/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:59:01,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:59:01,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:59:01,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:59:01,806 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:59:01,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:59:01,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:59:01,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:59:01,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:59:01,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:59:01,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:59:01,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:59:01,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:59:01,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:59:01,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:59:01,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:59:01,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:59:01,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:59:01,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:59:01,835 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:59:01,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:59:01,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:59:01,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:59:01,840 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:59:01,845 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:59:01,845 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:59:01,845 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:59:01,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:59:01,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:59:01,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:59:01,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:59:01,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:59:01,849 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:59:01,849 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:59:01,850 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:59:01,850 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:59:01,851 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:59:01,851 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:59:01,851 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:59:01,852 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:59:01,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:59:01,853 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:59:01,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:59:01,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:59:01,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:59:01,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:59:01,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:59:01,881 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:59:01,881 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:59:01,881 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:59:01,881 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:59:01,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:59:01,882 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:59:01,882 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:59:01,882 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:59:01,882 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:59:01,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:59:01,882 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:59:01,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:59:01,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:59:01,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:59:01,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:59:01,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:59:01,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:59:01,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:59:01,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:59:01,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:59:01,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:59:01,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:59:01,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:59:01,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:59:01,886 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:59:01,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:59:01,887 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:59:02,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:59:02,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:59:02,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:59:02,119 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:59:02,120 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:59:02,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c [2022-09-16 11:59:02,176 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a376e7b/a352476b64fc49ca9f34b070b2a6cb1e/FLAG6995433fb [2022-09-16 11:59:02,563 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:59:02,564 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c [2022-09-16 11:59:02,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a376e7b/a352476b64fc49ca9f34b070b2a6cb1e/FLAG6995433fb [2022-09-16 11:59:02,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b4a376e7b/a352476b64fc49ca9f34b070b2a6cb1e [2022-09-16 11:59:02,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:59:02,588 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:59:02,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:59:02,589 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:59:02,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:59:02,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:02,592 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d509bd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02, skipping insertion in model container [2022-09-16 11:59:02,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:02,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:59:02,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:59:02,838 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-09-16 11:59:02,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:59:02,847 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:59:02,870 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2022-09-16 11:59:02,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:59:02,896 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:59:02,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02 WrapperNode [2022-09-16 11:59:02,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:59:02,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:59:02,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:59:02,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:59:02,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:02,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:02,962 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 143 [2022-09-16 11:59:02,962 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:59:02,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:59:02,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:59:02,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:59:02,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:02,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:02,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:02,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:02,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:02,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:02,984 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:02,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:59:02,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:59:02,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:59:02,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:59:02,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02" (1/1) ... [2022-09-16 11:59:03,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:59:03,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:03,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:59:03,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:59:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:59:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:59:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:59:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:59:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:59:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:59:03,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:59:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:59:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:59:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:59:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:59:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:59:03,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:59:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:59:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:59:03,062 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:59:03,179 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:59:03,181 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:59:03,467 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:59:03,475 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:59:03,475 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-16 11:59:03,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:59:03 BoogieIcfgContainer [2022-09-16 11:59:03,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:59:03,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:59:03,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:59:03,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:59:03,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:59:02" (1/3) ... [2022-09-16 11:59:03,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a03fbd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:59:03, skipping insertion in model container [2022-09-16 11:59:03,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:02" (2/3) ... [2022-09-16 11:59:03,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a03fbd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:59:03, skipping insertion in model container [2022-09-16 11:59:03,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:59:03" (3/3) ... [2022-09-16 11:59:03,487 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2022-09-16 11:59:03,500 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:59:03,500 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-09-16 11:59:03,500 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:59:03,591 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:59:03,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 231 transitions, 486 flow [2022-09-16 11:59:03,733 INFO L130 PetriNetUnfolder]: 17/228 cut-off events. [2022-09-16 11:59:03,734 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:59:03,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 228 events. 17/228 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 195 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 170. Up to 2 conditions per place. [2022-09-16 11:59:03,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 231 transitions, 486 flow [2022-09-16 11:59:03,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 192 transitions, 399 flow [2022-09-16 11:59:03,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:59:03,766 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=false, 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;@5373f2ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:59:03,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-09-16 11:59:03,779 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-09-16 11:59:03,779 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:59:03,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:03,780 INFO L208 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] [2022-09-16 11:59:03,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:03,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:03,784 INFO L85 PathProgramCache]: Analyzing trace with hash 710345796, now seen corresponding path program 1 times [2022-09-16 11:59:03,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:03,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929385573] [2022-09-16 11:59:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:03,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:04,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:04,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929385573] [2022-09-16 11:59:04,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929385573] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:04,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:04,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:04,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204035708] [2022-09-16 11:59:04,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:04,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:04,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:04,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:04,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:04,072 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 231 [2022-09-16 11:59:04,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 192 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:04,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 231 [2022-09-16 11:59:04,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:04,280 INFO L130 PetriNetUnfolder]: 9/293 cut-off events. [2022-09-16 11:59:04,281 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-09-16 11:59:04,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 293 events. 9/293 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 667 event pairs, 0 based on Foata normal form. 24/285 useless extension candidates. Maximal degree in co-relation 296. Up to 31 conditions per place. [2022-09-16 11:59:04,284 INFO L137 encePairwiseOnDemand]: 208/231 looper letters, 42 selfloop transitions, 9 changer transitions 5/204 dead transitions. [2022-09-16 11:59:04,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 204 transitions, 540 flow [2022-09-16 11:59:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:59:04,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:59:04,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1011 transitions. [2022-09-16 11:59:04,299 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8753246753246753 [2022-09-16 11:59:04,300 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1011 transitions. [2022-09-16 11:59:04,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1011 transitions. [2022-09-16 11:59:04,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:04,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1011 transitions. [2022-09-16 11:59:04,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 202.2) internal successors, (1011), 5 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,317 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,318 INFO L175 Difference]: Start difference. First operand has 187 places, 192 transitions, 399 flow. Second operand 5 states and 1011 transitions. [2022-09-16 11:59:04,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 204 transitions, 540 flow [2022-09-16 11:59:04,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 204 transitions, 522 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:04,325 INFO L231 Difference]: Finished difference. Result has 189 places, 184 transitions, 427 flow [2022-09-16 11:59:04,327 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=189, PETRI_TRANSITIONS=184} [2022-09-16 11:59:04,330 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 2 predicate places. [2022-09-16 11:59:04,330 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 184 transitions, 427 flow [2022-09-16 11:59:04,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.5) internal successors, (758), 4 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:04,331 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:04,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:59:04,331 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:04,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:04,332 INFO L85 PathProgramCache]: Analyzing trace with hash -766050475, now seen corresponding path program 1 times [2022-09-16 11:59:04,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:04,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898168157] [2022-09-16 11:59:04,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:04,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:04,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:04,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898168157] [2022-09-16 11:59:04,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898168157] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:04,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343923826] [2022-09-16 11:59:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:04,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:04,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:04,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:04,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:59:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:04,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:04,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:04,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:04,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:04,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:04,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343923826] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:04,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:04,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:59:04,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098361629] [2022-09-16 11:59:04,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:04,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:59:04,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:04,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:59:04,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:59:04,585 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 231 [2022-09-16 11:59:04,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 184 transitions, 427 flow. Second operand has 12 states, 12 states have (on average 190.66666666666666) internal successors, (2288), 12 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,588 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:04,588 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 231 [2022-09-16 11:59:04,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:04,908 INFO L130 PetriNetUnfolder]: 21/621 cut-off events. [2022-09-16 11:59:04,909 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-09-16 11:59:04,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 621 events. 21/621 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2509 event pairs, 0 based on Foata normal form. 6/572 useless extension candidates. Maximal degree in co-relation 456. Up to 24 conditions per place. [2022-09-16 11:59:04,914 INFO L137 encePairwiseOnDemand]: 216/231 looper letters, 81 selfloop transitions, 40 changer transitions 0/269 dead transitions. [2022-09-16 11:59:04,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 269 transitions, 913 flow [2022-09-16 11:59:04,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:59:04,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:59:04,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3511 transitions. [2022-09-16 11:59:04,920 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8443963443963444 [2022-09-16 11:59:04,920 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3511 transitions. [2022-09-16 11:59:04,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3511 transitions. [2022-09-16 11:59:04,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:04,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3511 transitions. [2022-09-16 11:59:04,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 195.05555555555554) internal successors, (3511), 18 states have internal predecessors, (3511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,950 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 231.0) internal successors, (4389), 19 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,953 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 231.0) internal successors, (4389), 19 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,953 INFO L175 Difference]: Start difference. First operand has 189 places, 184 transitions, 427 flow. Second operand 18 states and 3511 transitions. [2022-09-16 11:59:04,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 269 transitions, 913 flow [2022-09-16 11:59:04,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 269 transitions, 908 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:04,960 INFO L231 Difference]: Finished difference. Result has 204 places, 211 transitions, 660 flow [2022-09-16 11:59:04,961 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=660, PETRI_PLACES=204, PETRI_TRANSITIONS=211} [2022-09-16 11:59:04,961 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 17 predicate places. [2022-09-16 11:59:04,961 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 211 transitions, 660 flow [2022-09-16 11:59:04,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 190.66666666666666) internal successors, (2288), 12 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:04,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:04,964 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:04,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:05,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:05,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:05,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:05,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2022239485, now seen corresponding path program 1 times [2022-09-16 11:59:05,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:05,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061029658] [2022-09-16 11:59:05,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:05,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:05,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:05,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061029658] [2022-09-16 11:59:05,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061029658] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:05,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [108061892] [2022-09-16 11:59:05,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:05,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:05,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:05,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:05,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:59:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:05,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:05,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:05,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:05,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [108061892] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:05,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:05,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:59:05,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149450733] [2022-09-16 11:59:05,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:05,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:05,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:05,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:05,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:05,395 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 231 [2022-09-16 11:59:05,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 211 transitions, 660 flow. Second operand has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:05,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 231 [2022-09-16 11:59:05,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:05,537 INFO L130 PetriNetUnfolder]: 21/613 cut-off events. [2022-09-16 11:59:05,537 INFO L131 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-09-16 11:59:05,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 857 conditions, 613 events. 21/613 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2473 event pairs, 0 based on Foata normal form. 8/566 useless extension candidates. Maximal degree in co-relation 654. Up to 52 conditions per place. [2022-09-16 11:59:05,542 INFO L137 encePairwiseOnDemand]: 220/231 looper letters, 43 selfloop transitions, 27 changer transitions 0/218 dead transitions. [2022-09-16 11:59:05,542 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 218 transitions, 786 flow [2022-09-16 11:59:05,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:05,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:05,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1367 transitions. [2022-09-16 11:59:05,545 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8453927025355596 [2022-09-16 11:59:05,545 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1367 transitions. [2022-09-16 11:59:05,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1367 transitions. [2022-09-16 11:59:05,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:05,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1367 transitions. [2022-09-16 11:59:05,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 195.28571428571428) internal successors, (1367), 7 states have internal predecessors, (1367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,551 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,551 INFO L175 Difference]: Start difference. First operand has 204 places, 211 transitions, 660 flow. Second operand 7 states and 1367 transitions. [2022-09-16 11:59:05,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 218 transitions, 786 flow [2022-09-16 11:59:05,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 218 transitions, 712 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:05,562 INFO L231 Difference]: Finished difference. Result has 199 places, 203 transitions, 586 flow [2022-09-16 11:59:05,562 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=586, PETRI_PLACES=199, PETRI_TRANSITIONS=203} [2022-09-16 11:59:05,564 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 12 predicate places. [2022-09-16 11:59:05,564 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 203 transitions, 586 flow [2022-09-16 11:59:05,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 190.33333333333334) internal successors, (1142), 6 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:05,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:05,565 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:05,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 11:59:05,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:59:05,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:05,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:05,787 INFO L85 PathProgramCache]: Analyzing trace with hash 824590980, now seen corresponding path program 2 times [2022-09-16 11:59:05,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:05,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904056623] [2022-09-16 11:59:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:05,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:05,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:05,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904056623] [2022-09-16 11:59:05,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904056623] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:05,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222177974] [2022-09-16 11:59:05,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:05,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:05,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:05,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:05,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:59:06,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:06,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:06,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:59:06,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:59:06,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:06,254 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:59:06,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222177974] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:06,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:06,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:59:06,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332415772] [2022-09-16 11:59:06,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:06,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:59:06,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:06,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:59:06,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:59:06,258 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 231 [2022-09-16 11:59:06,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 203 transitions, 586 flow. Second operand has 18 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:06,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 231 [2022-09-16 11:59:06,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:06,899 INFO L130 PetriNetUnfolder]: 169/1433 cut-off events. [2022-09-16 11:59:06,899 INFO L131 PetriNetUnfolder]: For 173/173 co-relation queries the response was YES. [2022-09-16 11:59:06,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2042 conditions, 1433 events. 169/1433 cut-off events. For 173/173 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 8523 event pairs, 84 based on Foata normal form. 4/1192 useless extension candidates. Maximal degree in co-relation 1459. Up to 63 conditions per place. [2022-09-16 11:59:06,909 INFO L137 encePairwiseOnDemand]: 212/231 looper letters, 148 selfloop transitions, 53 changer transitions 0/329 dead transitions. [2022-09-16 11:59:06,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 329 transitions, 1318 flow [2022-09-16 11:59:06,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:59:06,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 11:59:06,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4213 transitions. [2022-09-16 11:59:06,915 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7599206349206349 [2022-09-16 11:59:06,915 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4213 transitions. [2022-09-16 11:59:06,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4213 transitions. [2022-09-16 11:59:06,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:06,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4213 transitions. [2022-09-16 11:59:06,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 175.54166666666666) internal successors, (4213), 24 states have internal predecessors, (4213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 231.0) internal successors, (5775), 25 states have internal predecessors, (5775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,933 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 231.0) internal successors, (5775), 25 states have internal predecessors, (5775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,933 INFO L175 Difference]: Start difference. First operand has 199 places, 203 transitions, 586 flow. Second operand 24 states and 4213 transitions. [2022-09-16 11:59:06,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 329 transitions, 1318 flow [2022-09-16 11:59:06,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 329 transitions, 1260 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 11:59:06,940 INFO L231 Difference]: Finished difference. Result has 212 places, 213 transitions, 691 flow [2022-09-16 11:59:06,940 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=516, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=691, PETRI_PLACES=212, PETRI_TRANSITIONS=213} [2022-09-16 11:59:06,941 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 25 predicate places. [2022-09-16 11:59:06,941 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 213 transitions, 691 flow [2022-09-16 11:59:06,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:06,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:06,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:06,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:07,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:07,160 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:07,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1619727328, now seen corresponding path program 1 times [2022-09-16 11:59:07,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:07,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886547410] [2022-09-16 11:59:07,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:07,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:07,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:07,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:07,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:07,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886547410] [2022-09-16 11:59:07,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886547410] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:07,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:07,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:07,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629026424] [2022-09-16 11:59:07,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:07,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:07,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:07,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:07,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:07,219 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 231 [2022-09-16 11:59:07,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 213 transitions, 691 flow. Second operand has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:07,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 231 [2022-09-16 11:59:07,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:07,506 INFO L130 PetriNetUnfolder]: 379/2609 cut-off events. [2022-09-16 11:59:07,506 INFO L131 PetriNetUnfolder]: For 107/135 co-relation queries the response was YES. [2022-09-16 11:59:07,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3977 conditions, 2609 events. 379/2609 cut-off events. For 107/135 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 21531 event pairs, 140 based on Foata normal form. 0/2259 useless extension candidates. Maximal degree in co-relation 529. Up to 442 conditions per place. [2022-09-16 11:59:07,523 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 30 selfloop transitions, 4 changer transitions 0/230 dead transitions. [2022-09-16 11:59:07,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 230 transitions, 804 flow [2022-09-16 11:59:07,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:59:07,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:59:07,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1036 transitions. [2022-09-16 11:59:07,525 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.896969696969697 [2022-09-16 11:59:07,525 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1036 transitions. [2022-09-16 11:59:07,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1036 transitions. [2022-09-16 11:59:07,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:07,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1036 transitions. [2022-09-16 11:59:07,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.2) internal successors, (1036), 5 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,529 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,529 INFO L175 Difference]: Start difference. First operand has 212 places, 213 transitions, 691 flow. Second operand 5 states and 1036 transitions. [2022-09-16 11:59:07,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 230 transitions, 804 flow [2022-09-16 11:59:07,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 230 transitions, 725 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-09-16 11:59:07,533 INFO L231 Difference]: Finished difference. Result has 204 places, 216 transitions, 642 flow [2022-09-16 11:59:07,533 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=642, PETRI_PLACES=204, PETRI_TRANSITIONS=216} [2022-09-16 11:59:07,534 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 17 predicate places. [2022-09-16 11:59:07,534 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 216 transitions, 642 flow [2022-09-16 11:59:07,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.75) internal successors, (807), 4 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:07,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:07,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:59:07,535 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:07,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:07,535 INFO L85 PathProgramCache]: Analyzing trace with hash -821590381, now seen corresponding path program 1 times [2022-09-16 11:59:07,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:07,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75863807] [2022-09-16 11:59:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:07,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:07,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:07,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:07,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75863807] [2022-09-16 11:59:07,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75863807] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:07,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:07,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:07,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634056178] [2022-09-16 11:59:07,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:07,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:07,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:07,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:07,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:07,598 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 231 [2022-09-16 11:59:07,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 216 transitions, 642 flow. Second operand has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:07,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 231 [2022-09-16 11:59:07,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:07,900 INFO L130 PetriNetUnfolder]: 470/2056 cut-off events. [2022-09-16 11:59:07,901 INFO L131 PetriNetUnfolder]: For 374/374 co-relation queries the response was YES. [2022-09-16 11:59:07,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 2056 events. 470/2056 cut-off events. For 374/374 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 17202 event pairs, 231 based on Foata normal form. 0/1713 useless extension candidates. Maximal degree in co-relation 2749. Up to 617 conditions per place. [2022-09-16 11:59:07,920 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 29 selfloop transitions, 4 changer transitions 0/232 dead transitions. [2022-09-16 11:59:07,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 232 transitions, 750 flow [2022-09-16 11:59:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:59:07,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:59:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1035 transitions. [2022-09-16 11:59:07,927 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8961038961038961 [2022-09-16 11:59:07,927 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1035 transitions. [2022-09-16 11:59:07,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1035 transitions. [2022-09-16 11:59:07,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:07,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1035 transitions. [2022-09-16 11:59:07,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,931 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,931 INFO L175 Difference]: Start difference. First operand has 204 places, 216 transitions, 642 flow. Second operand 5 states and 1035 transitions. [2022-09-16 11:59:07,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 232 transitions, 750 flow [2022-09-16 11:59:07,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 232 transitions, 748 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:07,935 INFO L231 Difference]: Finished difference. Result has 210 places, 219 transitions, 670 flow [2022-09-16 11:59:07,936 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=670, PETRI_PLACES=210, PETRI_TRANSITIONS=219} [2022-09-16 11:59:07,938 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 23 predicate places. [2022-09-16 11:59:07,938 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 219 transitions, 670 flow [2022-09-16 11:59:07,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:07,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:07,939 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:07,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:59:07,939 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:07,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:07,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1375063558, now seen corresponding path program 1 times [2022-09-16 11:59:07,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:07,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562168043] [2022-09-16 11:59:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:07,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:08,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:08,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562168043] [2022-09-16 11:59:08,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562168043] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:08,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491889996] [2022-09-16 11:59:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:08,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:08,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:08,012 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:08,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:59:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:08,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:59:08,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:08,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-16 11:59:08,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:08,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491889996] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:08,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:08,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:59:08,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218696178] [2022-09-16 11:59:08,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:08,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:59:08,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:08,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:59:08,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:59:08,225 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 231 [2022-09-16 11:59:08,226 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 219 transitions, 670 flow. Second operand has 7 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,226 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:08,226 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 231 [2022-09-16 11:59:08,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:08,736 INFO L130 PetriNetUnfolder]: 547/3210 cut-off events. [2022-09-16 11:59:08,736 INFO L131 PetriNetUnfolder]: For 637/637 co-relation queries the response was YES. [2022-09-16 11:59:08,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5545 conditions, 3210 events. 547/3210 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 27277 event pairs, 384 based on Foata normal form. 0/2805 useless extension candidates. Maximal degree in co-relation 4905. Up to 988 conditions per place. [2022-09-16 11:59:08,763 INFO L137 encePairwiseOnDemand]: 217/231 looper letters, 107 selfloop transitions, 23 changer transitions 0/278 dead transitions. [2022-09-16 11:59:08,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 278 transitions, 1122 flow [2022-09-16 11:59:08,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:59:08,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-16 11:59:08,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2023 transitions. [2022-09-16 11:59:08,766 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7961432506887053 [2022-09-16 11:59:08,767 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2023 transitions. [2022-09-16 11:59:08,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2023 transitions. [2022-09-16 11:59:08,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:08,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2023 transitions. [2022-09-16 11:59:08,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 183.9090909090909) internal successors, (2023), 11 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,775 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,775 INFO L175 Difference]: Start difference. First operand has 210 places, 219 transitions, 670 flow. Second operand 11 states and 2023 transitions. [2022-09-16 11:59:08,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 278 transitions, 1122 flow [2022-09-16 11:59:08,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 278 transitions, 1120 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:08,781 INFO L231 Difference]: Finished difference. Result has 222 places, 226 transitions, 759 flow [2022-09-16 11:59:08,782 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=759, PETRI_PLACES=222, PETRI_TRANSITIONS=226} [2022-09-16 11:59:08,782 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 35 predicate places. [2022-09-16 11:59:08,782 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 226 transitions, 759 flow [2022-09-16 11:59:08,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.85714285714286) internal successors, (1252), 7 states have internal predecessors, (1252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:08,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:08,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:09,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:09,018 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:09,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:09,019 INFO L85 PathProgramCache]: Analyzing trace with hash -447889375, now seen corresponding path program 1 times [2022-09-16 11:59:09,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:09,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320111892] [2022-09-16 11:59:09,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:09,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:09,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:09,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320111892] [2022-09-16 11:59:09,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320111892] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:09,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:09,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:59:09,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314253077] [2022-09-16 11:59:09,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:09,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:59:09,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:09,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:59:09,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:09,081 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 231 [2022-09-16 11:59:09,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 226 transitions, 759 flow. Second operand has 8 states, 8 states have (on average 173.5) internal successors, (1388), 8 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:09,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 231 [2022-09-16 11:59:09,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:09,829 INFO L130 PetriNetUnfolder]: 1143/4267 cut-off events. [2022-09-16 11:59:09,829 INFO L131 PetriNetUnfolder]: For 1532/1616 co-relation queries the response was YES. [2022-09-16 11:59:09,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7820 conditions, 4267 events. 1143/4267 cut-off events. For 1532/1616 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 40617 event pairs, 718 based on Foata normal form. 84/3651 useless extension candidates. Maximal degree in co-relation 6515. Up to 1576 conditions per place. [2022-09-16 11:59:09,869 INFO L137 encePairwiseOnDemand]: 213/231 looper letters, 133 selfloop transitions, 30 changer transitions 0/310 dead transitions. [2022-09-16 11:59:09,869 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 310 transitions, 1330 flow [2022-09-16 11:59:09,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:59:09,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:59:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2853 transitions. [2022-09-16 11:59:09,873 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7719155844155844 [2022-09-16 11:59:09,873 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2853 transitions. [2022-09-16 11:59:09,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2853 transitions. [2022-09-16 11:59:09,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:09,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2853 transitions. [2022-09-16 11:59:09,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 178.3125) internal successors, (2853), 16 states have internal predecessors, (2853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 231.0) internal successors, (3927), 17 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,883 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 231.0) internal successors, (3927), 17 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,883 INFO L175 Difference]: Start difference. First operand has 222 places, 226 transitions, 759 flow. Second operand 16 states and 2853 transitions. [2022-09-16 11:59:09,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 310 transitions, 1330 flow [2022-09-16 11:59:09,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 310 transitions, 1325 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:59:09,890 INFO L231 Difference]: Finished difference. Result has 238 places, 235 transitions, 863 flow [2022-09-16 11:59:09,890 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=863, PETRI_PLACES=238, PETRI_TRANSITIONS=235} [2022-09-16 11:59:09,891 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 51 predicate places. [2022-09-16 11:59:09,891 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 235 transitions, 863 flow [2022-09-16 11:59:09,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 173.5) internal successors, (1388), 8 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:09,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:09,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:59:09,892 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:09,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:09,892 INFO L85 PathProgramCache]: Analyzing trace with hash -999668129, now seen corresponding path program 1 times [2022-09-16 11:59:09,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:09,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289937006] [2022-09-16 11:59:09,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:09,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:09,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:09,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:09,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289937006] [2022-09-16 11:59:09,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289937006] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:09,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:09,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:59:09,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360639581] [2022-09-16 11:59:09,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:09,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:09,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:09,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:09,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:59:09,938 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 192 out of 231 [2022-09-16 11:59:09,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 235 transitions, 863 flow. Second operand has 6 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:09,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 192 of 231 [2022-09-16 11:59:09,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:10,935 INFO L130 PetriNetUnfolder]: 2891/7584 cut-off events. [2022-09-16 11:59:10,936 INFO L131 PetriNetUnfolder]: For 2160/2160 co-relation queries the response was YES. [2022-09-16 11:59:10,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14681 conditions, 7584 events. 2891/7584 cut-off events. For 2160/2160 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 73181 event pairs, 128 based on Foata normal form. 198/6468 useless extension candidates. Maximal degree in co-relation 13608. Up to 2493 conditions per place. [2022-09-16 11:59:10,992 INFO L137 encePairwiseOnDemand]: 224/231 looper letters, 30 selfloop transitions, 10 changer transitions 0/241 dead transitions. [2022-09-16 11:59:10,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 241 transitions, 954 flow [2022-09-16 11:59:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:59:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:59:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1185 transitions. [2022-09-16 11:59:10,995 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.854978354978355 [2022-09-16 11:59:10,995 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1185 transitions. [2022-09-16 11:59:10,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1185 transitions. [2022-09-16 11:59:10,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:10,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1185 transitions. [2022-09-16 11:59:10,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 197.5) internal successors, (1185), 6 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,999 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,999 INFO L175 Difference]: Start difference. First operand has 238 places, 235 transitions, 863 flow. Second operand 6 states and 1185 transitions. [2022-09-16 11:59:10,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 241 transitions, 954 flow [2022-09-16 11:59:11,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 241 transitions, 920 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 11:59:11,018 INFO L231 Difference]: Finished difference. Result has 235 places, 233 transitions, 840 flow [2022-09-16 11:59:11,019 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=840, PETRI_PLACES=235, PETRI_TRANSITIONS=233} [2022-09-16 11:59:11,019 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 48 predicate places. [2022-09-16 11:59:11,019 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 233 transitions, 840 flow [2022-09-16 11:59:11,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 194.66666666666666) internal successors, (1168), 6 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:11,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:11,020 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:11,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:59:11,020 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:11,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash 531082435, now seen corresponding path program 1 times [2022-09-16 11:59:11,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:11,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987701506] [2022-09-16 11:59:11,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:11,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:11,061 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:11,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:11,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987701506] [2022-09-16 11:59:11,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987701506] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:11,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155565894] [2022-09-16 11:59:11,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:11,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:11,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:11,076 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:11,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:59:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:11,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:11,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:11,280 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:11,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:11,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155565894] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:11,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:11,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:59:11,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638144992] [2022-09-16 11:59:11,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:11,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:59:11,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:11,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:59:11,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:59:11,319 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 231 [2022-09-16 11:59:11,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 233 transitions, 840 flow. Second operand has 12 states, 12 states have (on average 203.16666666666666) internal successors, (2438), 12 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:11,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:11,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 231 [2022-09-16 11:59:11,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:12,349 INFO L130 PetriNetUnfolder]: 1654/6209 cut-off events. [2022-09-16 11:59:12,349 INFO L131 PetriNetUnfolder]: For 1664/1664 co-relation queries the response was YES. [2022-09-16 11:59:12,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13051 conditions, 6209 events. 1654/6209 cut-off events. For 1664/1664 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 65266 event pairs, 242 based on Foata normal form. 135/5715 useless extension candidates. Maximal degree in co-relation 12977. Up to 950 conditions per place. [2022-09-16 11:59:12,442 INFO L137 encePairwiseOnDemand]: 224/231 looper letters, 73 selfloop transitions, 18 changer transitions 0/304 dead transitions. [2022-09-16 11:59:12,442 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 304 transitions, 1238 flow [2022-09-16 11:59:12,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:59:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:59:12,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3694 transitions. [2022-09-16 11:59:12,447 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8884078884078884 [2022-09-16 11:59:12,447 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3694 transitions. [2022-09-16 11:59:12,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3694 transitions. [2022-09-16 11:59:12,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:12,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3694 transitions. [2022-09-16 11:59:12,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 205.22222222222223) internal successors, (3694), 18 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:12,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 231.0) internal successors, (4389), 19 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:12,470 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 231.0) internal successors, (4389), 19 states have internal predecessors, (4389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:12,470 INFO L175 Difference]: Start difference. First operand has 235 places, 233 transitions, 840 flow. Second operand 18 states and 3694 transitions. [2022-09-16 11:59:12,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 304 transitions, 1238 flow [2022-09-16 11:59:12,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 304 transitions, 1218 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:12,478 INFO L231 Difference]: Finished difference. Result has 251 places, 245 transitions, 926 flow [2022-09-16 11:59:12,491 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=926, PETRI_PLACES=251, PETRI_TRANSITIONS=245} [2022-09-16 11:59:12,492 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 64 predicate places. [2022-09-16 11:59:12,492 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 245 transitions, 926 flow [2022-09-16 11:59:12,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.16666666666666) internal successors, (2438), 12 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:12,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:12,493 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:12,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:12,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-09-16 11:59:12,694 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:12,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:12,695 INFO L85 PathProgramCache]: Analyzing trace with hash -716313107, now seen corresponding path program 1 times [2022-09-16 11:59:12,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:12,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985172252] [2022-09-16 11:59:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:12,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:12,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:12,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985172252] [2022-09-16 11:59:12,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985172252] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:12,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710411396] [2022-09-16 11:59:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:12,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:12,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:12,756 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:12,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:59:12,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:12,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:12,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:12,901 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:12,902 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:12,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710411396] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:12,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:12,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:59:12,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539575408] [2022-09-16 11:59:12,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:12,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:12,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:12,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:12,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:12,905 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 231 [2022-09-16 11:59:12,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 245 transitions, 926 flow. Second operand has 6 states, 6 states have (on average 202.83333333333334) internal successors, (1217), 6 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) [2022-09-16 11:59:12,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:12,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 231 [2022-09-16 11:59:12,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:13,903 INFO L130 PetriNetUnfolder]: 1526/5863 cut-off events. [2022-09-16 11:59:13,903 INFO L131 PetriNetUnfolder]: For 3245/3245 co-relation queries the response was YES. [2022-09-16 11:59:13,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13295 conditions, 5863 events. 1526/5863 cut-off events. For 3245/3245 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 60568 event pairs, 128 based on Foata normal form. 180/5438 useless extension candidates. Maximal degree in co-relation 13222. Up to 1616 conditions per place. [2022-09-16 11:59:14,115 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 34 selfloop transitions, 11 changer transitions 0/258 dead transitions. [2022-09-16 11:59:14,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 258 transitions, 1041 flow [2022-09-16 11:59:14,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:14,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:14,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1437 transitions. [2022-09-16 11:59:14,116 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8886827458256029 [2022-09-16 11:59:14,117 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1437 transitions. [2022-09-16 11:59:14,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1437 transitions. [2022-09-16 11:59:14,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:14,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1437 transitions. [2022-09-16 11:59:14,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.28571428571428) internal successors, (1437), 7 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:14,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:14,120 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:14,120 INFO L175 Difference]: Start difference. First operand has 251 places, 245 transitions, 926 flow. Second operand 7 states and 1437 transitions. [2022-09-16 11:59:14,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 258 transitions, 1041 flow [2022-09-16 11:59:14,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 258 transitions, 1009 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:14,133 INFO L231 Difference]: Finished difference. Result has 247 places, 241 transitions, 889 flow [2022-09-16 11:59:14,133 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=889, PETRI_PLACES=247, PETRI_TRANSITIONS=241} [2022-09-16 11:59:14,134 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 60 predicate places. [2022-09-16 11:59:14,134 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 241 transitions, 889 flow [2022-09-16 11:59:14,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.83333333333334) internal successors, (1217), 6 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) [2022-09-16 11:59:14,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:14,135 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:14,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-09-16 11:59:14,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:14,371 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:14,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:14,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1854253484, now seen corresponding path program 1 times [2022-09-16 11:59:14,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:14,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969380352] [2022-09-16 11:59:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:14,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:59:14,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:14,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969380352] [2022-09-16 11:59:14,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969380352] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:14,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474070590] [2022-09-16 11:59:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:14,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:14,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:14,427 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:14,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:59:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:14,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:59:14,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:14,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:14,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:14,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474070590] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:14,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:14,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 11:59:14,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734297957] [2022-09-16 11:59:14,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:14,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:59:14,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:14,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:59:14,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:59:14,926 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 231 [2022-09-16 11:59:14,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 241 transitions, 889 flow. Second operand has 23 states, 23 states have (on average 165.17391304347825) internal successors, (3799), 23 states have internal predecessors, (3799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:14,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:14,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 231 [2022-09-16 11:59:14,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:16,819 INFO L130 PetriNetUnfolder]: 1360/7155 cut-off events. [2022-09-16 11:59:16,820 INFO L131 PetriNetUnfolder]: For 2503/13316 co-relation queries the response was YES. [2022-09-16 11:59:16,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13865 conditions, 7155 events. 1360/7155 cut-off events. For 2503/13316 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 76775 event pairs, 180 based on Foata normal form. 255/6947 useless extension candidates. Maximal degree in co-relation 13775. Up to 503 conditions per place. [2022-09-16 11:59:17,006 INFO L137 encePairwiseOnDemand]: 205/231 looper letters, 247 selfloop transitions, 72 changer transitions 0/456 dead transitions. [2022-09-16 11:59:17,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 456 transitions, 2280 flow [2022-09-16 11:59:17,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-09-16 11:59:17,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-09-16 11:59:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 6030 transitions. [2022-09-16 11:59:17,012 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7251082251082251 [2022-09-16 11:59:17,012 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 6030 transitions. [2022-09-16 11:59:17,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 6030 transitions. [2022-09-16 11:59:17,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:17,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 6030 transitions. [2022-09-16 11:59:17,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 167.5) internal successors, (6030), 36 states have internal predecessors, (6030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:17,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 231.0) internal successors, (8547), 37 states have internal predecessors, (8547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:17,030 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 231.0) internal successors, (8547), 37 states have internal predecessors, (8547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:17,030 INFO L175 Difference]: Start difference. First operand has 247 places, 241 transitions, 889 flow. Second operand 36 states and 6030 transitions. [2022-09-16 11:59:17,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 456 transitions, 2280 flow [2022-09-16 11:59:17,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 456 transitions, 2266 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:17,044 INFO L231 Difference]: Finished difference. Result has 286 places, 277 transitions, 1286 flow [2022-09-16 11:59:17,044 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1286, PETRI_PLACES=286, PETRI_TRANSITIONS=277} [2022-09-16 11:59:17,046 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 99 predicate places. [2022-09-16 11:59:17,046 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 277 transitions, 1286 flow [2022-09-16 11:59:17,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 165.17391304347825) internal successors, (3799), 23 states have internal predecessors, (3799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:17,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:17,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:17,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:17,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:17,264 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:17,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:17,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1372095813, now seen corresponding path program 1 times [2022-09-16 11:59:17,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:17,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511763337] [2022-09-16 11:59:17,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:17,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:17,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:17,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:17,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511763337] [2022-09-16 11:59:17,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511763337] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:17,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235910957] [2022-09-16 11:59:17,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:17,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:17,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:17,454 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:17,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:59:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:17,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:17,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:17,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:59:17,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:17,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235910957] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:17,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:17,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-09-16 11:59:17,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153103890] [2022-09-16 11:59:17,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:17,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:17,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:17,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:59:17,657 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 231 [2022-09-16 11:59:17,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 277 transitions, 1286 flow. Second operand has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:17,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:17,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 231 [2022-09-16 11:59:17,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:19,501 INFO L130 PetriNetUnfolder]: 2472/9469 cut-off events. [2022-09-16 11:59:19,501 INFO L131 PetriNetUnfolder]: For 7117/16890 co-relation queries the response was YES. [2022-09-16 11:59:19,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19354 conditions, 9469 events. 2472/9469 cut-off events. For 7117/16890 co-relation queries the response was YES. Maximal size of possible extension queue 611. Compared 112652 event pairs, 548 based on Foata normal form. 336/8546 useless extension candidates. Maximal degree in co-relation 19155. Up to 1706 conditions per place. [2022-09-16 11:59:19,605 INFO L137 encePairwiseOnDemand]: 223/231 looper letters, 54 selfloop transitions, 15 changer transitions 6/309 dead transitions. [2022-09-16 11:59:19,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 309 transitions, 1576 flow [2022-09-16 11:59:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:19,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1361 transitions. [2022-09-16 11:59:19,607 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8416821273964131 [2022-09-16 11:59:19,607 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1361 transitions. [2022-09-16 11:59:19,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1361 transitions. [2022-09-16 11:59:19,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:19,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1361 transitions. [2022-09-16 11:59:19,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 194.42857142857142) internal successors, (1361), 7 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:19,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:19,610 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:19,610 INFO L175 Difference]: Start difference. First operand has 286 places, 277 transitions, 1286 flow. Second operand 7 states and 1361 transitions. [2022-09-16 11:59:19,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 309 transitions, 1576 flow [2022-09-16 11:59:19,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 309 transitions, 1514 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-09-16 11:59:19,628 INFO L231 Difference]: Finished difference. Result has 281 places, 273 transitions, 1241 flow [2022-09-16 11:59:19,629 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1241, PETRI_PLACES=281, PETRI_TRANSITIONS=273} [2022-09-16 11:59:19,629 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 94 predicate places. [2022-09-16 11:59:19,629 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 273 transitions, 1241 flow [2022-09-16 11:59:19,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 191.83333333333334) internal successors, (1151), 6 states have internal predecessors, (1151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:19,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:19,630 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:19,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:19,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-16 11:59:19,843 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:19,844 INFO L85 PathProgramCache]: Analyzing trace with hash -195693933, now seen corresponding path program 2 times [2022-09-16 11:59:19,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:19,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736788368] [2022-09-16 11:59:19,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:19,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:19,933 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:19,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:19,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736788368] [2022-09-16 11:59:19,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736788368] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:19,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319586845] [2022-09-16 11:59:19,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:19,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:19,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:19,935 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:19,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:59:20,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:20,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:20,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:20,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:59:20,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:20,340 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:59:20,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319586845] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:20,340 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:20,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-09-16 11:59:20,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341840985] [2022-09-16 11:59:20,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:20,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:59:20,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:20,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:59:20,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:59:20,344 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 231 [2022-09-16 11:59:20,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 273 transitions, 1241 flow. Second operand has 16 states, 16 states have (on average 197.125) internal successors, (3154), 16 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:20,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:20,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 231 [2022-09-16 11:59:20,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:23,630 INFO L130 PetriNetUnfolder]: 7144/18065 cut-off events. [2022-09-16 11:59:23,630 INFO L131 PetriNetUnfolder]: For 8628/8718 co-relation queries the response was YES. [2022-09-16 11:59:23,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39367 conditions, 18065 events. 7144/18065 cut-off events. For 8628/8718 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 200586 event pairs, 275 based on Foata normal form. 229/16083 useless extension candidates. Maximal degree in co-relation 37711. Up to 3306 conditions per place. [2022-09-16 11:59:23,753 INFO L137 encePairwiseOnDemand]: 222/231 looper letters, 99 selfloop transitions, 23 changer transitions 45/361 dead transitions. [2022-09-16 11:59:23,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 361 transitions, 1729 flow [2022-09-16 11:59:23,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:59:23,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:59:23,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4370 transitions. [2022-09-16 11:59:23,757 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8598976780794962 [2022-09-16 11:59:23,757 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4370 transitions. [2022-09-16 11:59:23,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4370 transitions. [2022-09-16 11:59:23,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:23,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4370 transitions. [2022-09-16 11:59:23,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 198.63636363636363) internal successors, (4370), 22 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:23,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 231.0) internal successors, (5313), 23 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:23,765 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 231.0) internal successors, (5313), 23 states have internal predecessors, (5313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:23,765 INFO L175 Difference]: Start difference. First operand has 281 places, 273 transitions, 1241 flow. Second operand 22 states and 4370 transitions. [2022-09-16 11:59:23,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 361 transitions, 1729 flow [2022-09-16 11:59:23,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 361 transitions, 1691 flow, removed 0 selfloop flow, removed 10 redundant places. [2022-09-16 11:59:23,800 INFO L231 Difference]: Finished difference. Result has 289 places, 232 transitions, 978 flow [2022-09-16 11:59:23,801 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=978, PETRI_PLACES=289, PETRI_TRANSITIONS=232} [2022-09-16 11:59:23,801 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2022-09-16 11:59:23,801 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 232 transitions, 978 flow [2022-09-16 11:59:23,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 197.125) internal successors, (3154), 16 states have internal predecessors, (3154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:23,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:23,802 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:23,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:24,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-16 11:59:24,015 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:24,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:24,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1400038278, now seen corresponding path program 1 times [2022-09-16 11:59:24,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:24,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883445787] [2022-09-16 11:59:24,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:24,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:24,071 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-09-16 11:59:24,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:24,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883445787] [2022-09-16 11:59:24,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883445787] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:24,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876011897] [2022-09-16 11:59:24,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:24,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:24,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:24,072 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:24,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:59:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:24,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:24,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:24,189 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-09-16 11:59:24,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:24,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876011897] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:24,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:24,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:59:24,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473928234] [2022-09-16 11:59:24,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:24,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:24,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:24,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:24,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:24,192 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 231 [2022-09-16 11:59:24,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 232 transitions, 978 flow. Second operand has 6 states, 6 states have (on average 202.66666666666666) internal successors, (1216), 6 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:24,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:24,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 231 [2022-09-16 11:59:24,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:24,665 INFO L130 PetriNetUnfolder]: 321/2213 cut-off events. [2022-09-16 11:59:24,665 INFO L131 PetriNetUnfolder]: For 1114/1134 co-relation queries the response was YES. [2022-09-16 11:59:24,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4888 conditions, 2213 events. 321/2213 cut-off events. For 1114/1134 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17053 event pairs, 40 based on Foata normal form. 30/2203 useless extension candidates. Maximal degree in co-relation 4564. Up to 275 conditions per place. [2022-09-16 11:59:24,697 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 31 selfloop transitions, 8 changer transitions 0/246 dead transitions. [2022-09-16 11:59:24,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 246 transitions, 1098 flow [2022-09-16 11:59:24,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:24,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1436 transitions. [2022-09-16 11:59:24,699 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8880643166357453 [2022-09-16 11:59:24,699 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1436 transitions. [2022-09-16 11:59:24,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1436 transitions. [2022-09-16 11:59:24,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:24,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1436 transitions. [2022-09-16 11:59:24,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.14285714285714) internal successors, (1436), 7 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:24,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:24,702 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:24,702 INFO L175 Difference]: Start difference. First operand has 289 places, 232 transitions, 978 flow. Second operand 7 states and 1436 transitions. [2022-09-16 11:59:24,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 246 transitions, 1098 flow [2022-09-16 11:59:24,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 246 transitions, 919 flow, removed 15 selfloop flow, removed 29 redundant places. [2022-09-16 11:59:24,710 INFO L231 Difference]: Finished difference. Result has 235 places, 230 transitions, 809 flow [2022-09-16 11:59:24,710 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=809, PETRI_PLACES=235, PETRI_TRANSITIONS=230} [2022-09-16 11:59:24,710 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 48 predicate places. [2022-09-16 11:59:24,710 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 230 transitions, 809 flow [2022-09-16 11:59:24,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 202.66666666666666) internal successors, (1216), 6 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:24,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:24,711 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:24,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:24,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:59:24,939 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2022-09-16 11:59:24,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:24,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1825359392, now seen corresponding path program 2 times [2022-09-16 11:59:24,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:24,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151879699] [2022-09-16 11:59:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:24,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:24,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:59:25,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:25,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151879699] [2022-09-16 11:59:25,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151879699] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:25,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191158299] [2022-09-16 11:59:25,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:25,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:25,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:25,100 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:25,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:59:25,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:25,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:25,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:25,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-09-16 11:59:25,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-09-16 11:59:25,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191158299] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:25,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:25,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-09-16 11:59:25,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540234366] [2022-09-16 11:59:25,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:25,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:59:25,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:25,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:59:25,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:59:25,502 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 231 [2022-09-16 11:59:25,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 230 transitions, 809 flow. Second operand has 19 states, 19 states have (on average 163.05263157894737) internal successors, (3098), 19 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:25,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:25,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 231 [2022-09-16 11:59:25,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:27,236 INFO L130 PetriNetUnfolder]: 973/5314 cut-off events. [2022-09-16 11:59:27,236 INFO L131 PetriNetUnfolder]: For 1587/1677 co-relation queries the response was YES. [2022-09-16 11:59:27,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10575 conditions, 5314 events. 973/5314 cut-off events. For 1587/1677 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 50711 event pairs, 152 based on Foata normal form. 66/5065 useless extension candidates. Maximal degree in co-relation 8579. Up to 360 conditions per place. [2022-09-16 11:59:27,315 INFO L137 encePairwiseOnDemand]: 205/231 looper letters, 0 selfloop transitions, 0 changer transitions 376/376 dead transitions. [2022-09-16 11:59:27,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 376 transitions, 1829 flow [2022-09-16 11:59:27,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-09-16 11:59:27,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-09-16 11:59:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6173 transitions. [2022-09-16 11:59:27,320 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.703235361130098 [2022-09-16 11:59:27,321 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6173 transitions. [2022-09-16 11:59:27,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6173 transitions. [2022-09-16 11:59:27,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:27,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6173 transitions. [2022-09-16 11:59:27,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 162.44736842105263) internal successors, (6173), 38 states have internal predecessors, (6173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:27,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 231.0) internal successors, (9009), 39 states have internal predecessors, (9009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:27,337 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 231.0) internal successors, (9009), 39 states have internal predecessors, (9009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:27,337 INFO L175 Difference]: Start difference. First operand has 235 places, 230 transitions, 809 flow. Second operand 38 states and 6173 transitions. [2022-09-16 11:59:27,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 376 transitions, 1829 flow [2022-09-16 11:59:27,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 376 transitions, 1803 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-09-16 11:59:27,349 INFO L231 Difference]: Finished difference. Result has 265 places, 0 transitions, 0 flow [2022-09-16 11:59:27,349 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=788, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=0, PETRI_PLACES=265, PETRI_TRANSITIONS=0} [2022-09-16 11:59:27,350 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 78 predicate places. [2022-09-16 11:59:27,350 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 0 transitions, 0 flow [2022-09-16 11:59:27,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 163.05263157894737) internal successors, (3098), 19 states have internal predecessors, (3098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:27,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2022-09-16 11:59:27,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 19 remaining) [2022-09-16 11:59:27,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2022-09-16 11:59:27,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2022-09-16 11:59:27,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2022-09-16 11:59:27,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2022-09-16 11:59:27,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2022-09-16 11:59:27,354 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2022-09-16 11:59:27,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:27,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:59:27,592 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:27,596 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:59:27,596 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:59:27,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:59:27 BasicIcfg [2022-09-16 11:59:27,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:59:27,600 INFO L158 Benchmark]: Toolchain (without parser) took 25012.77ms. Allocated memory was 220.2MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 191.2MB in the beginning and 3.1GB in the end (delta: -2.9GB). Peak memory consumption was 978.6MB. Max. memory is 8.0GB. [2022-09-16 11:59:27,601 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 220.2MB. Free memory is still 179.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:59:27,601 INFO L158 Benchmark]: CACSL2BoogieTranslator took 308.86ms. Allocated memory is still 220.2MB. Free memory was 191.0MB in the beginning and 192.5MB in the end (delta: -1.5MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. [2022-09-16 11:59:27,601 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.17ms. Allocated memory is still 220.2MB. Free memory was 192.5MB in the beginning and 190.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:59:27,601 INFO L158 Benchmark]: Boogie Preprocessor took 23.60ms. Allocated memory is still 220.2MB. Free memory was 190.4MB in the beginning and 189.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:59:27,601 INFO L158 Benchmark]: RCFGBuilder took 490.11ms. Allocated memory is still 220.2MB. Free memory was 188.8MB in the beginning and 170.5MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-09-16 11:59:27,601 INFO L158 Benchmark]: TraceAbstraction took 24121.87ms. Allocated memory was 220.2MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 169.9MB in the beginning and 3.1GB in the end (delta: -2.9GB). Peak memory consumption was 959.1MB. Max. memory is 8.0GB. [2022-09-16 11:59:27,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 220.2MB. Free memory is still 179.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 308.86ms. Allocated memory is still 220.2MB. Free memory was 191.0MB in the beginning and 192.5MB in the end (delta: -1.5MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 64.17ms. Allocated memory is still 220.2MB. Free memory was 192.5MB in the beginning and 190.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.60ms. Allocated memory is still 220.2MB. Free memory was 190.4MB in the beginning and 189.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 490.11ms. Allocated memory is still 220.2MB. Free memory was 188.8MB in the beginning and 170.5MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 24121.87ms. Allocated memory was 220.2MB in the beginning and 4.0GB in the end (delta: 3.8GB). Free memory was 169.9MB in the beginning and 3.1GB in the end (delta: -2.9GB). Peak memory consumption was 959.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 47]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 63]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 102]: 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 7 procedures, 263 locations, 19 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: 24.0s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3292 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3292 mSDsluCounter, 589 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1090 mSDsCounter, 436 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3398 IncrementalHoareTripleChecker+Invalid, 3834 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 436 mSolverCounterUnsat, 122 mSDtfsCounter, 3398 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2144 GetRequests, 1825 SyntacticMatches, 12 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1286occurred in iteration=12, InterpolantAutomatonStates: 232, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2903 NumberOfCodeBlocks, 2777 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 3541 ConstructedInterpolants, 0 QuantifiedInterpolants, 7485 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2569 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 411/759 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:59:27,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...