,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:03,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:52:03,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:52:03,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 210 [2022-11-20 10:52:03,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 451 transitions, 3427 flow. Second operand has 6 states, 6 states have (on average 157.83333333333334) internal successors, (947), 6 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:03,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:03,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 210 [2022-11-20 10:52:03,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:08,868 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([819] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_13| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread2of3ForFork0_thidvar0_4) InVars {t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_13|} OutVars{t_funThread2of3ForFork0_thidvar0=v_t_funThread2of3ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_13|} AuxVars[] AssignedVars[][328], [1054#true, Black: 1021#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1011#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 989#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1005#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 995#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 997#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 987#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 965#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 993#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 961#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1007#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1023#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1001#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1013#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1017#(and (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 108#L702-16true, Black: 427#(<= ~global~0 1), Black: 428#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 432#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 426#(= |t_funThread1of3ForFork0_#t~post5| 0), t_funThread1of3ForFork0InUse, t_funThread2of3ForFork0NotInUse, t_funThread3of3ForFork0NotInUse, Black: 453#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 446#(<= 1 ~global~0), 213#true, 131#L714-5true, Black: 198#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), 467#true, Black: 460#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 462#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 208#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 459#(= ~global~0 0), Black: 205#(= ~global~0 0), Black: 206#(= |t_funThread1of3ForFork0_#t~post5| 0), 226#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 478#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 470#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 471#(<= ~global~0 1), Black: 472#(<= |t_funThread2of3ForFork0_#t~post7| 1), 971#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 476#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 447#(<= 1 |t_funThread1of3ForFork0_#t~post7|), 434#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1))]) [2022-11-20 10:52:08,868 INFO L383 tUnfolder$Statistics]: this new event has 175 ancestors and is cut-off event [2022-11-20 10:52:08,868 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-20 10:52:08,868 INFO L386 tUnfolder$Statistics]: existing Event has 175 ancestors and is cut-off event [2022-11-20 10:52:08,868 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-20 10:52:08,972 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([818] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][412], [Black: 1021#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1011#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 989#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1005#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 995#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 997#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 987#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 965#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 993#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 961#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1007#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1023#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1001#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1013#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1017#(and (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 442#true, 112#L702-16true, Black: 427#(<= ~global~0 1), Black: 428#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 432#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 426#(= |t_funThread1of3ForFork0_#t~post5| 0), 1059#(<= 1 |t_funThread2of3ForFork0_#t~post7|), Black: 434#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 453#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 446#(<= 1 ~global~0), Black: 198#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), 213#true, 131#L714-5true, Black: 460#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 462#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 208#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 459#(= ~global~0 0), Black: 205#(= ~global~0 0), Black: 206#(= |t_funThread1of3ForFork0_#t~post5| 0), 423#true, 226#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 470#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 471#(<= ~global~0 1), Black: 472#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 467#true, 971#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 476#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 478#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1))]) [2022-11-20 10:52:08,972 INFO L383 tUnfolder$Statistics]: this new event has 175 ancestors and is cut-off event [2022-11-20 10:52:08,972 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-20 10:52:08,972 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-20 10:52:08,972 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-20 10:52:09,017 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([818] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][226], [1054#true, Black: 1021#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1011#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 989#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1005#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 995#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 997#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 987#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 965#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 993#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 