./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b71c523f20411078d17c9943b891d34ddfc00131917c4009fb579cdffacef23c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:39:27,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:39:27,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:39:27,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:39:27,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:39:27,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:39:27,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:39:27,561 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:39:27,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:39:27,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:39:27,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:39:27,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:39:27,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:39:27,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:39:27,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:39:27,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:39:27,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:39:27,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:39:27,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:39:27,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:39:27,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:39:27,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:39:27,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:39:27,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:39:27,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:39:27,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:39:27,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:39:27,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:39:27,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:39:27,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:39:27,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:39:27,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:39:27,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:39:27,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:39:27,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:39:27,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:39:27,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:39:27,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:39:27,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:39:27,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:39:27,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:39:27,619 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:39:27,661 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:39:27,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:39:27,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:39:27,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:39:27,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:39:27,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:39:27,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:39:27,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:39:27,667 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:39:27,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:39:27,668 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:39:27,669 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:39:27,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:39:27,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:39:27,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:39:27,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:39:27,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:39:27,670 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:39:27,670 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:39:27,670 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:39:27,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:39:27,671 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:39:27,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:39:27,671 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:39:27,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:39:27,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:39:27,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:39:27,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:39:27,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:39:27,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:39:27,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:39:27,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:39:27,674 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:39:27,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:39:27,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:39:27,674 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_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b71c523f20411078d17c9943b891d34ddfc00131917c4009fb579cdffacef23c [2022-11-18 19:39:27,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:39:28,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:39:28,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:39:28,018 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:39:28,027 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:39:28,028 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i [2022-11-18 19:39:28,104 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/data/8f628f2df/cdba6d7287e544bc8e578adfb8f6454c/FLAG8fe81c64f [2022-11-18 19:39:28,679 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:39:28,680 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/sv-benchmarks/c/goblint-regression/04-mutex_46-escape_nr.i [2022-11-18 19:39:28,699 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/data/8f628f2df/cdba6d7287e544bc8e578adfb8f6454c/FLAG8fe81c64f [2022-11-18 19:39:28,954 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/data/8f628f2df/cdba6d7287e544bc8e578adfb8f6454c [2022-11-18 19:39:28,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:39:28,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:39:28,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:39:28,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:39:28,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:39:28,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:39:28" (1/1) ... [2022-11-18 19:39:28,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115ead79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:28, skipping insertion in model container [2022-11-18 19:39:28,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:39:28" (1/1) ... [2022-11-18 19:39:28,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:39:29,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:39:29,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:39:29,483 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:39:29,550 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:39:29,615 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:39:29,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29 WrapperNode [2022-11-18 19:39:29,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:39:29,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:39:29,618 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:39:29,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:39:29,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (1/1) ... [2022-11-18 19:39:29,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (1/1) ... [2022-11-18 19:39:29,688 INFO L138 Inliner]: procedures = 263, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 64 [2022-11-18 19:39:29,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:39:29,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:39:29,690 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:39:29,690 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:39:29,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (1/1) ... [2022-11-18 19:39:29,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (1/1) ... [2022-11-18 19:39:29,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (1/1) ... [2022-11-18 19:39:29,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (1/1) ... [2022-11-18 19:39:29,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (1/1) ... [2022-11-18 19:39:29,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (1/1) ... [2022-11-18 19:39:29,734 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (1/1) ... [2022-11-18 19:39:29,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (1/1) ... [2022-11-18 19:39:29,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:39:29,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:39:29,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:39:29,742 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:39:29,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (1/1) ... [2022-11-18 19:39:29,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:39:29,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:29,780 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:39:29,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:39:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:39:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:39:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:39:29,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:39:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:39:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:39:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-11-18 19:39:29,824 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-11-18 19:39:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:39:29,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:39:29,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:39:29,826 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:39:30,035 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:39:30,037 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:39:30,211 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:39:30,218 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:39:30,220 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 19:39:30,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:30 BoogieIcfgContainer [2022-11-18 19:39:30,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:39:30,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:39:30,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:39:30,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:39:30,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:39:28" (1/3) ... [2022-11-18 19:39:30,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75855ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:30, skipping insertion in model container [2022-11-18 19:39:30,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:29" (2/3) ... [2022-11-18 19:39:30,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75855ad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:30, skipping insertion in model container [2022-11-18 19:39:30,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:30" (3/3) ... [2022-11-18 19:39:30,237 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_46-escape_nr.i [2022-11-18 19:39:30,246 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:39:30,256 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:39:30,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-18 19:39:30,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:39:30,364 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-11-18 19:39:30,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 85 transitions, 178 flow [2022-11-18 19:39:30,457 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2022-11-18 19:39:30,458 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:39:30,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 84 events. 1/84 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 6. Up to 2 conditions per place. [2022-11-18 19:39:30,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 85 transitions, 178 flow [2022-11-18 19:39:30,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 67 transitions, 137 flow [2022-11-18 19:39:30,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:39:30,484 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;@393b264a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:39:30,484 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-11-18 19:39:30,502 INFO L130 PetriNetUnfolder]: 0/48 cut-off events. [2022-11-18 19:39:30,502 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:39:30,502 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:30,503 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] [2022-11-18 19:39:30,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:30,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:30,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2001792427, now seen corresponding path program 1 times [2022-11-18 19:39:30,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:30,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651047584] [2022-11-18 19:39:30,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:30,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:31,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:31,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:31,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651047584] [2022-11-18 19:39:31,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651047584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:31,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:31,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:39:31,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250292900] [2022-11-18 19:39:31,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:31,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:39:31,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:31,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:39:31,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:39:31,513 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2022-11-18 19:39:31,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 137 flow. Second operand has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:31,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:31,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2022-11-18 19:39:31,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:31,857 INFO L130 PetriNetUnfolder]: 18/142 cut-off events. [2022-11-18 19:39:31,857 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:39:31,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 142 events. 18/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 482 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 161. Up to 21 conditions per place. [2022-11-18 19:39:31,860 INFO L137 encePairwiseOnDemand]: 72/85 looper letters, 27 selfloop transitions, 15 changer transitions 9/90 dead transitions. [2022-11-18 19:39:31,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 90 transitions, 285 flow [2022-11-18 19:39:31,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:39:31,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 19:39:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 605 transitions. [2022-11-18 19:39:31,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5931372549019608 [2022-11-18 19:39:31,877 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 605 transitions. [2022-11-18 19:39:31,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 605 transitions. [2022-11-18 19:39:31,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:31,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 605 transitions. [2022-11-18 19:39:31,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 50.416666666666664) internal successors, (605), 12 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:31,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:31,896 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:31,897 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 137 flow. Second operand 12 states and 605 transitions. [2022-11-18 19:39:31,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 90 transitions, 285 flow [2022-11-18 19:39:31,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 90 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:39:31,904 INFO L231 Difference]: Finished difference. Result has 85 places, 73 transitions, 203 flow [2022-11-18 19:39:31,906 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=203, PETRI_PLACES=85, PETRI_TRANSITIONS=73} [2022-11-18 19:39:31,910 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 14 predicate places. [2022-11-18 19:39:31,911 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 73 transitions, 203 flow [2022-11-18 19:39:31,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 48.111111111111114) internal successors, (433), 9 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:31,911 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:31,912 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] [2022-11-18 19:39:31,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:39:31,912 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:31,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:31,913 INFO L85 PathProgramCache]: Analyzing trace with hash 214636834, now seen corresponding path program 1 times [2022-11-18 19:39:31,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:31,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221223569] [2022-11-18 19:39:31,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:31,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:32,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:32,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:32,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221223569] [2022-11-18 19:39:32,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221223569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:32,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:32,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 19:39:32,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911035571] [2022-11-18 19:39:32,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:32,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:39:32,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:32,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:39:32,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:39:32,289 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 85 [2022-11-18 19:39:32,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 73 transitions, 203 flow. Second operand has 12 states, 12 states have (on average 45.75) internal successors, (549), 12 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:32,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:32,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 85 [2022-11-18 19:39:32,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:32,777 INFO L130 PetriNetUnfolder]: 28/176 cut-off events. [2022-11-18 19:39:32,777 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-11-18 19:39:32,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363 conditions, 176 events. 28/176 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 704 event pairs, 5 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 296. Up to 32 conditions per place. [2022-11-18 19:39:32,780 INFO L137 encePairwiseOnDemand]: 69/85 looper letters, 33 selfloop transitions, 22 changer transitions 2/97 dead transitions. [2022-11-18 19:39:32,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 97 transitions, 397 flow [2022-11-18 19:39:32,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:39:32,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 19:39:32,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 717 transitions. [2022-11-18 19:39:32,783 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623529411764706 [2022-11-18 19:39:32,783 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 717 transitions. [2022-11-18 19:39:32,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 717 transitions. [2022-11-18 19:39:32,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:32,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 717 transitions. [2022-11-18 19:39:32,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 47.8) internal successors, (717), 15 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:32,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 85.0) internal successors, (1360), 16 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:32,791 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 85.0) internal successors, (1360), 16 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:32,791 INFO L175 Difference]: Start difference. First operand has 85 places, 73 transitions, 203 flow. Second operand 15 states and 717 transitions. [2022-11-18 19:39:32,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 97 transitions, 397 flow [2022-11-18 19:39:32,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 379 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:39:32,796 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 306 flow [2022-11-18 19:39:32,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=306, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2022-11-18 19:39:32,797 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 28 predicate places. [2022-11-18 19:39:32,797 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 306 flow [2022-11-18 19:39:32,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.75) internal successors, (549), 12 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:32,798 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:32,798 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] [2022-11-18 19:39:32,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:39:32,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:32,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:32,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1926022958, now seen corresponding path program 1 times [2022-11-18 19:39:32,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:32,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090576380] [2022-11-18 19:39:32,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:32,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:33,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:33,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:33,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090576380] [2022-11-18 19:39:33,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090576380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:33,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:33,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:39:33,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652992617] [2022-11-18 19:39:33,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:33,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:39:33,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:33,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:39:33,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:39:33,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 85 [2022-11-18 19:39:33,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 306 flow. Second operand has 9 states, 9 states have (on average 50.22222222222222) internal successors, (452), 9 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:33,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:33,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 85 [2022-11-18 19:39:33,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:33,294 INFO L130 PetriNetUnfolder]: 13/141 cut-off events. [2022-11-18 19:39:33,294 INFO L131 PetriNetUnfolder]: For 84/88 co-relation queries the response was YES. [2022-11-18 19:39:33,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 141 events. 13/141 cut-off events. For 84/88 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 481 event pairs, 0 based on Foata normal form. 7/148 useless extension candidates. Maximal degree in co-relation 255. Up to 19 conditions per place. [2022-11-18 19:39:33,296 INFO L137 encePairwiseOnDemand]: 72/85 looper letters, 29 selfloop transitions, 11 changer transitions 6/90 dead transitions. [2022-11-18 19:39:33,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 90 transitions, 420 flow [2022-11-18 19:39:33,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:39:33,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-18 19:39:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 666 transitions. [2022-11-18 19:39:33,299 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6027149321266968 [2022-11-18 19:39:33,299 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 666 transitions. [2022-11-18 19:39:33,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 666 transitions. [2022-11-18 19:39:33,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:33,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 666 transitions. [2022-11-18 19:39:33,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 51.23076923076923) internal successors, (666), 13 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:33,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:33,304 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 85.0) internal successors, (1190), 14 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:33,304 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 306 flow. Second operand 13 states and 666 transitions. [2022-11-18 19:39:33,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 90 transitions, 420 flow [2022-11-18 19:39:33,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 90 transitions, 397 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-11-18 19:39:33,309 INFO L231 Difference]: Finished difference. Result has 104 places, 79 transitions, 288 flow [2022-11-18 19:39:33,309 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=288, PETRI_PLACES=104, PETRI_TRANSITIONS=79} [2022-11-18 19:39:33,310 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 33 predicate places. [2022-11-18 19:39:33,310 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 79 transitions, 288 flow [2022-11-18 19:39:33,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 50.22222222222222) internal successors, (452), 9 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:33,311 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:33,311 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] [2022-11-18 19:39:33,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:39:33,311 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:33,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:33,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1936192526, now seen corresponding path program 1 times [2022-11-18 19:39:33,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:33,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632900269] [2022-11-18 19:39:33,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:33,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:33,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:33,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:33,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632900269] [2022-11-18 19:39:33,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632900269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:33,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:33,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 19:39:33,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044117844] [2022-11-18 19:39:33,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:33,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:39:33,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:33,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:39:33,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:39:33,586 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2022-11-18 19:39:33,587 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 79 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 47.833333333333336) internal successors, (574), 12 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:33,587 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:33,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2022-11-18 19:39:33,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:34,026 INFO L130 PetriNetUnfolder]: 24/150 cut-off events. [2022-11-18 19:39:34,027 INFO L131 PetriNetUnfolder]: For 122/124 co-relation queries the response was YES. [2022-11-18 19:39:34,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 150 events. 24/150 cut-off events. For 122/124 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 509 event pairs, 4 based on Foata normal form. 6/155 useless extension candidates. Maximal degree in co-relation 299. Up to 23 conditions per place. [2022-11-18 19:39:34,032 INFO L137 encePairwiseOnDemand]: 69/85 looper letters, 27 selfloop transitions, 16 changer transitions 10/91 dead transitions. [2022-11-18 19:39:34,032 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 91 transitions, 440 flow [2022-11-18 19:39:34,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:39:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-11-18 19:39:34,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 789 transitions. [2022-11-18 19:39:34,035 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5801470588235295 [2022-11-18 19:39:34,036 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 789 transitions. [2022-11-18 19:39:34,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 789 transitions. [2022-11-18 19:39:34,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:34,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 789 transitions. [2022-11-18 19:39:34,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 49.3125) internal successors, (789), 16 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) [2022-11-18 19:39:34,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 85.0) internal successors, (1445), 17 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,046 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 85.0) internal successors, (1445), 17 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,047 INFO L175 Difference]: Start difference. First operand has 104 places, 79 transitions, 288 flow. Second operand 16 states and 789 transitions. [2022-11-18 19:39:34,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 91 transitions, 440 flow [2022-11-18 19:39:34,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 91 transitions, 386 flow, removed 2 selfloop flow, removed 12 redundant places. [2022-11-18 19:39:34,054 INFO L231 Difference]: Finished difference. Result has 105 places, 75 transitions, 265 flow [2022-11-18 19:39:34,054 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=265, PETRI_PLACES=105, PETRI_TRANSITIONS=75} [2022-11-18 19:39:34,055 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 34 predicate places. [2022-11-18 19:39:34,056 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 75 transitions, 265 flow [2022-11-18 19:39:34,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 47.833333333333336) internal successors, (574), 12 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:34,057 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] [2022-11-18 19:39:34,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:39:34,065 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:34,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:34,066 INFO L85 PathProgramCache]: Analyzing trace with hash -761037377, now seen corresponding path program 1 times [2022-11-18 19:39:34,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:34,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121712045] [2022-11-18 19:39:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:34,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:34,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:34,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:34,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121712045] [2022-11-18 19:39:34,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121712045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:34,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:34,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:34,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060208105] [2022-11-18 19:39:34,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:34,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:34,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:34,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:34,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:34,150 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 85 [2022-11-18 19:39:34,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 75 transitions, 265 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:34,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 85 [2022-11-18 19:39:34,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:34,177 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-18 19:39:34,178 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2022-11-18 19:39:34,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 89 events. 2/89 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 134. Up to 12 conditions per place. [2022-11-18 19:39:34,178 INFO L137 encePairwiseOnDemand]: 81/85 looper letters, 7 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2022-11-18 19:39:34,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 75 transitions, 287 flow [2022-11-18 19:39:34,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:34,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:39:34,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2022-11-18 19:39:34,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9098039215686274 [2022-11-18 19:39:34,180 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2022-11-18 19:39:34,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2022-11-18 19:39:34,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:34,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2022-11-18 19:39:34,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,183 INFO L175 Difference]: Start difference. First operand has 105 places, 75 transitions, 265 flow. Second operand 3 states and 232 transitions. [2022-11-18 19:39:34,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 75 transitions, 287 flow [2022-11-18 19:39:34,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 75 transitions, 252 flow, removed 2 selfloop flow, removed 14 redundant places. [2022-11-18 19:39:34,187 INFO L231 Difference]: Finished difference. Result has 90 places, 75 transitions, 238 flow [2022-11-18 19:39:34,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=90, PETRI_TRANSITIONS=75} [2022-11-18 19:39:34,190 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 19 predicate places. [2022-11-18 19:39:34,190 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 75 transitions, 238 flow [2022-11-18 19:39:34,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,190 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:34,193 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] [2022-11-18 19:39:34,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:39:34,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:34,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:34,197 INFO L85 PathProgramCache]: Analyzing trace with hash 634451854, now seen corresponding path program 1 times [2022-11-18 19:39:34,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:34,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982161974] [2022-11-18 19:39:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:34,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:34,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:34,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982161974] [2022-11-18 19:39:34,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982161974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:34,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:34,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:39:34,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016325666] [2022-11-18 19:39:34,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:34,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:39:34,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:34,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:39:34,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:39:34,669 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-18 19:39:34,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 75 transitions, 238 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:34,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-18 19:39:34,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:35,452 INFO L130 PetriNetUnfolder]: 21/120 cut-off events. [2022-11-18 19:39:35,452 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-18 19:39:35,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 297 conditions, 120 events. 21/120 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 179 event pairs, 5 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 226. Up to 27 conditions per place. [2022-11-18 19:39:35,453 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 32 selfloop transitions, 30 changer transitions 0/92 dead transitions. [2022-11-18 19:39:35,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 92 transitions, 429 flow [2022-11-18 19:39:35,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:39:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-18 19:39:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 988 transitions. [2022-11-18 19:39:35,460 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46494117647058825 [2022-11-18 19:39:35,460 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 988 transitions. [2022-11-18 19:39:35,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 988 transitions. [2022-11-18 19:39:35,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:35,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 988 transitions. [2022-11-18 19:39:35,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 39.52) internal successors, (988), 25 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) [2022-11-18 19:39:35,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:35,468 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:35,468 INFO L175 Difference]: Start difference. First operand has 90 places, 75 transitions, 238 flow. Second operand 25 states and 988 transitions. [2022-11-18 19:39:35,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 92 transitions, 429 flow [2022-11-18 19:39:35,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 92 transitions, 422 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:39:35,477 INFO L231 Difference]: Finished difference. Result has 110 places, 82 transitions, 326 flow [2022-11-18 19:39:35,477 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=326, PETRI_PLACES=110, PETRI_TRANSITIONS=82} [2022-11-18 19:39:35,480 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 39 predicate places. [2022-11-18 19:39:35,480 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 82 transitions, 326 flow [2022-11-18 19:39:35,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:35,481 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:35,481 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] [2022-11-18 19:39:35,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:39:35,482 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:35,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:35,482 INFO L85 PathProgramCache]: Analyzing trace with hash -605312134, now seen corresponding path program 1 times [2022-11-18 19:39:35,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:35,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165000129] [2022-11-18 19:39:35,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:35,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:35,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:35,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:35,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165000129] [2022-11-18 19:39:35,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165000129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:35,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:35,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:39:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577441994] [2022-11-18 19:39:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:35,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:39:35,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:35,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:39:35,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:39:35,925 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-18 19:39:35,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 82 transitions, 326 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:35,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:35,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-18 19:39:35,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:36,521 INFO L130 PetriNetUnfolder]: 24/142 cut-off events. [2022-11-18 19:39:36,521 INFO L131 PetriNetUnfolder]: For 87/93 co-relation queries the response was YES. [2022-11-18 19:39:36,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 142 events. 24/142 cut-off events. For 87/93 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 309 event pairs, 3 based on Foata normal form. 8/148 useless extension candidates. Maximal degree in co-relation 308. Up to 36 conditions per place. [2022-11-18 19:39:36,522 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 44 selfloop transitions, 28 changer transitions 0/102 dead transitions. [2022-11-18 19:39:36,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 102 transitions, 536 flow [2022-11-18 19:39:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:39:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 19:39:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 846 transitions. [2022-11-18 19:39:36,525 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47394957983193275 [2022-11-18 19:39:36,526 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 846 transitions. [2022-11-18 19:39:36,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 846 transitions. [2022-11-18 19:39:36,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:36,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 846 transitions. [2022-11-18 19:39:36,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 40.285714285714285) internal successors, (846), 21 states have internal predecessors, (846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:36,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 85.0) internal successors, (1870), 22 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:36,533 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 85.0) internal successors, (1870), 22 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:36,533 INFO L175 Difference]: Start difference. First operand has 110 places, 82 transitions, 326 flow. Second operand 21 states and 846 transitions. [2022-11-18 19:39:36,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 102 transitions, 536 flow [2022-11-18 19:39:36,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 102 transitions, 457 flow, removed 2 selfloop flow, removed 19 redundant places. [2022-11-18 19:39:36,537 INFO L231 Difference]: Finished difference. Result has 118 places, 89 transitions, 368 flow [2022-11-18 19:39:36,537 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=368, PETRI_PLACES=118, PETRI_TRANSITIONS=89} [2022-11-18 19:39:36,538 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 47 predicate places. [2022-11-18 19:39:36,538 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 89 transitions, 368 flow [2022-11-18 19:39:36,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:36,539 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:36,539 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] [2022-11-18 19:39:36,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:39:36,539 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:36,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:36,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1551421468, now seen corresponding path program 2 times [2022-11-18 19:39:36,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:36,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869563779] [2022-11-18 19:39:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:36,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:36,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:36,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:36,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869563779] [2022-11-18 19:39:36,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869563779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:36,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:36,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:39:36,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547291327] [2022-11-18 19:39:36,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:36,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:39:36,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:39:36,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:39:36,970 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-18 19:39:36,971 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 89 transitions, 368 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:36,971 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:36,971 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-18 19:39:36,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:37,826 INFO L130 PetriNetUnfolder]: 33/184 cut-off events. [2022-11-18 19:39:37,826 INFO L131 PetriNetUnfolder]: For 155/161 co-relation queries the response was YES. [2022-11-18 19:39:37,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542 conditions, 184 events. 33/184 cut-off events. For 155/161 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 551 event pairs, 4 based on Foata normal form. 8/189 useless extension candidates. Maximal degree in co-relation 488. Up to 38 conditions per place. [2022-11-18 19:39:37,828 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 48 selfloop transitions, 48 changer transitions 0/126 dead transitions. [2022-11-18 19:39:37,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 126 transitions, 722 flow [2022-11-18 19:39:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 19:39:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-18 19:39:37,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1196 transitions. [2022-11-18 19:39:37,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46901960784313723 [2022-11-18 19:39:37,832 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 1196 transitions. [2022-11-18 19:39:37,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 1196 transitions. [2022-11-18 19:39:37,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:37,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 1196 transitions. [2022-11-18 19:39:37,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 39.86666666666667) internal successors, (1196), 30 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:37,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 85.0) internal successors, (2635), 31 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:37,841 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 85.0) internal successors, (2635), 31 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:37,841 INFO L175 Difference]: Start difference. First operand has 118 places, 89 transitions, 368 flow. Second operand 30 states and 1196 transitions. [2022-11-18 19:39:37,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 126 transitions, 722 flow [2022-11-18 19:39:37,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 126 transitions, 684 flow, removed 2 selfloop flow, removed 11 redundant places. [2022-11-18 19:39:37,846 INFO L231 Difference]: Finished difference. Result has 142 places, 109 transitions, 586 flow [2022-11-18 19:39:37,846 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=586, PETRI_PLACES=142, PETRI_TRANSITIONS=109} [2022-11-18 19:39:37,847 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 71 predicate places. [2022-11-18 19:39:37,847 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 109 transitions, 586 flow [2022-11-18 19:39:37,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:37,848 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:37,848 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] [2022-11-18 19:39:37,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:39:37,848 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:37,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1744014112, now seen corresponding path program 3 times [2022-11-18 19:39:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:37,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664034256] [2022-11-18 19:39:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:38,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:38,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:38,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664034256] [2022-11-18 19:39:38,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664034256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:38,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:38,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:39:38,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015149500] [2022-11-18 19:39:38,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:38,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:39:38,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:38,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:39:38,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:39:38,250 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-18 19:39:38,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 109 transitions, 586 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:38,251 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:38,251 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-18 19:39:38,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:38,950 INFO L130 PetriNetUnfolder]: 37/203 cut-off events. [2022-11-18 19:39:38,950 INFO L131 PetriNetUnfolder]: For 279/285 co-relation queries the response was YES. [2022-11-18 19:39:38,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 203 events. 37/203 cut-off events. For 279/285 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 671 event pairs, 3 based on Foata normal form. 8/207 useless extension candidates. Maximal degree in co-relation 616. Up to 36 conditions per place. [2022-11-18 19:39:38,952 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 48 selfloop transitions, 51 changer transitions 0/129 dead transitions. [2022-11-18 19:39:38,952 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 129 transitions, 856 flow [2022-11-18 19:39:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 19:39:38,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 19:39:38,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1043 transitions. [2022-11-18 19:39:38,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47194570135746605 [2022-11-18 19:39:38,955 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1043 transitions. [2022-11-18 19:39:38,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1043 transitions. [2022-11-18 19:39:38,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:38,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1043 transitions. [2022-11-18 19:39:38,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 40.11538461538461) internal successors, (1043), 26 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:38,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 85.0) internal successors, (2295), 27 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:38,963 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 85.0) internal successors, (2295), 27 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:38,963 INFO L175 Difference]: Start difference. First operand has 142 places, 109 transitions, 586 flow. Second operand 26 states and 1043 transitions. [2022-11-18 19:39:38,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 129 transitions, 856 flow [2022-11-18 19:39:38,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 129 transitions, 781 flow, removed 20 selfloop flow, removed 12 redundant places. [2022-11-18 19:39:38,970 INFO L231 Difference]: Finished difference. Result has 160 places, 113 transitions, 678 flow [2022-11-18 19:39:38,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=518, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=678, PETRI_PLACES=160, PETRI_TRANSITIONS=113} [2022-11-18 19:39:38,971 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 89 predicate places. [2022-11-18 19:39:38,971 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 113 transitions, 678 flow [2022-11-18 19:39:38,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:38,972 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:38,972 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] [2022-11-18 19:39:38,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:39:38,972 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:38,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1209552896, now seen corresponding path program 4 times [2022-11-18 19:39:38,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:38,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399672766] [2022-11-18 19:39:38,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:38,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:39,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:39,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:39,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399672766] [2022-11-18 19:39:39,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399672766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:39,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:39,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:39:39,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620331236] [2022-11-18 19:39:39,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:39,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:39:39,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:39,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:39:39,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:39:39,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-18 19:39:39,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 113 transitions, 678 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:39,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:39,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-18 19:39:39,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:40,292 INFO L130 PetriNetUnfolder]: 45/242 cut-off events. [2022-11-18 19:39:40,292 INFO L131 PetriNetUnfolder]: For 518/524 co-relation queries the response was YES. [2022-11-18 19:39:40,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 242 events. 45/242 cut-off events. For 518/524 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 949 event pairs, 12 based on Foata normal form. 2/239 useless extension candidates. Maximal degree in co-relation 764. Up to 68 conditions per place. [2022-11-18 19:39:40,295 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 67 selfloop transitions, 53 changer transitions 0/150 dead transitions. [2022-11-18 19:39:40,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 150 transitions, 1108 flow [2022-11-18 19:39:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 19:39:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 19:39:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 1161 transitions. [2022-11-18 19:39:40,302 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47099391480730224 [2022-11-18 19:39:40,302 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 1161 transitions. [2022-11-18 19:39:40,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 1161 transitions. [2022-11-18 19:39:40,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:40,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 1161 transitions. [2022-11-18 19:39:40,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 40.03448275862069) internal successors, (1161), 29 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:40,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 85.0) internal successors, (2550), 30 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:40,312 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 85.0) internal successors, (2550), 30 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:40,312 INFO L175 Difference]: Start difference. First operand has 160 places, 113 transitions, 678 flow. Second operand 29 states and 1161 transitions. [2022-11-18 19:39:40,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 150 transitions, 1108 flow [2022-11-18 19:39:40,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 150 transitions, 1008 flow, removed 8 selfloop flow, removed 21 redundant places. [2022-11-18 19:39:40,329 INFO L231 Difference]: Finished difference. Result has 174 places, 133 transitions, 881 flow [2022-11-18 19:39:40,330 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=881, PETRI_PLACES=174, PETRI_TRANSITIONS=133} [2022-11-18 19:39:40,331 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 103 predicate places. [2022-11-18 19:39:40,331 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 133 transitions, 881 flow [2022-11-18 19:39:40,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:40,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:40,334 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] [2022-11-18 19:39:40,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:39:40,334 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:40,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:40,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1340627400, now seen corresponding path program 5 times [2022-11-18 19:39:40,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:40,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846755776] [2022-11-18 19:39:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:40,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:40,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:40,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846755776] [2022-11-18 19:39:40,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846755776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:40,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:40,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:39:40,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62773709] [2022-11-18 19:39:40,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:40,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:39:40,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:39:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:39:40,769 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-18 19:39:40,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 133 transitions, 881 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:40,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:40,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-18 19:39:40,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:41,828 INFO L130 PetriNetUnfolder]: 49/261 cut-off events. [2022-11-18 19:39:41,829 INFO L131 PetriNetUnfolder]: For 630/636 co-relation queries the response was YES. [2022-11-18 19:39:41,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 984 conditions, 261 events. 49/261 cut-off events. For 630/636 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1089 event pairs, 9 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 905. Up to 66 conditions per place. [2022-11-18 19:39:41,834 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 65 selfloop transitions, 62 changer transitions 0/157 dead transitions. [2022-11-18 19:39:41,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 157 transitions, 1233 flow [2022-11-18 19:39:41,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:39:41,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 19:39:41,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1240 transitions. [2022-11-18 19:39:41,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47058823529411764 [2022-11-18 19:39:41,841 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1240 transitions. [2022-11-18 19:39:41,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1240 transitions. [2022-11-18 19:39:41,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:41,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1240 transitions. [2022-11-18 19:39:41,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 40.0) internal successors, (1240), 31 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:41,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:41,858 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:41,858 INFO L175 Difference]: Start difference. First operand has 174 places, 133 transitions, 881 flow. Second operand 31 states and 1240 transitions. [2022-11-18 19:39:41,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 157 transitions, 1233 flow [2022-11-18 19:39:41,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 157 transitions, 1118 flow, removed 20 selfloop flow, removed 13 redundant places. [2022-11-18 19:39:41,869 INFO L231 Difference]: Finished difference. Result has 196 places, 137 transitions, 965 flow [2022-11-18 19:39:41,869 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=965, PETRI_PLACES=196, PETRI_TRANSITIONS=137} [2022-11-18 19:39:41,870 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 125 predicate places. [2022-11-18 19:39:41,870 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 137 transitions, 965 flow [2022-11-18 19:39:41,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:41,870 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:41,871 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] [2022-11-18 19:39:41,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:39:41,873 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:41,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:41,873 INFO L85 PathProgramCache]: Analyzing trace with hash 421430010, now seen corresponding path program 6 times [2022-11-18 19:39:41,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:41,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620202538] [2022-11-18 19:39:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:41,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:42,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:42,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620202538] [2022-11-18 19:39:42,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620202538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:42,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:42,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:39:42,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802765185] [2022-11-18 19:39:42,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:42,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:39:42,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:42,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:39:42,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:39:42,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-18 19:39:42,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 137 transitions, 965 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:42,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:42,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-18 19:39:42,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:43,088 INFO L130 PetriNetUnfolder]: 52/280 cut-off events. [2022-11-18 19:39:43,090 INFO L131 PetriNetUnfolder]: For 872/878 co-relation queries the response was YES. [2022-11-18 19:39:43,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 280 events. 52/280 cut-off events. For 872/878 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1222 event pairs, 18 based on Foata normal form. 2/276 useless extension candidates. Maximal degree in co-relation 1012. Up to 76 conditions per place. [2022-11-18 19:39:43,094 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 60 selfloop transitions, 68 changer transitions 0/158 dead transitions. [2022-11-18 19:39:43,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 158 transitions, 1348 flow [2022-11-18 19:39:43,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:39:43,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-18 19:39:43,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1001 transitions. [2022-11-18 19:39:43,098 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47105882352941175 [2022-11-18 19:39:43,099 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1001 transitions. [2022-11-18 19:39:43,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1001 transitions. [2022-11-18 19:39:43,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:43,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1001 transitions. [2022-11-18 19:39:43,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 40.04) internal successors, (1001), 25 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:43,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:43,107 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:43,107 INFO L175 Difference]: Start difference. First operand has 196 places, 137 transitions, 965 flow. Second operand 25 states and 1001 transitions. [2022-11-18 19:39:43,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 158 transitions, 1348 flow [2022-11-18 19:39:43,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 158 transitions, 1222 flow, removed 13 selfloop flow, removed 26 redundant places. [2022-11-18 19:39:43,123 INFO L231 Difference]: Finished difference. Result has 199 places, 148 transitions, 1136 flow [2022-11-18 19:39:43,124 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1136, PETRI_PLACES=199, PETRI_TRANSITIONS=148} [2022-11-18 19:39:43,124 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 128 predicate places. [2022-11-18 19:39:43,125 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 148 transitions, 1136 flow [2022-11-18 19:39:43,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:43,125 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:43,125 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] [2022-11-18 19:39:43,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:39:43,126 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:43,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:43,127 INFO L85 PathProgramCache]: Analyzing trace with hash 560234912, now seen corresponding path program 7 times [2022-11-18 19:39:43,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:43,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400957977] [2022-11-18 19:39:43,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:43,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:43,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:43,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:43,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400957977] [2022-11-18 19:39:43,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400957977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:43,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:43,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:39:43,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756602370] [2022-11-18 19:39:43,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:43,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:39:43,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:43,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:39:43,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:39:43,482 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-18 19:39:43,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 148 transitions, 1136 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:43,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:43,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-18 19:39:43,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:44,625 INFO L130 PetriNetUnfolder]: 58/305 cut-off events. [2022-11-18 19:39:44,626 INFO L131 PetriNetUnfolder]: For 998/1004 co-relation queries the response was YES. [2022-11-18 19:39:44,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1256 conditions, 305 events. 58/305 cut-off events. For 998/1004 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1415 event pairs, 3 based on Foata normal form. 8/305 useless extension candidates. Maximal degree in co-relation 1162. Up to 63 conditions per place. [2022-11-18 19:39:44,629 INFO L137 encePairwiseOnDemand]: 65/85 looper letters, 48 selfloop transitions, 95 changer transitions 0/173 dead transitions. [2022-11-18 19:39:44,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 173 transitions, 1578 flow [2022-11-18 19:39:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 19:39:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 19:39:44,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 1500 transitions. [2022-11-18 19:39:44,633 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46439628482972134 [2022-11-18 19:39:44,633 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 1500 transitions. [2022-11-18 19:39:44,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 1500 transitions. [2022-11-18 19:39:44,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:44,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 1500 transitions. [2022-11-18 19:39:44,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 39.473684210526315) internal successors, (1500), 38 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:44,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 85.0) internal successors, (3315), 39 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:44,657 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 85.0) internal successors, (3315), 39 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:44,657 INFO L175 Difference]: Start difference. First operand has 199 places, 148 transitions, 1136 flow. Second operand 38 states and 1500 transitions. [2022-11-18 19:39:44,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 173 transitions, 1578 flow [2022-11-18 19:39:44,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 173 transitions, 1351 flow, removed 47 selfloop flow, removed 17 redundant places. [2022-11-18 19:39:44,672 INFO L231 Difference]: Finished difference. Result has 226 places, 158 transitions, 1289 flow [2022-11-18 19:39:44,672 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=952, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1289, PETRI_PLACES=226, PETRI_TRANSITIONS=158} [2022-11-18 19:39:44,673 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 155 predicate places. [2022-11-18 19:39:44,673 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 158 transitions, 1289 flow [2022-11-18 19:39:44,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:44,673 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:44,673 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] [2022-11-18 19:39:44,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:39:44,674 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:44,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:44,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1620138212, now seen corresponding path program 8 times [2022-11-18 19:39:44,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:44,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149559879] [2022-11-18 19:39:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:44,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:45,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:45,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149559879] [2022-11-18 19:39:45,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149559879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:45,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:45,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 19:39:45,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537082137] [2022-11-18 19:39:45,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:45,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:39:45,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:45,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:39:45,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:39:45,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 85 [2022-11-18 19:39:45,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 158 transitions, 1289 flow. Second operand has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:45,008 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:45,008 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 85 [2022-11-18 19:39:45,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:45,846 INFO L130 PetriNetUnfolder]: 57/302 cut-off events. [2022-11-18 19:39:45,846 INFO L131 PetriNetUnfolder]: For 1137/1143 co-relation queries the response was YES. [2022-11-18 19:39:45,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 302 events. 57/302 cut-off events. For 1137/1143 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1394 event pairs, 0 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1200. Up to 72 conditions per place. [2022-11-18 19:39:45,849 INFO L137 encePairwiseOnDemand]: 66/85 looper letters, 36 selfloop transitions, 100 changer transitions 0/166 dead transitions. [2022-11-18 19:39:45,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 166 transitions, 1570 flow [2022-11-18 19:39:45,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 19:39:45,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-18 19:39:45,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1217 transitions. [2022-11-18 19:39:45,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4618595825426945 [2022-11-18 19:39:45,853 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1217 transitions. [2022-11-18 19:39:45,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1217 transitions. [2022-11-18 19:39:45,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:45,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1217 transitions. [2022-11-18 19:39:45,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 39.25806451612903) internal successors, (1217), 31 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:45,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:45,860 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 85.0) internal successors, (2720), 32 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:45,860 INFO L175 Difference]: Start difference. First operand has 226 places, 158 transitions, 1289 flow. Second operand 31 states and 1217 transitions. [2022-11-18 19:39:45,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 166 transitions, 1570 flow [2022-11-18 19:39:45,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 166 transitions, 1374 flow, removed 15 selfloop flow, removed 31 redundant places. [2022-11-18 19:39:45,874 INFO L231 Difference]: Finished difference. Result has 223 places, 157 transitions, 1280 flow [2022-11-18 19:39:45,875 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1280, PETRI_PLACES=223, PETRI_TRANSITIONS=157} [2022-11-18 19:39:45,875 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 152 predicate places. [2022-11-18 19:39:45,875 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 157 transitions, 1280 flow [2022-11-18 19:39:45,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 38.86666666666667) internal successors, (583), 15 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:45,876 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:45,876 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] [2022-11-18 19:39:45,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:39:45,876 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:45,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:45,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1869797030, now seen corresponding path program 1 times [2022-11-18 19:39:45,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:45,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536929792] [2022-11-18 19:39:45,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:45,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:45,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:46,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:46,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:46,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536929792] [2022-11-18 19:39:46,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536929792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:46,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:46,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:39:46,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783151862] [2022-11-18 19:39:46,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:46,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:39:46,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:46,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:39:46,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:39:46,047 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-18 19:39:46,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 157 transitions, 1280 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:46,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-18 19:39:46,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:46,302 INFO L130 PetriNetUnfolder]: 62/347 cut-off events. [2022-11-18 19:39:46,302 INFO L131 PetriNetUnfolder]: For 1574/1580 co-relation queries the response was YES. [2022-11-18 19:39:46,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1515 conditions, 347 events. 62/347 cut-off events. For 1574/1580 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1815 event pairs, 28 based on Foata normal form. 14/350 useless extension candidates. Maximal degree in co-relation 1435. Up to 150 conditions per place. [2022-11-18 19:39:46,305 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 74 selfloop transitions, 23 changer transitions 37/181 dead transitions. [2022-11-18 19:39:46,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 181 transitions, 1768 flow [2022-11-18 19:39:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:39:46,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:39:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 542 transitions. [2022-11-18 19:39:46,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6376470588235295 [2022-11-18 19:39:46,307 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 542 transitions. [2022-11-18 19:39:46,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 542 transitions. [2022-11-18 19:39:46,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:46,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 542 transitions. [2022-11-18 19:39:46,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 54.2) internal successors, (542), 10 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,324 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,324 INFO L175 Difference]: Start difference. First operand has 223 places, 157 transitions, 1280 flow. Second operand 10 states and 542 transitions. [2022-11-18 19:39:46,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 181 transitions, 1768 flow [2022-11-18 19:39:46,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 181 transitions, 1490 flow, removed 7 selfloop flow, removed 32 redundant places. [2022-11-18 19:39:46,338 INFO L231 Difference]: Finished difference. Result has 206 places, 139 transitions, 942 flow [2022-11-18 19:39:46,358 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=1023, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=942, PETRI_PLACES=206, PETRI_TRANSITIONS=139} [2022-11-18 19:39:46,359 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 135 predicate places. [2022-11-18 19:39:46,359 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 139 transitions, 942 flow [2022-11-18 19:39:46,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:46,360 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] [2022-11-18 19:39:46,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:39:46,360 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:46,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:46,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1437268103, now seen corresponding path program 1 times [2022-11-18 19:39:46,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:46,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406178748] [2022-11-18 19:39:46,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:46,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:46,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:46,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:46,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406178748] [2022-11-18 19:39:46,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406178748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:46,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:46,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:39:46,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121933346] [2022-11-18 19:39:46,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:46,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:39:46,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:46,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:39:46,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:39:46,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-18 19:39:46,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 139 transitions, 942 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:46,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-18 19:39:46,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:46,750 INFO L130 PetriNetUnfolder]: 48/261 cut-off events. [2022-11-18 19:39:46,751 INFO L131 PetriNetUnfolder]: For 1004/1008 co-relation queries the response was YES. [2022-11-18 19:39:46,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1042 conditions, 261 events. 48/261 cut-off events. For 1004/1008 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1096 event pairs, 24 based on Foata normal form. 5/260 useless extension candidates. Maximal degree in co-relation 1001. Up to 140 conditions per place. [2022-11-18 19:39:46,753 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 75 selfloop transitions, 22 changer transitions 15/144 dead transitions. [2022-11-18 19:39:46,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 144 transitions, 1171 flow [2022-11-18 19:39:46,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:39:46,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:39:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 535 transitions. [2022-11-18 19:39:46,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6294117647058823 [2022-11-18 19:39:46,755 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 535 transitions. [2022-11-18 19:39:46,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 535 transitions. [2022-11-18 19:39:46,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:46,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 535 transitions. [2022-11-18 19:39:46,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 53.5) internal successors, (535), 10 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,759 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,759 INFO L175 Difference]: Start difference. First operand has 206 places, 139 transitions, 942 flow. Second operand 10 states and 535 transitions. [2022-11-18 19:39:46,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 144 transitions, 1171 flow [2022-11-18 19:39:46,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 144 transitions, 1052 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-11-18 19:39:46,768 INFO L231 Difference]: Finished difference. Result has 179 places, 125 transitions, 813 flow [2022-11-18 19:39:46,768 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=813, PETRI_PLACES=179, PETRI_TRANSITIONS=125} [2022-11-18 19:39:46,769 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 108 predicate places. [2022-11-18 19:39:46,769 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 125 transitions, 813 flow [2022-11-18 19:39:46,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:46,769 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] [2022-11-18 19:39:46,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:39:46,770 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:46,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:46,770 INFO L85 PathProgramCache]: Analyzing trace with hash -849425040, now seen corresponding path program 2 times [2022-11-18 19:39:46,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:46,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299662347] [2022-11-18 19:39:46,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:46,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:46,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:46,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299662347] [2022-11-18 19:39:46,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299662347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:46,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:46,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:39:46,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996234147] [2022-11-18 19:39:46,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:46,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:39:46,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:39:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:39:46,934 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-18 19:39:46,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 125 transitions, 813 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:46,934 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-18 19:39:46,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:47,175 INFO L130 PetriNetUnfolder]: 51/262 cut-off events. [2022-11-18 19:39:47,175 INFO L131 PetriNetUnfolder]: For 853/855 co-relation queries the response was YES. [2022-11-18 19:39:47,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 262 events. 51/262 cut-off events. For 853/855 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1105 event pairs, 23 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 988. Up to 119 conditions per place. [2022-11-18 19:39:47,178 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 57 selfloop transitions, 20 changer transitions 25/144 dead transitions. [2022-11-18 19:39:47,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 144 transitions, 1150 flow [2022-11-18 19:39:47,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:39:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:39:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 534 transitions. [2022-11-18 19:39:47,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6282352941176471 [2022-11-18 19:39:47,180 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 534 transitions. [2022-11-18 19:39:47,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 534 transitions. [2022-11-18 19:39:47,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:47,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 534 transitions. [2022-11-18 19:39:47,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 53.4) internal successors, (534), 10 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,183 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,184 INFO L175 Difference]: Start difference. First operand has 179 places, 125 transitions, 813 flow. Second operand 10 states and 534 transitions. [2022-11-18 19:39:47,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 144 transitions, 1150 flow [2022-11-18 19:39:47,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 144 transitions, 1063 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-18 19:39:47,192 INFO L231 Difference]: Finished difference. Result has 170 places, 116 transitions, 750 flow [2022-11-18 19:39:47,193 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=750, PETRI_PLACES=170, PETRI_TRANSITIONS=116} [2022-11-18 19:39:47,193 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 99 predicate places. [2022-11-18 19:39:47,193 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 116 transitions, 750 flow [2022-11-18 19:39:47,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:47,194 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] [2022-11-18 19:39:47,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:39:47,195 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:47,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:47,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1081082712, now seen corresponding path program 3 times [2022-11-18 19:39:47,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:47,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571086102] [2022-11-18 19:39:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:47,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:47,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:47,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:47,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571086102] [2022-11-18 19:39:47,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571086102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:47,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:47,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:39:47,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627210345] [2022-11-18 19:39:47,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:47,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:39:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:47,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:39:47,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:39:47,356 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-18 19:39:47,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 116 transitions, 750 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:47,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-18 19:39:47,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:47,614 INFO L130 PetriNetUnfolder]: 41/216 cut-off events. [2022-11-18 19:39:47,614 INFO L131 PetriNetUnfolder]: For 684/686 co-relation queries the response was YES. [2022-11-18 19:39:47,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866 conditions, 216 events. 41/216 cut-off events. For 684/686 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 790 event pairs, 12 based on Foata normal form. 8/219 useless extension candidates. Maximal degree in co-relation 828. Up to 75 conditions per place. [2022-11-18 19:39:47,616 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 42 selfloop transitions, 5 changer transitions 42/127 dead transitions. [2022-11-18 19:39:47,616 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 127 transitions, 993 flow [2022-11-18 19:39:47,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:39:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:39:47,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 583 transitions. [2022-11-18 19:39:47,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6235294117647059 [2022-11-18 19:39:47,618 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 583 transitions. [2022-11-18 19:39:47,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 583 transitions. [2022-11-18 19:39:47,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:47,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 583 transitions. [2022-11-18 19:39:47,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 53.0) internal successors, (583), 11 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,622 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,622 INFO L175 Difference]: Start difference. First operand has 170 places, 116 transitions, 750 flow. Second operand 11 states and 583 transitions. [2022-11-18 19:39:47,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 127 transitions, 993 flow [2022-11-18 19:39:47,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 127 transitions, 901 flow, removed 9 selfloop flow, removed 14 redundant places. [2022-11-18 19:39:47,631 INFO L231 Difference]: Finished difference. Result has 155 places, 84 transitions, 415 flow [2022-11-18 19:39:47,631 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=415, PETRI_PLACES=155, PETRI_TRANSITIONS=84} [2022-11-18 19:39:47,632 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 84 predicate places. [2022-11-18 19:39:47,632 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 84 transitions, 415 flow [2022-11-18 19:39:47,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,632 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:47,633 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] [2022-11-18 19:39:47,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:39:47,633 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:47,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:47,633 INFO L85 PathProgramCache]: Analyzing trace with hash 179428634, now seen corresponding path program 4 times [2022-11-18 19:39:47,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:47,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960523831] [2022-11-18 19:39:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:47,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:47,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:47,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960523831] [2022-11-18 19:39:47,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960523831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:47,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:47,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:39:47,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036322599] [2022-11-18 19:39:47,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:47,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:39:47,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:47,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:39:47,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:39:47,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-18 19:39:47,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 84 transitions, 415 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:47,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-18 19:39:47,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:48,044 INFO L130 PetriNetUnfolder]: 22/130 cut-off events. [2022-11-18 19:39:48,044 INFO L131 PetriNetUnfolder]: For 231/231 co-relation queries the response was YES. [2022-11-18 19:39:48,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 130 events. 22/130 cut-off events. For 231/231 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 266 event pairs, 10 based on Foata normal form. 2/129 useless extension candidates. Maximal degree in co-relation 416. Up to 50 conditions per place. [2022-11-18 19:39:48,046 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 26 selfloop transitions, 14 changer transitions 12/89 dead transitions. [2022-11-18 19:39:48,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 89 transitions, 539 flow [2022-11-18 19:39:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:39:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:39:48,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 528 transitions. [2022-11-18 19:39:48,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6211764705882353 [2022-11-18 19:39:48,048 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 528 transitions. [2022-11-18 19:39:48,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 528 transitions. [2022-11-18 19:39:48,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:48,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 528 transitions. [2022-11-18 19:39:48,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 52.8) internal successors, (528), 10 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,051 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 85.0) internal successors, (935), 11 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,051 INFO L175 Difference]: Start difference. First operand has 155 places, 84 transitions, 415 flow. Second operand 10 states and 528 transitions. [2022-11-18 19:39:48,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 89 transitions, 539 flow [2022-11-18 19:39:48,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 89 transitions, 443 flow, removed 18 selfloop flow, removed 22 redundant places. [2022-11-18 19:39:48,057 INFO L231 Difference]: Finished difference. Result has 113 places, 77 transitions, 312 flow [2022-11-18 19:39:48,057 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=312, PETRI_PLACES=113, PETRI_TRANSITIONS=77} [2022-11-18 19:39:48,058 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 42 predicate places. [2022-11-18 19:39:48,058 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 77 transitions, 312 flow [2022-11-18 19:39:48,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,058 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:48,058 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] [2022-11-18 19:39:48,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:39:48,059 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:48,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1321658234, now seen corresponding path program 5 times [2022-11-18 19:39:48,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:48,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651456015] [2022-11-18 19:39:48,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:48,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:48,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:48,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651456015] [2022-11-18 19:39:48,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651456015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:48,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:48,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:39:48,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347439546] [2022-11-18 19:39:48,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:48,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:39:48,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:48,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:39:48,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:39:48,229 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-18 19:39:48,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 77 transitions, 312 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:48,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-18 19:39:48,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:48,420 INFO L130 PetriNetUnfolder]: 16/104 cut-off events. [2022-11-18 19:39:48,420 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2022-11-18 19:39:48,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 104 events. 16/104 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 153 event pairs, 6 based on Foata normal form. 2/104 useless extension candidates. Maximal degree in co-relation 283. Up to 26 conditions per place. [2022-11-18 19:39:48,421 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 23 selfloop transitions, 7 changer transitions 16/81 dead transitions. [2022-11-18 19:39:48,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 81 transitions, 408 flow [2022-11-18 19:39:48,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:39:48,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:39:48,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 579 transitions. [2022-11-18 19:39:48,423 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6192513368983957 [2022-11-18 19:39:48,423 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 579 transitions. [2022-11-18 19:39:48,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 579 transitions. [2022-11-18 19:39:48,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:48,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 579 transitions. [2022-11-18 19:39:48,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 52.63636363636363) internal successors, (579), 11 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,426 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 85.0) internal successors, (1020), 12 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,427 INFO L175 Difference]: Start difference. First operand has 113 places, 77 transitions, 312 flow. Second operand 11 states and 579 transitions. [2022-11-18 19:39:48,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 81 transitions, 408 flow [2022-11-18 19:39:48,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 81 transitions, 355 flow, removed 4 selfloop flow, removed 10 redundant places. [2022-11-18 19:39:48,429 INFO L231 Difference]: Finished difference. Result has 104 places, 65 transitions, 203 flow [2022-11-18 19:39:48,429 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=203, PETRI_PLACES=104, PETRI_TRANSITIONS=65} [2022-11-18 19:39:48,430 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 33 predicate places. [2022-11-18 19:39:48,430 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 65 transitions, 203 flow [2022-11-18 19:39:48,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,430 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:48,430 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] [2022-11-18 19:39:48,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:39:48,431 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-11-18 19:39:48,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:48,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1002112392, now seen corresponding path program 6 times [2022-11-18 19:39:48,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:48,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826156886] [2022-11-18 19:39:48,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:48,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:48,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:48,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826156886] [2022-11-18 19:39:48,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826156886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:48,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:48,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:39:48,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786097926] [2022-11-18 19:39:48,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:48,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:39:48,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:48,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:39:48,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:39:48,599 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 85 [2022-11-18 19:39:48,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 65 transitions, 203 flow. Second operand has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:48,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 85 [2022-11-18 19:39:48,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:48,799 INFO L130 PetriNetUnfolder]: 9/77 cut-off events. [2022-11-18 19:39:48,799 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-18 19:39:48,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 77 events. 9/77 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 2/79 useless extension candidates. Maximal degree in co-relation 169. Up to 11 conditions per place. [2022-11-18 19:39:48,800 INFO L137 encePairwiseOnDemand]: 76/85 looper letters, 0 selfloop transitions, 0 changer transitions 68/68 dead transitions. [2022-11-18 19:39:48,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 68 transitions, 273 flow [2022-11-18 19:39:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:39:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 19:39:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 620 transitions. [2022-11-18 19:39:48,809 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6078431372549019 [2022-11-18 19:39:48,809 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 620 transitions. [2022-11-18 19:39:48,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 620 transitions. [2022-11-18 19:39:48,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:48,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 620 transitions. [2022-11-18 19:39:48,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 51.666666666666664) internal successors, (620), 12 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,818 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,818 INFO L175 Difference]: Start difference. First operand has 104 places, 65 transitions, 203 flow. Second operand 12 states and 620 transitions. [2022-11-18 19:39:48,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 68 transitions, 273 flow [2022-11-18 19:39:48,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 68 transitions, 223 flow, removed 5 selfloop flow, removed 15 redundant places. [2022-11-18 19:39:48,820 INFO L231 Difference]: Finished difference. Result has 84 places, 0 transitions, 0 flow [2022-11-18 19:39:48,820 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=85, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=84, PETRI_TRANSITIONS=0} [2022-11-18 19:39:48,821 INFO L288 CegarLoopForPetriNet]: 71 programPoint places, 13 predicate places. [2022-11-18 19:39:48,821 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 0 transitions, 0 flow [2022-11-18 19:39:48,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 51.55555555555556) internal successors, (464), 9 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:48,824 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2022-11-18 19:39:48,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2022-11-18 19:39:48,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2022-11-18 19:39:48,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2022-11-18 19:39:48,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2022-11-18 19:39:48,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2022-11-18 19:39:48,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2022-11-18 19:39:48,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:39:48,826 INFO L444 BasicCegarLoop]: Path program histogram: [8, 6, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:48,833 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 19:39:48,834 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:39:48,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:39:48 BasicIcfg [2022-11-18 19:39:48,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:39:48,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:39:48,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:39:48,839 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:39:48,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:30" (3/4) ... [2022-11-18 19:39:48,842 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 19:39:48,849 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2022-11-18 19:39:48,854 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-11-18 19:39:48,854 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 19:39:48,855 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 19:39:48,893 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:39:48,893 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:39:48,894 INFO L158 Benchmark]: Toolchain (without parser) took 19935.23ms. Allocated memory was 100.7MB in the beginning and 234.9MB in the end (delta: 134.2MB). Free memory was 57.7MB in the beginning and 141.7MB in the end (delta: -84.0MB). Peak memory consumption was 49.7MB. Max. memory is 16.1GB. [2022-11-18 19:39:48,894 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:39:48,894 INFO L158 Benchmark]: CACSL2BoogieTranslator took 656.62ms. Allocated memory is still 100.7MB. Free memory was 57.5MB in the beginning and 60.0MB in the end (delta: -2.5MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-11-18 19:39:48,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 71.68ms. Allocated memory is still 100.7MB. Free memory was 60.0MB in the beginning and 57.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:39:48,895 INFO L158 Benchmark]: Boogie Preprocessor took 50.23ms. Allocated memory is still 100.7MB. Free memory was 57.6MB in the beginning and 56.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:39:48,895 INFO L158 Benchmark]: RCFGBuilder took 482.36ms. Allocated memory is still 100.7MB. Free memory was 55.9MB in the beginning and 42.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-18 19:39:48,896 INFO L158 Benchmark]: TraceAbstraction took 18612.77ms. Allocated memory was 100.7MB in the beginning and 234.9MB in the end (delta: 134.2MB). Free memory was 41.8MB in the beginning and 143.7MB in the end (delta: -102.0MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. [2022-11-18 19:39:48,896 INFO L158 Benchmark]: Witness Printer took 53.80ms. Allocated memory is still 234.9MB. Free memory was 143.7MB in the beginning and 141.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:39:48,900 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 100.7MB. Free memory is still 76.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 656.62ms. Allocated memory is still 100.7MB. Free memory was 57.5MB in the beginning and 60.0MB in the end (delta: -2.5MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 71.68ms. Allocated memory is still 100.7MB. Free memory was 60.0MB in the beginning and 57.6MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.23ms. Allocated memory is still 100.7MB. Free memory was 57.6MB in the beginning and 56.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 482.36ms. Allocated memory is still 100.7MB. Free memory was 55.9MB in the beginning and 42.5MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 18612.77ms. Allocated memory was 100.7MB in the beginning and 234.9MB in the end (delta: 134.2MB). Free memory was 41.8MB in the beginning and 143.7MB in the end (delta: -102.0MB). Peak memory consumption was 34.3MB. Max. memory is 16.1GB. * Witness Printer took 53.80ms. Allocated memory is still 234.9MB. Free memory was 143.7MB in the beginning and 141.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 936]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 924]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 103 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.4s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2136 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2136 mSDsluCounter, 2940 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2506 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4425 IncrementalHoareTripleChecker+Invalid, 4502 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 434 mSDtfsCounter, 4425 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 557 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 524 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3228 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1289occurred in iteration=13, InterpolantAutomatonStates: 389, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 1113 NumberOfCodeBlocks, 1113 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1092 ConstructedInterpolants, 0 QuantifiedInterpolants, 4766 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 19:39:48,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ff96edf-8efc-4b7e-a6f3-b7f549aee6ff/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE