/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-three-array-max.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:01:11,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:01:11,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:01:11,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:01:11,330 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:01:11,331 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:01:11,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:01:11,334 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:01:11,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:01:11,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:01:11,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:01:11,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:01:11,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:01:11,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:01:11,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:01:11,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:01:11,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:01:11,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:01:11,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:01:11,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:01:11,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:01:11,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:01:11,362 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:01:11,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:01:11,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:01:11,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:01:11,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:01:11,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:01:11,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:01:11,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:01:11,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:01:11,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:01:11,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:01:11,371 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:01:11,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:01:11,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:01:11,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:01:11,373 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:01:11,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:01:11,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:01:11,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:01:11,375 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 12:01:11,396 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:01:11,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:01:11,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:01:11,397 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:01:11,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:01:11,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:01:11,398 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:01:11,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:01:11,398 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:01:11,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:01:11,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:01:11,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:01:11,398 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:01:11,398 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:01:11,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:01:11,399 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:01:11,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:01:11,399 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:01:11,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:01:11,399 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:01:11,399 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:01:11,399 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:01:11,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:01:11,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:01:11,400 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:01:11,400 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:01:11,400 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:01:11,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:01:11,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:01:11,400 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:01:11,400 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:01:11,401 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:01:11,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:01:11,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:01:11,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:01:11,607 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:01:11,608 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:01:11,609 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2022-09-16 12:01:11,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4217b5fa/6a501969ac364eadaea8693a402e3bf4/FLAG858b952ea [2022-09-16 12:01:12,168 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:01:12,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2022-09-16 12:01:12,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4217b5fa/6a501969ac364eadaea8693a402e3bf4/FLAG858b952ea [2022-09-16 12:01:12,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4217b5fa/6a501969ac364eadaea8693a402e3bf4 [2022-09-16 12:01:12,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:01:12,673 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:01:12,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:01:12,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:01:12,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:01:12,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f6a645c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12, skipping insertion in model container [2022-09-16 12:01:12,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:01:12,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:01:12,895 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-three-array-max.wvr.c[2823,2836] [2022-09-16 12:01:12,901 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:01:12,908 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:01:12,932 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-three-array-max.wvr.c[2823,2836] [2022-09-16 12:01:12,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:01:12,952 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:01:12,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12 WrapperNode [2022-09-16 12:01:12,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:01:12,953 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:01:12,953 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:01:12,954 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:01:12,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:13,008 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 284 [2022-09-16 12:01:13,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:01:13,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:01:13,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:01:13,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:01:13,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:13,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:13,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:13,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:13,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:13,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:13,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:13,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:01:13,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:01:13,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:01:13,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:01:13,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:13,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:01:13,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:13,109 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 12:01:13,114 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 12:01:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:01:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:01:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:01:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:01:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 12:01:13,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 12:01:13,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 12:01:13,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 12:01:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 12:01:13,145 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 12:01:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:01:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 12:01:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 12:01:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 12:01:13,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:01:13,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:01:13,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:01:13,147 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 12:01:13,275 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:01:13,277 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:01:13,779 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:01:14,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:01:14,011 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 12:01:14,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:01:14 BoogieIcfgContainer [2022-09-16 12:01:14,014 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:01:14,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:01:14,016 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:01:14,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:01:14,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:01:12" (1/3) ... [2022-09-16 12:01:14,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44537501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:01:14, skipping insertion in model container [2022-09-16 12:01:14,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (2/3) ... [2022-09-16 12:01:14,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44537501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:01:14, skipping insertion in model container [2022-09-16 12:01:14,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:01:14" (3/3) ... [2022-09-16 12:01:14,022 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2022-09-16 12:01:14,039 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:01:14,039 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-09-16 12:01:14,039 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:01:14,171 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 12:01:14,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 390 transitions, 804 flow [2022-09-16 12:01:14,307 INFO L130 PetriNetUnfolder]: 31/387 cut-off events. [2022-09-16 12:01:14,308 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 12:01:14,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 387 events. 31/387 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 414 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 294. Up to 3 conditions per place. [2022-09-16 12:01:14,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 390 transitions, 804 flow [2022-09-16 12:01:14,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 362 transitions, 742 flow [2022-09-16 12:01:14,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:01:14,337 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;@8c74088, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:01:14,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-09-16 12:01:14,348 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2022-09-16 12:01:14,348 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:01:14,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:14,349 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] [2022-09-16 12:01:14,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:14,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:14,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1133252855, now seen corresponding path program 1 times [2022-09-16 12:01:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:14,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824926116] [2022-09-16 12:01:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:14,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:14,646 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 12:01:14,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:14,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824926116] [2022-09-16 12:01:14,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824926116] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:14,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:14,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:01:14,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679991378] [2022-09-16 12:01:14,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:14,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:01:14,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:14,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:01:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:01:14,710 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-09-16 12:01:14,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 362 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 320.5) internal successors, (1282), 4 states have internal predecessors, (1282), 0 states have call successors, (0), 0 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 12:01:14,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:14,720 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-09-16 12:01:14,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:15,121 INFO L130 PetriNetUnfolder]: 159/882 cut-off events. [2022-09-16 12:01:15,121 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-09-16 12:01:15,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 882 events. 159/882 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3208 event pairs, 74 based on Foata normal form. 117/750 useless extension candidates. Maximal degree in co-relation 536. Up to 150 conditions per place. [2022-09-16 12:01:15,133 INFO L137 encePairwiseOnDemand]: 351/390 looper letters, 76 selfloop transitions, 14 changer transitions 11/383 dead transitions. [2022-09-16 12:01:15,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 383 transitions, 982 flow [2022-09-16 12:01:15,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:01:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:01:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1722 transitions. [2022-09-16 12:01:15,151 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8830769230769231 [2022-09-16 12:01:15,152 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1722 transitions. [2022-09-16 12:01:15,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1722 transitions. [2022-09-16 12:01:15,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:15,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1722 transitions. [2022-09-16 12:01:15,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 344.4) internal successors, (1722), 5 states have internal predecessors, (1722), 0 states have call successors, (0), 0 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 12:01:15,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 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 12:01:15,176 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 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 12:01:15,178 INFO L175 Difference]: Start difference. First operand has 342 places, 362 transitions, 742 flow. Second operand 5 states and 1722 transitions. [2022-09-16 12:01:15,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 383 transitions, 982 flow [2022-09-16 12:01:15,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 383 transitions, 958 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 12:01:15,192 INFO L231 Difference]: Finished difference. Result has 341 places, 343 transitions, 774 flow [2022-09-16 12:01:15,195 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=774, PETRI_PLACES=341, PETRI_TRANSITIONS=343} [2022-09-16 12:01:15,198 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, -1 predicate places. [2022-09-16 12:01:15,198 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 343 transitions, 774 flow [2022-09-16 12:01:15,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 320.5) internal successors, (1282), 4 states have internal predecessors, (1282), 0 states have call successors, (0), 0 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 12:01:15,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:15,200 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] [2022-09-16 12:01:15,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:01:15,200 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:15,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:15,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1598332872, now seen corresponding path program 1 times [2022-09-16 12:01:15,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:15,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423533323] [2022-09-16 12:01:15,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:15,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:15,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:15,301 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 12:01:15,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:15,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423533323] [2022-09-16 12:01:15,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423533323] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:15,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282234101] [2022-09-16 12:01:15,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:15,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:15,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:15,308 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 12:01:15,310 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 12:01:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:15,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:01:15,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:15,518 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 12:01:15,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:15,572 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 12:01:15,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282234101] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:15,572 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:15,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 12:01:15,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581709174] [2022-09-16 12:01:15,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:15,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 12:01:15,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:15,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 12:01:15,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 12:01:15,580 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-09-16 12:01:15,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 343 transitions, 774 flow. Second operand has 12 states, 12 states have (on average 321.6666666666667) internal successors, (3860), 12 states have internal predecessors, (3860), 0 states have call successors, (0), 0 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 12:01:15,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:15,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-09-16 12:01:15,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:16,499 INFO L130 PetriNetUnfolder]: 396/2034 cut-off events. [2022-09-16 12:01:16,499 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-09-16 12:01:16,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2872 conditions, 2034 events. 396/2034 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11448 event pairs, 185 based on Foata normal form. 9/1473 useless extension candidates. Maximal degree in co-relation 1936. Up to 141 conditions per place. [2022-09-16 12:01:16,524 INFO L137 encePairwiseOnDemand]: 367/390 looper letters, 154 selfloop transitions, 62 changer transitions 0/498 dead transitions. [2022-09-16 12:01:16,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 498 transitions, 1618 flow [2022-09-16 12:01:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:01:16,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:01:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5967 transitions. [2022-09-16 12:01:16,538 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-09-16 12:01:16,538 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5967 transitions. [2022-09-16 12:01:16,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5967 transitions. [2022-09-16 12:01:16,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:16,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5967 transitions. [2022-09-16 12:01:16,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 331.5) internal successors, (5967), 18 states have internal predecessors, (5967), 0 states have call successors, (0), 0 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 12:01:16,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 390.0) internal successors, (7410), 19 states have internal predecessors, (7410), 0 states have call successors, (0), 0 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 12:01:16,578 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 390.0) internal successors, (7410), 19 states have internal predecessors, (7410), 0 states have call successors, (0), 0 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 12:01:16,578 INFO L175 Difference]: Start difference. First operand has 341 places, 343 transitions, 774 flow. Second operand 18 states and 5967 transitions. [2022-09-16 12:01:16,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 498 transitions, 1618 flow [2022-09-16 12:01:16,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 498 transitions, 1610 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:01:16,594 INFO L231 Difference]: Finished difference. Result has 350 places, 385 transitions, 1136 flow [2022-09-16 12:01:16,595 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1136, PETRI_PLACES=350, PETRI_TRANSITIONS=385} [2022-09-16 12:01:16,595 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 8 predicate places. [2022-09-16 12:01:16,596 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 385 transitions, 1136 flow [2022-09-16 12:01:16,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 321.6666666666667) internal successors, (3860), 12 states have internal predecessors, (3860), 0 states have call successors, (0), 0 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 12:01:16,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:16,599 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] [2022-09-16 12:01:16,628 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 12:01:16,811 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 12:01:16,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:16,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:16,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1991289503, now seen corresponding path program 1 times [2022-09-16 12:01:16,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:16,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719893197] [2022-09-16 12:01:16,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:16,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:16,927 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 12:01:16,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:16,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719893197] [2022-09-16 12:01:16,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719893197] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:16,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468222033] [2022-09-16 12:01:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:16,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:16,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:16,930 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 12:01:16,931 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 12:01:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:17,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:01:17,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:17,080 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 12:01:17,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:01:17,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468222033] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:17,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:01:17,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:01:17,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028618282] [2022-09-16 12:01:17,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:17,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:01:17,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:17,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:01:17,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:01:17,089 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-09-16 12:01:17,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 385 transitions, 1136 flow. Second operand has 6 states, 6 states have (on average 321.3333333333333) internal successors, (1928), 6 states have internal predecessors, (1928), 0 states have call successors, (0), 0 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 12:01:17,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:17,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-09-16 12:01:17,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:17,639 INFO L130 PetriNetUnfolder]: 396/2022 cut-off events. [2022-09-16 12:01:17,639 INFO L131 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-09-16 12:01:17,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 2022 events. 