961#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1007#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1023#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1001#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1013#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1017#(and (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 442#true, Black: 427#(<= ~global~0 1), Black: 428#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 432#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), Black: 426#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 434#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 453#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), 145#L702-17true, Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 446#(<= 1 ~global~0), Black: 198#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), 213#true, 131#L714-5true, Black: 460#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 462#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 208#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 459#(= ~global~0 0), Black: 205#(= ~global~0 0), Black: 206#(= |t_funThread1of3ForFork0_#t~post5| 0), 423#true, 226#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 478#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1)), Black: 470#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 472#(<= |t_funThread2of3ForFork0_#t~post7| 1), Black: 467#true, 971#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 476#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 471#(<= ~global~0 1)]) [2022-11-20 10:52:09,017 INFO L383 tUnfolder$Statistics]: this new event has 176 ancestors and is cut-off event [2022-11-20 10:52:09,017 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-20 10:52:09,017 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-20 10:52:09,018 INFO L386 tUnfolder$Statistics]: existing Event has 129 ancestors and is cut-off event [2022-11-20 10:52:09,092 INFO L130 PetriNetUnfolder]: 3623/26937 cut-off events. [2022-11-20 10:52:09,092 INFO L131 PetriNetUnfolder]: For 56888/58031 co-relation queries the response was YES. [2022-11-20 10:52:09,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54014 conditions, 26937 events. 3623/26937 cut-off events. For 56888/58031 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 394613 event pairs, 1522 based on Foata normal form. 436/24227 useless extension candidates. Maximal degree in co-relation 53051. Up to 4598 conditions per place. [2022-11-20 10:52:09,449 INFO L137 encePairwiseOnDemand]: 197/210 looper letters, 219 selfloop transitions, 63 changer transitions 0/525 dead transitions. [2022-11-20 10:52:09,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 525 transitions, 4584 flow [2022-11-20 10:52:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 10:52:09,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-20 10:52:09,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1524 transitions. [2022-11-20 10:52:09,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8063492063492064 [2022-11-20 10:52:09,454 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1524 transitions. [2022-11-20 10:52:09,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1524 transitions. [2022-11-20 10:52:09,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:09,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1524 transitions. [2022-11-20 10:52:09,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 169.33333333333334) internal successors, (1524), 9 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:09,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:09,463 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 210.0) internal successors, (2100), 10 states have internal predecessors, (2100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:09,463 INFO L175 Difference]: Start difference. First operand has 298 places, 451 transitions, 3427 flow. Second operand 9 states and 1524 transitions. [2022-11-20 10:52:09,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 525 transitions, 4584 flow [2022-11-20 10:52:09,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 525 transitions, 4132 flow, removed 178 selfloop flow, removed 9 redundant places. [2022-11-20 10:52:09,828 INFO L231 Difference]: Finished difference. Result has 298 places, 453 transitions, 3180 flow [2022-11-20 10:52:09,829 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3010, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=450, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3180, PETRI_PLACES=298, PETRI_TRANSITIONS=453} [2022-11-20 10:52:09,830 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 108 predicate places. [2022-11-20 10:52:09,830 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 453 transitions, 3180 flow [2022-11-20 10:52:09,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.83333333333334) internal successors, (947), 6 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:09,831 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:09,831 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 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] [2022-11-20 10:52:09,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 10:52:09,831 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:52:09,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:09,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1790880423, now seen corresponding path program 1 times [2022-11-20 10:52:09,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:09,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749438726] [2022-11-20 10:52:09,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:09,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:09,938 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 10:52:09,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:09,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749438726] [2022-11-20 10:52:09,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749438726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:09,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:09,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:52:09,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217904332] [2022-11-20 10:52:09,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:09,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:52:09,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:09,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:52:09,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:52:09,942 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 210 [2022-11-20 10:52:09,943 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 453 transitions, 3180 flow. Second operand has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:09,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:09,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 210 [2022-11-20 10:52:09,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:15,312 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([818] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_11| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of3ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_11|, t_funThread1of3ForFork0_thidvar0=v_t_funThread1of3ForFork0_thidvar0_4} AuxVars[] AssignedVars[][214], [Black: 1021#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1011#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 989#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1005#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 995#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 997#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 987#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 965#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 969#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 993#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 1068#true, Black: 961#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1007#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1023#(and (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483647) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 967#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< ~global~0 2147483646) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1001#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (< ~global~0 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1013#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (< |t_funThread1of3ForFork0_#t~post5| 2147483646) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 1017#(and (<= |~#__global_lock~0.base| 3) (<= |t_funThread2of3ForFork0_#t~post5| 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 959#(and (= (select (select |#pthreadsMutex| |~#mutex1~0.base|) |~#mutex1~0.offset|) 1) (<= |~#__global_lock~0.base| 3) (<= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), 442#true, Black: 1065#(and (<= 1 ~global~0) (<= 1 |t_funThread2of3ForFork0_#t~post7|)), 112#L702-16true, Black: 427#(<= ~global~0 1), Black: 428#(<= |t_funThread1of3ForFork0_#t~post7| 1), Black: 432#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (<= ~global~0 1)), 1059#(<= 1 |t_funThread2of3ForFork0_#t~post7|), Black: 426#(= |t_funThread1of3ForFork0_#t~post5| 0), Black: 434#(and (<= |t_funThread1of3ForFork0_#t~post7| 1) (<= ~global~0 1)), t_funThread1of3ForFork0NotInUse, t_funThread2of3ForFork0InUse, t_funThread3of3ForFork0NotInUse, Black: 453#(and (<= 1 ~global~0) (<= 1 |t_funThread1of3ForFork0_#t~post7|)), Black: 195#(= |ULTIMATE.start_main_~i~1#1| 0), Black: 446#(<= 1 ~global~0), 131#L714-5true, Black: 198#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), 213#true, Black: 460#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 462#(and (= ~global~0 0) (= |t_funThread2of3ForFork0_#t~post5| 0)), Black: 459#(= ~global~0 0), Black: 208#(and (= |t_funThread1of3ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 205#(= ~global~0 0), Black: 206#(= |t_funThread1of3ForFork0_#t~post5| 0), 423#true, 226#(<= 1 |ULTIMATE.start_main_~i~1#1|), Black: 470#(= |t_funThread2of3ForFork0_#t~post5| 0), Black: 471#(<= ~global~0 1), Black: 472#(<= |t_funThread2of3ForFork0_#t~post7| 1), 971#(and (<= |~#__global_lock~0.base| 3) (not (= |~#mutex1~0.base| |~#__global_lock~0.base|))), Black: 476#(and (<= ~global~0 1) (= |t_funThread2of3ForFork0_#t~post5| 0)), 478#(and (<= |t_funThread2of3ForFork0_#t~post7| 1) (<= ~global~0 1))]) [2022-11-20 10:52:15,312 INFO L383 tUnfolder$Statistics]: this new event has 175 ancestors and is cut-off event [2022-11-20 10:52:15,312 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-20 10:52:15,312 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-20 10:52:15,312 INFO L386 tUnfolder$Statistics]: existing Event has 128 ancestors and is cut-off event [2022-11-20 10:52:15,476 INFO L130 PetriNetUnfolder]: 3049/24608 cut-off events. [2022-11-20 10:52:15,477 INFO L131 PetriNetUnfolder]: For 49502/50735 co-relation queries the response was YES. [2022-11-20 10:52:15,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47979 conditions, 24608 events. 3049/24608 cut-off events. For 49502/50735 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 358523 event pairs, 1431 based on Foata normal form. 412/21960 useless extension candidates. Maximal degree in co-relation 47019. Up to 4592 conditions per place. [2022-11-20 10:52:15,790 INFO L137 encePairwiseOnDemand]: 202/210 looper letters, 201 selfloop transitions, 15 changer transitions 0/499 dead transitions. [2022-11-20 10:52:15,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 499 transitions, 4080 flow [2022-11-20 10:52:15,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:52:15,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:52:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 865 transitions. [2022-11-20 10:52:15,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8238095238095238 [2022-11-20 10:52:15,793 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 865 transitions. [2022-11-20 10:52:15,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 865 transitions. [2022-11-20 10:52:15,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:15,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 865 transitions. [2022-11-20 10:52:15,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:15,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:15,799 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:15,800 INFO L175 Difference]: Start difference. First operand has 298 places, 453 transitions, 3180 flow. Second operand 5 states and 865 transitions. [2022-11-20 10:52:15,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 499 transitions, 4080 flow [2022-11-20 10:52:16,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 499 transitions, 3992 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-11-20 10:52:16,009 INFO L231 Difference]: Finished difference. Result has 301 places, 457 transitions, 3196 flow [2022-11-20 10:52:16,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3105, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3196, PETRI_PLACES=301, PETRI_TRANSITIONS=457} [2022-11-20 10:52:16,010 INFO L288 CegarLoopForPetriNet]: 190 programPoint places, 111 predicate places. [2022-11-20 10:52:16,011 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 457 transitions, 3196 flow [2022-11-20 10:52:16,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 162.5) internal successors, (650), 4 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:16,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:16,011 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 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] [2022-11-20 10:52:16,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 10:52:16,012 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-20 10:52:16,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:16,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1225055226, now seen corresponding path program 1 times [2022-11-20 10:52:16,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:16,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370814069] [2022-11-20 10:52:16,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:16,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:52:16,038 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:52:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:52:16,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:52:16,062 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:52:16,062 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-11-20 10:52:16,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-11-20 10:52:16,062 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-11-20 10:52:16,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-11-20 10:52:16,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-11-20 10:52:16,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-11-20 10:52:16,063 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-11-20 10:52:16,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-11-20 10:52:16,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-11-20 10:52:16,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-11-20 10:52:16,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-11-20 10:52:16,064 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-11-20 10:52:16,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-11-20 10:52:16,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-11-20 10:52:16,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-11-20 10:52:16,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-11-20 10:52:16,065 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-11-20 10:52:16,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-11-20 10:52:16,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-11-20 10:52:16,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-11-20 10:52:16,066 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-11-20 10:52:16,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 10:52:16,067 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:16,068 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-20 10:52:16,068 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-20 10:52:16,101 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-20 10:52:16,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 248 transitions, 540 flow [2022-11-20 10:52:16,237 INFO L130 PetriNetUnfolder]: 82/665 cut-off events. [2022-11-20 10:52:16,238 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-20 10:52:16,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 665 events. 82/665 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2570 event pairs, 6 based on Foata normal form. 0/529 useless extension candidates. Maximal degree in co-relation 450. Up to 32 conditions per place. [2022-11-20 10:52:16,246 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 248 transitions, 540 flow [2022-11-20 10:52:16,253 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 248 transitions, 540 flow [2022-11-20 10:52:16,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:52:16,257 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;@59feb980, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:52:16,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-20 10:52:16,265 INFO L130 PetriNetUnfolder]: 3/71 cut-off events. [2022-11-20 10:52:16,265 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 10:52:16,265 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:16,266 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] [2022-11-20 10:52:16,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 10:52:16,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:16,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1113517258, now seen corresponding path program 1 times [2022-11-20 10:52:16,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:16,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045388472] [2022-11-20 10:52:16,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:16,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:16,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:16,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:16,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045388472] [2022-11-20 10:52:16,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045388472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:16,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:16,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:52:16,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485561407] [2022-11-20 10:52:16,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:16,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:52:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:52:16,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:52:16,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 248 [2022-11-20 10:52:16,331 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 248 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:16,331 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:16,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 248 [2022-11-20 10:52:16,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:16,528 INFO L130 PetriNetUnfolder]: 21/582 cut-off events. [2022-11-20 10:52:16,529 INFO L131 PetriNetUnfolder]: For 176/382 co-relation queries the response was YES. [2022-11-20 10:52:16,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 582 events. 21/582 cut-off events. For 176/382 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2331 event pairs, 6 based on Foata normal form. 629/1134 useless extension candidates. Maximal degree in co-relation 433. Up to 71 conditions per place. [2022-11-20 10:52:16,536 INFO L137 encePairwiseOnDemand]: 212/248 looper letters, 23 selfloop transitions, 4 changer transitions 0/225 dead transitions. [2022-11-20 10:52:16,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 225 transitions, 548 flow [2022-11-20 10:52:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:52:16,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:52:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1068 transitions. [2022-11-20 10:52:16,539 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8612903225806452 [2022-11-20 10:52:16,539 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1068 transitions. [2022-11-20 10:52:16,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1068 transitions. [2022-11-20 10:52:16,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:16,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1068 transitions. [2022-11-20 10:52:16,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 213.6) internal successors, (1068), 5 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:16,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:16,546 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:16,546 INFO L175 Difference]: Start difference. First operand has 223 places, 248 transitions, 540 flow. Second operand 5 states and 1068 transitions. [2022-11-20 10:52:16,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 225 transitions, 548 flow [2022-11-20 10:52:16,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 225 transitions, 548 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 10:52:16,552 INFO L231 Difference]: Finished difference. Result has 229 places, 221 transitions, 512 flow [2022-11-20 10:52:16,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=512, PETRI_PLACES=229, PETRI_TRANSITIONS=221} [2022-11-20 10:52:16,553 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 6 predicate places. [2022-11-20 10:52:16,553 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 221 transitions, 512 flow [2022-11-20 10:52:16,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:16,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:16,554 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] [2022-11-20 10:52:16,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 10:52:16,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 10:52:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:16,555 INFO L85 PathProgramCache]: Analyzing trace with hash 967903714, now seen corresponding path program 1 times [2022-11-20 10:52:16,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:16,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931778073] [2022-11-20 10:52:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:16,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:16,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:16,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:16,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931778073] [2022-11-20 10:52:16,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931778073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:16,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:16,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:52:16,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619871870] [2022-11-20 10:52:16,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:16,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:52:16,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:16,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:52:16,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:52:16,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 248 [2022-11-20 10:52:16,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 221 transitions, 512 flow. Second operand has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:16,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:16,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 248 [2022-11-20 10:52:16,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:25,865 INFO L130 PetriNetUnfolder]: 15407/55174 cut-off events. [2022-11-20 10:52:25,865 INFO L131 PetriNetUnfolder]: For 9909/9909 co-relation queries the response was YES. [2022-11-20 10:52:26,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80601 conditions, 55174 events. 15407/55174 cut-off events. For 9909/9909 co-relation queries the response was YES. Maximal size of possible extension queue 1664. Compared 778756 event pairs, 10404 based on Foata normal form. 0/47899 useless extension candidates. Maximal degree in co-relation 80525. Up to 15266 conditions per place. [2022-11-20 10:52:26,603 INFO L137 encePairwiseOnDemand]: 239/248 looper letters, 68 selfloop transitions, 10 changer transitions 0/268 dead transitions. [2022-11-20 10:52:26,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 268 transitions, 834 flow [2022-11-20 10:52:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:52:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:52:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1017 transitions. [2022-11-20 10:52:26,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8201612903225807 [2022-11-20 10:52:26,608 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1017 transitions. [2022-11-20 10:52:26,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1017 transitions. [2022-11-20 10:52:26,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:26,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1017 transitions. [2022-11-20 10:52:26,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.4) internal successors, (1017), 5 states have internal predecessors, (1017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:26,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:26,614 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:26,614 INFO L175 Difference]: Start difference. First operand has 229 places, 221 transitions, 512 flow. Second operand 5 states and 1017 transitions. [2022-11-20 10:52:26,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 268 transitions, 834 flow [2022-11-20 10:52:26,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 268 transitions, 832 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:52:26,627 INFO L231 Difference]: Finished difference. Result has 235 places, 230 transitions, 589 flow [2022-11-20 10:52:26,628 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=589, PETRI_PLACES=235, PETRI_TRANSITIONS=230} [2022-11-20 10:52:26,629 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 12 predicate places. [2022-11-20 10:52:26,629 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 230 transitions, 589 flow [2022-11-20 10:52:26,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:26,629 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:26,630 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:26,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 10:52:26,630 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 10:52:26,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:26,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1418418791, now seen corresponding path program 1 times [2022-11-20 10:52:26,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:26,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210771559] [2022-11-20 10:52:26,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:26,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:52:26,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:26,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210771559] [2022-11-20 10:52:26,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210771559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:52:26,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:52:26,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:52:26,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687577611] [2022-11-20 10:52:26,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:52:26,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:52:26,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:52:26,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:52:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:52:26,699 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 248 [2022-11-20 10:52:26,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 230 transitions, 589 flow. Second operand has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:26,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 10:52:26,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 248 [2022-11-20 10:52:26,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 10:52:27,369 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1103] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][135], [32#L702-6true, Black: 231#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), Black: 229#(= |ULTIMATE.start_main_#t~post9#1| 0), Black: 228#(= |ULTIMATE.start_main_~i~1#1| 0), 246#true, Black: 241#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 238#(= ~global~0 0), Black: 239#(= |t_funThread1of4ForFork0_#t~post5| 0), 236#true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0InUse, t_funThread3of4ForFork0NotInUse, 188#L714-5true, t_funThread4of4ForFork0NotInUse]) [2022-11-20 10:52:27,369 INFO L383 tUnfolder$Statistics]: this new event has 213 ancestors and is cut-off event [2022-11-20 10:52:27,370 INFO L386 tUnfolder$Statistics]: existing Event has 166 ancestors and is cut-off event [2022-11-20 10:52:27,370 INFO L386 tUnfolder$Statistics]: existing Event has 119 ancestors and is cut-off event [2022-11-20 10:52:27,370 INFO L386 tUnfolder$Statistics]: existing Event has 213 ancestors and is cut-off event [2022-11-20 10:52:27,396 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([1103] t_funEXIT-->L714-5: Formula: (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem15#1_18| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_t_funThread1of4ForFork0_thidvar0_4) InVars {ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} OutVars{ULTIMATE.start_main_#t~mem15#1=|v_ULTIMATE.start_main_#t~mem15#1_18|, t_funThread1of4ForFork0_thidvar0=v_t_funThread1of4ForFork0_thidvar0_4} AuxVars[] AssignedVars[][135], [Black: 231#(and (= |ULTIMATE.start_main_~i~1#1| 0) (= |ULTIMATE.start_main_#t~post9#1| 0)), Black: 229#(= |ULTIMATE.start_main_#t~post9#1| 0), Black: 228#(= |ULTIMATE.start_main_~i~1#1| 0), 246#true, Black: 241#(and (= |t_funThread1of4ForFork0_#t~post5| 0) (= ~global~0 0)), Black: 238#(= ~global~0 0), Black: 239#(= |t_funThread1of4ForFork0_#t~post5| 0), 236#true, t_funThread1of4ForFork0NotInUse, t_funThread2of4ForFork0NotInUse, t_funThread3of4ForFork0NotInUse, 188#L714-5true, t_funThread4of4ForFork0NotInUse]) [2022-11-20 10:52:27,396 INFO L383 tUnfolder$Statistics]: this new event has 238 ancestors and is cut-off event [2022-11-20 10:52:27,396 INFO L386 tUnfolder$Statistics]: existing Event has 144 ancestors and is cut-off event [2022-11-20 10:52:27,396 INFO L386 tUnfolder$Statistics]: existing Event has 144 ancestors and is cut-off event [2022-11-20 10:52:27,396 INFO L386 tUnfolder$Statistics]: existing Event has 97 ancestors and is cut-off event [2022-11-20 10:52:27,400 INFO L130 PetriNetUnfolder]: 162/2498 cut-off events. [2022-11-20 10:52:27,400 INFO L131 PetriNetUnfolder]: For 1035/2559 co-relation queries the response was YES. [2022-11-20 10:52:27,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3168 conditions, 2498 events. 162/2498 cut-off events. For 1035/2559 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 20659 event pairs, 59 based on Foata normal form. 99/2220 useless extension candidates. Maximal degree in co-relation 2424. Up to 194 conditions per place. [2022-11-20 10:52:27,461 INFO L137 encePairwiseOnDemand]: 242/248 looper letters, 15 selfloop transitions, 8 changer transitions 0/230 dead transitions. [2022-11-20 10:52:27,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 230 transitions, 633 flow [2022-11-20 10:52:27,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:52:27,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 10:52:27,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1011 transitions. [2022-11-20 10:52:27,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8153225806451613 [2022-11-20 10:52:27,464 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1011 transitions. [2022-11-20 10:52:27,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1011 transitions. [2022-11-20 10:52:27,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 10:52:27,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1011 transitions. [2022-11-20 10:52:27,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,469 INFO L175 Difference]: Start difference. First operand has 235 places, 230 transitions, 589 flow. Second operand 5 states and 1011 transitions. [2022-11-20 10:52:27,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 230 transitions, 633 flow [2022-11-20 10:52:27,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 230 transitions, 628 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 10:52:27,474 INFO L231 Difference]: Finished difference. Result has 238 places, 230 transitions, 604 flow [2022-11-20 10:52:27,475 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=604, PETRI_PLACES=238, PETRI_TRANSITIONS=230} [2022-11-20 10:52:27,476 INFO L288 CegarLoopForPetriNet]: 223 programPoint places, 15 predicate places. [2022-11-20 10:52:27,476 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 230 transitions, 604 flow [2022-11-20 10:52:27,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:52:27,477 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 10:52:27,477 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:52:27,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 10:52:27,477 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-20 10:52:27,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:52:27,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1021310498, now seen corresponding path program 1 times [2022-11-20 10:52:27,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:52:27,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672837042] [2022-11-20 10:52:27,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:27,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:52:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:52:27,560 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:52:27,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:52:27,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672837042] [2022-11-20 10:52:27,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672837042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 10:52:27,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880210117] [2022-11-20 10:52:27,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:52:27,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 10:52:27,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:52:27,563 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0dcad50d-70d6-432f-abb1-cbbaa97d7d96/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)