396/2022 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11351 event pairs, 185 based on Foata normal form. 12/1464 useless extension candidates. Maximal degree in co-relation 2297. Up to 492 conditions per place. [2022-09-16 12:01:17,667 INFO L137 encePairwiseOnDemand]: 373/390 looper letters, 77 selfloop transitions, 43 changer transitions 0/402 dead transitions. [2022-09-16 12:01:17,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 402 transitions, 1365 flow [2022-09-16 12:01:17,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:01:17,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:01:17,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2323 transitions. [2022-09-16 12:01:17,673 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8509157509157509 [2022-09-16 12:01:17,673 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2323 transitions. [2022-09-16 12:01:17,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2323 transitions. [2022-09-16 12:01:17,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:17,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2323 transitions. [2022-09-16 12:01:17,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 331.85714285714283) internal successors, (2323), 7 states have internal predecessors, (2323), 0 states have call successors, (0), 0 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 12:01:17,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 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 12:01:17,722 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 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 12:01:17,722 INFO L175 Difference]: Start difference. First operand has 350 places, 385 transitions, 1136 flow. Second operand 7 states and 2323 transitions. [2022-09-16 12:01:17,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 402 transitions, 1365 flow [2022-09-16 12:01:17,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 402 transitions, 1249 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-09-16 12:01:17,740 INFO L231 Difference]: Finished difference. Result has 344 places, 373 transitions, 1025 flow [2022-09-16 12:01:17,740 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1025, PETRI_PLACES=344, PETRI_TRANSITIONS=373} [2022-09-16 12:01:17,743 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 2 predicate places. [2022-09-16 12:01:17,744 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 373 transitions, 1025 flow [2022-09-16 12:01:17,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.3333333333333) internal successors, (1928), 6 states have internal predecessors, (1928), 0 states have call successors, (0), 0 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 12:01:17,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:17,745 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] [2022-09-16 12:01:17,780 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 12:01:17,970 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 12:01:17,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:17,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:17,971 INFO L85 PathProgramCache]: Analyzing trace with hash -89243447, now seen corresponding path program 2 times [2022-09-16 12:01:17,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:17,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368930957] [2022-09-16 12:01:17,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:17,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:18,135 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 12:01:18,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:18,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368930957] [2022-09-16 12:01:18,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368930957] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:18,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348968798] [2022-09-16 12:01:18,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:01:18,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:18,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:18,138 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 12:01:18,140 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 12:01:18,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:01:18,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:01:18,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 12:01:18,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:18,381 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 12:01:18,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:18,519 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 12:01:18,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348968798] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:18,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:18,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 12:01:18,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272271829] [2022-09-16 12:01:18,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:18,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:01:18,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:18,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:01:18,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:01:18,526 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 390 [2022-09-16 12:01:18,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 373 transitions, 1025 flow. Second operand has 18 states, 18 states have (on average 295.72222222222223) internal successors, (5323), 18 states have internal predecessors, (5323), 0 states have call successors, (0), 0 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 12:01:18,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:18,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 390 [2022-09-16 12:01:18,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:20,880 INFO L130 PetriNetUnfolder]: 3074/8288 cut-off events. [2022-09-16 12:01:20,881 INFO L131 PetriNetUnfolder]: For 528/528 co-relation queries the response was YES. [2022-09-16 12:01:20,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13178 conditions, 8288 events. 3074/8288 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 65870 event pairs, 1939 based on Foata normal form. 6/5060 useless extension candidates. Maximal degree in co-relation 10765. Up to 707 conditions per place. [2022-09-16 12:01:20,961 INFO L137 encePairwiseOnDemand]: 363/390 looper letters, 260 selfloop transitions, 81 changer transitions 0/596 dead transitions. [2022-09-16 12:01:20,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 596 transitions, 2256 flow [2022-09-16 12:01:20,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 12:01:20,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 12:01:20,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7355 transitions. [2022-09-16 12:01:20,977 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7857905982905983 [2022-09-16 12:01:20,977 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7355 transitions. [2022-09-16 12:01:20,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7355 transitions. [2022-09-16 12:01:20,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:20,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7355 transitions. [2022-09-16 12:01:20,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 306.4583333333333) internal successors, (7355), 24 states have internal predecessors, (7355), 0 states have call successors, (0), 0 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 12:01:21,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 390.0) internal successors, (9750), 25 states have internal predecessors, (9750), 0 states have call successors, (0), 0 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 12:01:21,018 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 390.0) internal successors, (9750), 25 states have internal predecessors, (9750), 0 states have call successors, (0), 0 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 12:01:21,018 INFO L175 Difference]: Start difference. First operand has 344 places, 373 transitions, 1025 flow. Second operand 24 states and 7355 transitions. [2022-09-16 12:01:21,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 596 transitions, 2256 flow [2022-09-16 12:01:21,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 596 transitions, 2165 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 12:01:21,030 INFO L231 Difference]: Finished difference. Result has 356 places, 389 transitions, 1188 flow [2022-09-16 12:01:21,031 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1188, PETRI_PLACES=356, PETRI_TRANSITIONS=389} [2022-09-16 12:01:21,031 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 14 predicate places. [2022-09-16 12:01:21,032 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 389 transitions, 1188 flow [2022-09-16 12:01:21,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 295.72222222222223) internal successors, (5323), 18 states have internal predecessors, (5323), 0 states have call successors, (0), 0 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 12:01:21,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:21,034 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, 1, 1, 1, 1, 1] [2022-09-16 12:01:21,057 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 12:01:21,257 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 12:01:21,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:21,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:21,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1957827463, now seen corresponding path program 1 times [2022-09-16 12:01:21,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:21,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706006205] [2022-09-16 12:01:21,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:21,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:21,416 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 12:01:21,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:21,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706006205] [2022-09-16 12:01:21,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706006205] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:21,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:21,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 12:01:21,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589889724] [2022-09-16 12:01:21,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:21,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 12:01:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:21,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 12:01:21,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:01:21,420 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 390 [2022-09-16 12:01:21,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 389 transitions, 1188 flow. Second operand has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 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 12:01:21,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:21,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 390 [2022-09-16 12:01:21,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:22,728 INFO L130 PetriNetUnfolder]: 2635/7140 cut-off events. [2022-09-16 12:01:22,729 INFO L131 PetriNetUnfolder]: For 549/549 co-relation queries the response was YES. [2022-09-16 12:01:22,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 7140 events. 2635/7140 cut-off events. For 549/549 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 55282 event pairs, 1662 based on Foata normal form. 3/4389 useless extension candidates. Maximal degree in co-relation 1810. Up to 3888 conditions per place. [2022-09-16 12:01:22,782 INFO L137 encePairwiseOnDemand]: 372/390 looper letters, 120 selfloop transitions, 25 changer transitions 0/393 dead transitions. [2022-09-16 12:01:22,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 393 transitions, 1482 flow [2022-09-16 12:01:22,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 12:01:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 12:01:22,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2167 transitions. [2022-09-16 12:01:22,788 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.694551282051282 [2022-09-16 12:01:22,788 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2167 transitions. [2022-09-16 12:01:22,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2167 transitions. [2022-09-16 12:01:22,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:22,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2167 transitions. [2022-09-16 12:01:22,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 270.875) internal successors, (2167), 8 states have internal predecessors, (2167), 0 states have call successors, (0), 0 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 12:01:22,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 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 12:01:22,797 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 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 12:01:22,797 INFO L175 Difference]: Start difference. First operand has 356 places, 389 transitions, 1188 flow. Second operand 8 states and 2167 transitions. [2022-09-16 12:01:22,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 393 transitions, 1482 flow [2022-09-16 12:01:22,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 393 transitions, 1318 flow, removed 12 selfloop flow, removed 16 redundant places. [2022-09-16 12:01:22,807 INFO L231 Difference]: Finished difference. Result has 348 places, 387 transitions, 1072 flow [2022-09-16 12:01:22,808 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1072, PETRI_PLACES=348, PETRI_TRANSITIONS=387} [2022-09-16 12:01:22,810 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 6 predicate places. [2022-09-16 12:01:22,810 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 387 transitions, 1072 flow [2022-09-16 12:01:22,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 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 12:01:22,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:22,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:22,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 12:01:22,812 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:22,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:22,812 INFO L85 PathProgramCache]: Analyzing trace with hash -870973157, now seen corresponding path program 1 times [2022-09-16 12:01:22,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:22,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671331298] [2022-09-16 12:01:22,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:22,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:23,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:23,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:23,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671331298] [2022-09-16 12:01:23,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671331298] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:23,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597705435] [2022-09-16 12:01:23,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:23,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:23,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:23,143 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 12:01:23,143 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 12:01:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:23,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 32 conjunts are in the unsatisfiable core [2022-09-16 12:01:23,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:23,309 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:01:23,396 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:01:23,494 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:01:23,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:01:23,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 12:01:23,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 12:01:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:23,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:23,689 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_146) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2022-09-16 12:01:23,706 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc32#1.base| v_ArrVal_146) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2022-09-16 12:01:24,400 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:24,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-09-16 12:01:24,412 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:24,412 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-09-16 12:01:24,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-09-16 12:01:24,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-09-16 12:01:24,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597705435] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:24,595 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:24,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2022-09-16 12:01:24,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328897071] [2022-09-16 12:01:24,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:24,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-09-16 12:01:24,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:24,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-09-16 12:01:24,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=934, Unknown=9, NotChecked=126, Total=1190 [2022-09-16 12:01:24,602 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 390 [2022-09-16 12:01:24,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 387 transitions, 1072 flow. Second operand has 35 states, 35 states have (on average 243.28571428571428) internal successors, (8515), 35 states have internal predecessors, (8515), 0 states have call successors, (0), 0 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 12:01:24,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:24,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 390 [2022-09-16 12:01:24,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:33,762 INFO L130 PetriNetUnfolder]: 19663/47628 cut-off events. [2022-09-16 12:01:33,762 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2022-09-16 12:01:33,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74198 conditions, 47628 events. 19663/47628 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 515992 event pairs, 10968 based on Foata normal form. 0/31188 useless extension candidates. Maximal degree in co-relation 54480. Up to 6402 conditions per place. [2022-09-16 12:01:34,287 INFO L137 encePairwiseOnDemand]: 345/390 looper letters, 347 selfloop transitions, 81 changer transitions 0/648 dead transitions. [2022-09-16 12:01:34,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 648 transitions, 2539 flow [2022-09-16 12:01:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-16 12:01:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-16 12:01:34,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 9266 transitions. [2022-09-16 12:01:34,308 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6421344421344422 [2022-09-16 12:01:34,309 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 9266 transitions. [2022-09-16 12:01:34,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 9266 transitions. [2022-09-16 12:01:34,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:34,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 9266 transitions. [2022-09-16 12:01:34,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 250.43243243243242) internal successors, (9266), 37 states have internal predecessors, (9266), 0 states have call successors, (0), 0 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 12:01:34,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 390.0) internal successors, (14820), 38 states have internal predecessors, (14820), 0 states have call successors, (0), 0 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 12:01:34,361 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 390.0) internal successors, (14820), 38 states have internal predecessors, (14820), 0 states have call successors, (0), 0 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 12:01:34,361 INFO L175 Difference]: Start difference. First operand has 348 places, 387 transitions, 1072 flow. Second operand 37 states and 9266 transitions. [2022-09-16 12:01:34,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 648 transitions, 2539 flow [2022-09-16 12:01:34,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 648 transitions, 2485 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 12:01:34,376 INFO L231 Difference]: Finished difference. Result has 398 places, 442 transitions, 1474 flow [2022-09-16 12:01:34,377 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1474, PETRI_PLACES=398, PETRI_TRANSITIONS=442} [2022-09-16 12:01:34,379 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 56 predicate places. [2022-09-16 12:01:34,379 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 442 transitions, 1474 flow [2022-09-16 12:01:34,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 243.28571428571428) internal successors, (8515), 35 states have internal predecessors, (8515), 0 states have call successors, (0), 0 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 12:01:34,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:34,383 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:34,413 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 12:01:34,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:34,600 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:34,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:34,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1230363251, now seen corresponding path program 1 times [2022-09-16 12:01:34,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:34,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522985710] [2022-09-16 12:01:34,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:34,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:34,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:34,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:01:34,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:34,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522985710] [2022-09-16 12:01:34,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522985710] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:34,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:34,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:01:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779753256] [2022-09-16 12:01:34,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:34,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:01:34,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:34,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:01:34,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:01:34,650 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-09-16 12:01:34,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 442 transitions, 1474 flow. Second operand has 4 states, 4 states have (on average 310.5) internal successors, (1242), 4 states have internal predecessors, (1242), 0 states have call successors, (0), 0 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 12:01:34,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:34,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-09-16 12:01:34,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:36,676 INFO L130 PetriNetUnfolder]: 2239/9294 cut-off events. [2022-09-16 12:01:36,676 INFO L131 PetriNetUnfolder]: For 944/944 co-relation queries the response was YES. [2022-09-16 12:01:36,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14257 conditions, 9294 events. 2239/9294 cut-off events. For 944/944 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 88240 event pairs, 1110 based on Foata normal form. 36/6300 useless extension candidates. Maximal degree in co-relation 13812. Up to 2287 conditions per place. [2022-09-16 12:01:36,794 INFO L137 encePairwiseOnDemand]: 377/390 looper letters, 86 selfloop transitions, 10 changer transitions 0/466 dead transitions. [2022-09-16 12:01:36,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 466 transitions, 1701 flow [2022-09-16 12:01:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 12:01:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 12:01:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1327 transitions. [2022-09-16 12:01:36,803 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8506410256410256 [2022-09-16 12:01:36,803 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1327 transitions. [2022-09-16 12:01:36,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1327 transitions. [2022-09-16 12:01:36,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:36,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1327 transitions. [2022-09-16 12:01:36,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.75) internal successors, (1327), 4 states have internal predecessors, (1327), 0 states have call successors, (0), 0 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 12:01:36,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 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 12:01:36,813 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 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 12:01:36,813 INFO L175 Difference]: Start difference. First operand has 398 places, 442 transitions, 1474 flow. Second operand 4 states and 1327 transitions. [2022-09-16 12:01:36,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 466 transitions, 1701 flow [2022-09-16 12:01:36,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 466 transitions, 1695 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 12:01:36,827 INFO L231 Difference]: Finished difference. Result has 400 places, 440 transitions, 1499 flow [2022-09-16 12:01:36,828 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1499, PETRI_PLACES=400, PETRI_TRANSITIONS=440} [2022-09-16 12:01:36,828 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 58 predicate places. [2022-09-16 12:01:36,828 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 440 transitions, 1499 flow [2022-09-16 12:01:36,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 310.5) internal successors, (1242), 4 states have internal predecessors, (1242), 0 states have call successors, (0), 0 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 12:01:36,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:36,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:36,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 12:01:36,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:36,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:36,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1909301833, now seen corresponding path program 2 times [2022-09-16 12:01:36,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:36,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955417865] [2022-09-16 12:01:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:36,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:37,005 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:37,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:37,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955417865] [2022-09-16 12:01:37,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955417865] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:37,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951877619] [2022-09-16 12:01:37,006 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:01:37,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:37,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:37,008 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 12:01:37,009 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 12:01:37,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 12:01:37,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:01:37,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 12:01:37,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:37,457 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:37,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:37,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:37,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951877619] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:37,796 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:37,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-09-16 12:01:37,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476846063] [2022-09-16 12:01:37,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:37,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-16 12:01:37,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:37,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-16 12:01:37,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2022-09-16 12:01:37,805 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 390 [2022-09-16 12:01:37,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 440 transitions, 1499 flow. Second operand has 32 states, 32 states have (on average 299.09375) internal successors, (9571), 32 states have internal predecessors, (9571), 0 states have call successors, (0), 0 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 12:01:37,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:37,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 390 [2022-09-16 12:01:37,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:42,865 INFO L130 PetriNetUnfolder]: 7385/18970 cut-off events. [2022-09-16 12:01:42,866 INFO L131 PetriNetUnfolder]: For 1085/1085 co-relation queries the response was YES. [2022-09-16 12:01:42,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30849 conditions, 18970 events. 7385/18970 cut-off events. For 1085/1085 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 182163 event pairs, 4709 based on Foata normal form. 4/11338 useless extension candidates. Maximal degree in co-relation 26900. Up to 9190 conditions per place. [2022-09-16 12:01:43,065 INFO L137 encePairwiseOnDemand]: 364/390 looper letters, 103 selfloop transitions, 99 changer transitions 0/490 dead transitions. [2022-09-16 12:01:43,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 490 transitions, 2038 flow [2022-09-16 12:01:43,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-09-16 12:01:43,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-09-16 12:01:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 8717 transitions. [2022-09-16 12:01:43,076 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7707338638373121 [2022-09-16 12:01:43,076 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 8717 transitions. [2022-09-16 12:01:43,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 8717 transitions. [2022-09-16 12:01:43,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:43,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 8717 transitions. [2022-09-16 12:01:43,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 300.58620689655174) internal successors, (8717), 29 states have internal predecessors, (8717), 0 states have call successors, (0), 0 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 12:01:43,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 390.0) internal successors, (11700), 30 states have internal predecessors, (11700), 0 states have call successors, (0), 0 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 12:01:43,114 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 390.0) internal successors, (11700), 30 states have internal predecessors, (11700), 0 states have call successors, (0), 0 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 12:01:43,115 INFO L175 Difference]: Start difference. First operand has 400 places, 440 transitions, 1499 flow. Second operand 29 states and 8717 transitions. [2022-09-16 12:01:43,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 490 transitions, 2038 flow [2022-09-16 12:01:43,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 490 transitions, 2024 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-09-16 12:01:43,130 INFO L231 Difference]: Finished difference. Result has 422 places, 444 transitions, 1754 flow [2022-09-16 12:01:43,131 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1754, PETRI_PLACES=422, PETRI_TRANSITIONS=444} [2022-09-16 12:01:43,132 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 80 predicate places. [2022-09-16 12:01:43,132 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 444 transitions, 1754 flow [2022-09-16 12:01:43,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 299.09375) internal successors, (9571), 32 states have internal predecessors, (9571), 0 states have call successors, (0), 0 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 12:01:43,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:43,223 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:43,253 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 12:01:43,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:43,424 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:43,425 INFO L85 PathProgramCache]: Analyzing trace with hash 767426956, now seen corresponding path program 1 times [2022-09-16 12:01:43,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:43,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541870331] [2022-09-16 12:01:43,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:43,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:01:43,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:43,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541870331] [2022-09-16 12:01:43,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541870331] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:43,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:43,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:01:43,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224002042] [2022-09-16 12:01:43,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:43,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:01:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:43,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:01:43,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:01:43,489 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-09-16 12:01:43,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 444 transitions, 1754 flow. Second operand has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 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 12:01:43,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:43,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-09-16 12:01:43,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:44,562 INFO L130 PetriNetUnfolder]: 1264/5562 cut-off events. [2022-09-16 12:01:44,562 INFO L131 PetriNetUnfolder]: For 837/837 co-relation queries the response was YES. [2022-09-16 12:01:44,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8820 conditions, 5562 events. 1264/5562 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 44680 event pairs, 629 based on Foata normal form. 12/3854 useless extension candidates. Maximal degree in co-relation 7327. Up to 1408 conditions per place. [2022-09-16 12:01:44,615 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 82 selfloop transitions, 8 changer transitions 0/468 dead transitions. [2022-09-16 12:01:44,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 468 transitions, 1980 flow [2022-09-16 12:01:44,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 12:01:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 12:01:44,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1323 transitions. [2022-09-16 12:01:44,617 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8480769230769231 [2022-09-16 12:01:44,617 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1323 transitions. [2022-09-16 12:01:44,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1323 transitions. [2022-09-16 12:01:44,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:44,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1323 transitions. [2022-09-16 12:01:44,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 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 12:01:44,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 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 12:01:44,622 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 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 12:01:44,622 INFO L175 Difference]: Start difference. First operand has 422 places, 444 transitions, 1754 flow. Second operand 4 states and 1323 transitions. [2022-09-16 12:01:44,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 468 transitions, 1980 flow [2022-09-16 12:01:44,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 468 transitions, 1849 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-09-16 12:01:44,638 INFO L231 Difference]: Finished difference. Result has 413 places, 442 transitions, 1627 flow [2022-09-16 12:01:44,639 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1627, PETRI_PLACES=413, PETRI_TRANSITIONS=442} [2022-09-16 12:01:44,640 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 71 predicate places. [2022-09-16 12:01:44,640 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 442 transitions, 1627 flow [2022-09-16 12:01:44,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 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 12:01:44,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:44,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:44,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 12:01:44,641 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:44,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:44,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1979567264, now seen corresponding path program 1 times [2022-09-16 12:01:44,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:44,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339203720] [2022-09-16 12:01:44,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:44,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:44,904 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:44,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:44,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339203720] [2022-09-16 12:01:44,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339203720] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:44,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526643659] [2022-09-16 12:01:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:44,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:44,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:44,907 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 12:01:44,908 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 12:01:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:45,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 32 conjunts are in the unsatisfiable core [2022-09-16 12:01:45,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:45,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:01:45,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:01:45,248 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:01:45,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:01:45,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 12:01:45,301 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-09-16 12:01:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:45,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:45,440 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_262) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-09-16 12:01:45,462 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc32#1.base| v_ArrVal_262) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-09-16 12:01:46,640 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:46,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-09-16 12:01:46,650 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:46,651 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-09-16 12:01:46,656 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-09-16 12:01:46,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-09-16 12:01:46,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526643659] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:46,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:46,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2022-09-16 12:01:46,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720138948] [2022-09-16 12:01:46,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:46,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-09-16 12:01:46,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:46,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-09-16 12:01:46,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=992, Unknown=9, NotChecked=130, Total=1260 [2022-09-16 12:01:46,822 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 390 [2022-09-16 12:01:46,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 442 transitions, 1627 flow. Second operand has 36 states, 36 states have (on average 243.38888888888889) internal successors, (8762), 36 states have internal predecessors, (8762), 0 states have call successors, (0), 0 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 12:01:46,827 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:46,827 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 390 [2022-09-16 12:01:46,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:53,773 INFO L130 PetriNetUnfolder]: 13912/33849 cut-off events. [2022-09-16 12:01:53,773 INFO L131 PetriNetUnfolder]: For 545/545 co-relation queries the response was YES. [2022-09-16 12:01:54,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53277 conditions, 33849 events. 13912/33849 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 344311 event pairs, 7769 based on Foata normal form. 0/22253 useless extension candidates. Maximal degree in co-relation 46579. Up to 10580 conditions per place. [2022-09-16 12:01:54,218 INFO L137 encePairwiseOnDemand]: 355/390 looper letters, 241 selfloop transitions, 52 changer transitions 0/519 dead transitions. [2022-09-16 12:01:54,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 519 transitions, 2409 flow [2022-09-16 12:01:54,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-16 12:01:54,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-09-16 12:01:54,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6475 transitions. [2022-09-16 12:01:54,226 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.638560157790927 [2022-09-16 12:01:54,226 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6475 transitions. [2022-09-16 12:01:54,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6475 transitions. [2022-09-16 12:01:54,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:54,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6475 transitions. [2022-09-16 12:01:54,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 249.03846153846155) internal successors, (6475), 26 states have internal predecessors, (6475), 0 states have call successors, (0), 0 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 12:01:54,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 390.0) internal successors, (10530), 27 states have internal predecessors, (10530), 0 states have call successors, (0), 0 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 12:01:54,249 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 390.0) internal successors, (10530), 27 states have internal predecessors, (10530), 0 states have call successors, (0), 0 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 12:01:54,249 INFO L175 Difference]: Start difference. First operand has 413 places, 442 transitions, 1627 flow. Second operand 26 states and 6475 transitions. [2022-09-16 12:01:54,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 519 transitions, 2409 flow [2022-09-16 12:01:54,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 519 transitions, 2392 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 12:01:54,265 INFO L231 Difference]: Finished difference. Result has 438 places, 445 transitions, 1767 flow [2022-09-16 12:01:54,266 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1767, PETRI_PLACES=438, PETRI_TRANSITIONS=445} [2022-09-16 12:01:54,266 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 96 predicate places. [2022-09-16 12:01:54,266 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 445 transitions, 1767 flow [2022-09-16 12:01:54,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 243.38888888888889) internal successors, (8762), 36 states have internal predecessors, (8762), 0 states have call successors, (0), 0 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 12:01:54,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:54,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:54,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:54,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:54,488 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:54,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:54,488 INFO L85 PathProgramCache]: Analyzing trace with hash 462319179, now seen corresponding path program 1 times [2022-09-16 12:01:54,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:54,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533225730] [2022-09-16 12:01:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:54,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:54,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:01:54,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:54,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533225730] [2022-09-16 12:01:54,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533225730] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:54,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:54,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:01:54,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083687372] [2022-09-16 12:01:54,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:54,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:01:54,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:54,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:01:54,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:01:54,547 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-09-16 12:01:54,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 445 transitions, 1767 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 12:01:54,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:54,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-09-16 12:01:54,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:55,654 INFO L130 PetriNetUnfolder]: 1337/5810 cut-off events. [2022-09-16 12:01:55,654 INFO L131 PetriNetUnfolder]: For 958/958 co-relation queries the response was YES. [2022-09-16 12:01:55,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9275 conditions, 5810 events. 1337/5810 cut-off events. For 958/958 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 46852 event pairs, 666 based on Foata normal form. 12/4016 useless extension candidates. Maximal degree in co-relation 7857. Up to 1548 conditions per place. [2022-09-16 12:01:55,712 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 81 selfloop transitions, 8 changer transitions 0/469 dead transitions. [2022-09-16 12:01:55,712 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 469 transitions, 1994 flow [2022-09-16 12:01:55,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 12:01:55,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 12:01:55,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1319 transitions. [2022-09-16 12:01:55,714 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8455128205128205 [2022-09-16 12:01:55,714 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1319 transitions. [2022-09-16 12:01:55,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1319 transitions. [2022-09-16 12:01:55,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:55,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1319 transitions. [2022-09-16 12:01:55,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 329.75) internal successors, (1319), 4 states have internal predecessors, (1319), 0 states have call successors, (0), 0 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 12:01:55,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 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 12:01:55,718 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 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 12:01:55,718 INFO L175 Difference]: Start difference. First operand has 438 places, 445 transitions, 1767 flow. Second operand 4 states and 1319 transitions. [2022-09-16 12:01:55,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 469 transitions, 1994 flow [2022-09-16 12:01:55,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 469 transitions, 1925 flow, removed 1 selfloop flow, removed 19 redundant places. [2022-09-16 12:01:55,733 INFO L231 Difference]: Finished difference. Result has 422 places, 445 transitions, 1725 flow [2022-09-16 12:01:55,734 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1725, PETRI_PLACES=422, PETRI_TRANSITIONS=445} [2022-09-16 12:01:55,734 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 80 predicate places. [2022-09-16 12:01:55,734 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 445 transitions, 1725 flow [2022-09-16 12:01:55,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 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 12:01:55,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:55,735 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:55,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 12:01:55,735 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:55,736 INFO L85 PathProgramCache]: Analyzing trace with hash -2137261565, now seen corresponding path program 1 times [2022-09-16 12:01:55,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:55,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945957099] [2022-09-16 12:01:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:55,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:56,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:56,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:56,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945957099] [2022-09-16 12:01:56,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945957099] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:56,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115224293] [2022-09-16 12:01:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:56,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:56,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:56,080 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 12:01:56,082 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 12:01:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:56,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 46 conjunts are in the unsatisfiable core [2022-09-16 12:01:56,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:56,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:01:56,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:01:56,410 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-09-16 12:01:56,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-09-16 12:01:56,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 12:01:56,544 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:01:56,545 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:01:56,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 12:01:56,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-09-16 12:01:56,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:56,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:56,913 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_322) c_~A~0.base) c_~A~0.offset) 2147483647)) is different from false [2022-09-16 12:01:56,923 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc32#1.base| v_ArrVal_322) c_~A~0.base) c_~A~0.offset) 2147483647)) is different from false [2022-09-16 12:01:57,504 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:57,504 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-09-16 12:01:57,512 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:57,512 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-09-16 12:01:57,516 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-09-16 12:01:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 12:01:57,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115224293] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:57,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:57,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 45 [2022-09-16 12:01:57,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818101194] [2022-09-16 12:01:57,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:57,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-09-16 12:01:57,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-09-16 12:01:57,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1703, Unknown=18, NotChecked=170, Total=2070 [2022-09-16 12:01:57,682 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 390 [2022-09-16 12:01:57,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 445 transitions, 1725 flow. Second operand has 46 states, 46 states have (on average 170.19565217391303) internal successors, (7829), 46 states have internal predecessors, (7829), 0 states have call successors, (0), 0 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 12:01:57,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:57,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 390 [2022-09-16 12:01:57,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:05,986 INFO L130 PetriNetUnfolder]: 14729/35760 cut-off events. [2022-09-16 12:02:05,986 INFO L131 PetriNetUnfolder]: For 673/673 co-relation queries the response was YES. [2022-09-16 12:02:06,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56851 conditions, 35760 events. 14729/35760 cut-off events. For 673/673 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 364543 event pairs, 8226 based on Foata normal form. 0/23522 useless extension candidates. Maximal degree in co-relation 47558. Up to 15351 conditions per place. [2022-09-16 12:02:06,512 INFO L137 encePairwiseOnDemand]: 328/390 looper letters, 310 selfloop transitions, 105 changer transitions 1/585 dead transitions. [2022-09-16 12:02:06,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 585 transitions, 2933 flow [2022-09-16 12:02:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-09-16 12:02:06,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-09-16 12:02:06,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9173 transitions. [2022-09-16 12:02:06,532 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.44378326076439284 [2022-09-16 12:02:06,532 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9173 transitions. [2022-09-16 12:02:06,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9173 transitions. [2022-09-16 12:02:06,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:06,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9173 transitions. [2022-09-16 12:02:06,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 173.0754716981132) internal successors, (9173), 53 states have internal predecessors, (9173), 0 states have call successors, (0), 0 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 12:02:06,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 390.0) internal successors, (21060), 54 states have internal predecessors, (21060), 0 states have call successors, (0), 0 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 12:02:06,568 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 390.0) internal successors, (21060), 54 states have internal predecessors, (21060), 0 states have call successors, (0), 0 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 12:02:06,568 INFO L175 Difference]: Start difference. First operand has 422 places, 445 transitions, 1725 flow. Second operand 53 states and 9173 transitions. [2022-09-16 12:02:06,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 585 transitions, 2933 flow [2022-09-16 12:02:06,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 585 transitions, 2924 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:02:06,589 INFO L231 Difference]: Finished difference. Result has 494 places, 484 transitions, 2201 flow [2022-09-16 12:02:06,589 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=2201, PETRI_PLACES=494, PETRI_TRANSITIONS=484} [2022-09-16 12:02:06,590 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 152 predicate places. [2022-09-16 12:02:06,590 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 484 transitions, 2201 flow [2022-09-16 12:02:06,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 170.19565217391303) internal successors, (7829), 46 states have internal predecessors, (7829), 0 states have call successors, (0), 0 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 12:02:06,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:06,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:06,621 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 12:02:06,819 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 12:02:06,820 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:02:06,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:06,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1830598075, now seen corresponding path program 1 times [2022-09-16 12:02:06,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:06,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41591999] [2022-09-16 12:02:06,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:06,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:06,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:07,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:07,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:07,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41591999] [2022-09-16 12:02:07,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41591999] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:07,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49379339] [2022-09-16 12:02:07,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:07,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:07,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:07,173 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 12:02:07,175 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 12:02:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:07,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 45 conjunts are in the unsatisfiable core [2022-09-16 12:02:07,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:07,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:02:07,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:02:07,480 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-09-16 12:02:07,481 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-09-16 12:02:07,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 12:02:07,604 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:02:07,604 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:02:07,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 12:02:07,662 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 12:02:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:07,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:02:07,984 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset) 2147483648))) is different from false [2022-09-16 12:02:07,995 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc32#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset) 2147483648))) is different from false [2022-09-16 12:02:08,659 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:02:08,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-09-16 12:02:08,667 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:02:08,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-09-16 12:02:08,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-09-16 12:02:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 12:02:08,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49379339] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:02:08,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:02:08,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 21] total 43 [2022-09-16 12:02:08,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830609409] [2022-09-16 12:02:08,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:02:08,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-09-16 12:02:08,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:08,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-09-16 12:02:08,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1541, Unknown=18, NotChecked=162, Total=1892 [2022-09-16 12:02:08,835 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2022-09-16 12:02:08,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 484 transitions, 2201 flow. Second operand has 44 states, 44 states have (on average 176.3181818181818) internal successors, (7758), 44 states have internal predecessors, (7758), 0 states have call successors, (0), 0 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 12:02:08,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:08,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2022-09-16 12:02:08,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:18,449 INFO L130 PetriNetUnfolder]: 14729/35746 cut-off events. [2022-09-16 12:02:18,450 INFO L131 PetriNetUnfolder]: For 1283/1283 co-relation queries the response was YES. [2022-09-16 12:02:18,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57274 conditions, 35746 events. 14729/35746 cut-off events. For 1283/1283 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 364563 event pairs, 8226 based on Foata normal form. 6/23556 useless extension candidates. Maximal degree in co-relation 51021. Up to 15406 conditions per place. [2022-09-16 12:02:19,113 INFO L137 encePairwiseOnDemand]: 332/390 looper letters, 318 selfloop transitions, 101 changer transitions 1/602 dead transitions. [2022-09-16 12:02:19,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 602 transitions, 3381 flow [2022-09-16 12:02:19,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-09-16 12:02:19,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-09-16 12:02:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 8633 transitions. [2022-09-16 12:02:19,124 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.46116452991452994 [2022-09-16 12:02:19,124 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 8633 transitions. [2022-09-16 12:02:19,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 8633 transitions. [2022-09-16 12:02:19,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:19,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 8633 transitions. [2022-09-16 12:02:19,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 179.85416666666666) internal successors, (8633), 48 states have internal predecessors, (8633), 0 states have call successors, (0), 0 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 12:02:19,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 390.0) internal successors, (19110), 49 states have internal predecessors, (19110), 0 states have call successors, (0), 0 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 12:02:19,156 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 390.0) internal successors, (19110), 49 states have internal predecessors, (19110), 0 states have call successors, (0), 0 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 12:02:19,156 INFO L175 Difference]: Start difference. First operand has 494 places, 484 transitions, 2201 flow. Second operand 48 states and 8633 transitions. [2022-09-16 12:02:19,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 602 transitions, 3381 flow [2022-09-16 12:02:19,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 602 transitions, 3264 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-09-16 12:02:19,181 INFO L231 Difference]: Finished difference. Result has 535 places, 501 transitions, 2447 flow [2022-09-16 12:02:19,182 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=2447, PETRI_PLACES=535, PETRI_TRANSITIONS=501} [2022-09-16 12:02:19,183 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 193 predicate places. [2022-09-16 12:02:19,183 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 501 transitions, 2447 flow [2022-09-16 12:02:19,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 176.3181818181818) internal successors, (7758), 44 states have internal predecessors, (7758), 0 states have call successors, (0), 0 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 12:02:19,185 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:19,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:19,211 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 12:02:19,407 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 12:02:19,408 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:02:19,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:19,408 INFO L85 PathProgramCache]: Analyzing trace with hash -590101487, now seen corresponding path program 1 times [2022-09-16 12:02:19,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:19,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703533842] [2022-09-16 12:02:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:19,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:19,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:02:19,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:19,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703533842] [2022-09-16 12:02:19,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703533842] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:02:19,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:02:19,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 12:02:19,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959968245] [2022-09-16 12:02:19,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:19,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:02:19,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:19,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:02:19,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 12:02:19,506 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 390 [2022-09-16 12:02:19,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 501 transitions, 2447 flow. Second operand has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 0 states have call successors, (0), 0 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 12:02:19,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:19,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 390 [2022-09-16 12:02:19,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:20,948 INFO L130 PetriNetUnfolder]: 1337/5782 cut-off events. [2022-09-16 12:02:20,949 INFO L131 PetriNetUnfolder]: For 2072/2072 co-relation queries the response was YES. [2022-09-16 12:02:20,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10345 conditions, 5782 events. 1337/5782 cut-off events. For 2072/2072 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 46638 event pairs, 666 based on Foata normal form. 12/4066 useless extension candidates. Maximal degree in co-relation 9799. Up to 2116 conditions per place. [2022-09-16 12:02:21,003 INFO L137 encePairwiseOnDemand]: 377/390 looper letters, 133 selfloop transitions, 19 changer transitions 0/511 dead transitions. [2022-09-16 12:02:21,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 511 transitions, 2789 flow [2022-09-16 12:02:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 12:02:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 12:02:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1606 transitions. [2022-09-16 12:02:21,005 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6863247863247863 [2022-09-16 12:02:21,005 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1606 transitions. [2022-09-16 12:02:21,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1606 transitions. [2022-09-16 12:02:21,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:21,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1606 transitions. [2022-09-16 12:02:21,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.6666666666667) internal successors, (1606), 6 states have internal predecessors, (1606), 0 states have call successors, (0), 0 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 12:02:21,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 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 12:02:21,010 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 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 12:02:21,010 INFO L175 Difference]: Start difference. First operand has 535 places, 501 transitions, 2447 flow. Second operand 6 states and 1606 transitions. [2022-09-16 12:02:21,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 511 transitions, 2789 flow [2022-09-16 12:02:21,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 511 transitions, 2636 flow, removed 12 selfloop flow, removed 30 redundant places. [2022-09-16 12:02:21,034 INFO L231 Difference]: Finished difference. Result has 515 places, 509 transitions, 2422 flow [2022-09-16 12:02:21,035 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2422, PETRI_PLACES=515, PETRI_TRANSITIONS=509} [2022-09-16 12:02:21,035 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 173 predicate places. [2022-09-16 12:02:21,035 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 509 transitions, 2422 flow [2022-09-16 12:02:21,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 0 states have call successors, (0), 0 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 12:02:21,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:21,036 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:02:21,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 12:02:21,036 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:02:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash 317891719, now seen corresponding path program 3 times [2022-09-16 12:02:21,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:21,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756612110] [2022-09-16 12:02:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:21,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-09-16 12:02:21,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:21,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756612110] [2022-09-16 12:02:21,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756612110] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:21,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761865847] [2022-09-16 12:02:21,344 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 12:02:21,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:21,348 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 12:02:21,351 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 12:02:21,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-16 12:02:21,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:02:21,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 46 conjunts are in the unsatisfiable core [2022-09-16 12:02:21,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:21,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:02:21,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:02:21,702 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-09-16 12:02:21,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-09-16 12:02:22,089 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:02:22,089 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:02:22,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 12:02:22,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 12:02:22,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 12:02:22,363 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 12:02:22,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:02:22,484 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_437 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_437) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2022-09-16 12:02:22,492 WARN L833 $PredicateComparison]: unable to prove that (or (not (< |c_ULTIMATE.start_create_fresh_int_array_~i~3#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (forall ((v_ArrVal_437 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_437) c_~B~0.base) c_~B~0.offset) 9223372039002259456)))) is different from false [2022-09-16 12:02:23,434 INFO L356 Elim1Store]: treesize reduction 20, result has 63.0 percent of original size [2022-09-16 12:02:23,435 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 46 [2022-09-16 12:02:23,444 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:02:23,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 45 [2022-09-16 12:02:23,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-09-16 12:02:23,879 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 5 not checked. [2022-09-16 12:02:23,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761865847] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:02:23,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:02:23,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 27, 27] total 65 [2022-09-16 12:02:23,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942220323] [2022-09-16 12:02:23,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:02:23,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-09-16 12:02:23,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:23,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-09-16 12:02:23,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=3748, Unknown=16, NotChecked=250, Total=4290 [2022-09-16 12:02:23,959 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 390 [2022-09-16 12:02:23,964 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 509 transitions, 2422 flow. Second operand has 66 states, 66 states have (on average 207.53030303030303) internal successors, (13697), 66 states have internal predecessors, (13697), 0 states have call successors, (0), 0 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 12:02:23,964 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:23,964 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 390 [2022-09-16 12:02:23,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand