/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-min-max-dec.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:56:05,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:56:05,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:56:05,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:56:05,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:56:05,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:56:05,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:56:05,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:56:05,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:56:05,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:56:05,545 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:56:05,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:56:05,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:56:05,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:56:05,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:56:05,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:56:05,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:56:05,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:56:05,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:56:05,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:56:05,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:56:05,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:56:05,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:56:05,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:56:05,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:56:05,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:56:05,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:56:05,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:56:05,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:56:05,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:56:05,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:56:05,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:56:05,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:56:05,565 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:56:05,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:56:05,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:56:05,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:56:05,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:56:05,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:56:05,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:56:05,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:56:05,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:56:05,608 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:56:05,609 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:56:05,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:56:05,609 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:56:05,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:56:05,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:56:05,610 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:56:05,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:56:05,610 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:56:05,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:56:05,611 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:56:05,611 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:56:05,611 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:56:05,611 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:56:05,611 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:56:05,611 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:56:05,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:56:05,611 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:56:05,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:56:05,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:56:05,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:56:05,612 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:56:05,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:56:05,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:56:05,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:56:05,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:56:05,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:56:05,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:56:05,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:56:05,613 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:56:05,613 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:56:05,613 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:56:05,800 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:56:05,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:56:05,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:56:05,823 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:56:05,827 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:56:05,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2022-09-16 11:56:05,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288379f18/ffa91afe43014b3f8500012d5f769413/FLAG31125d7f2 [2022-09-16 11:56:06,279 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:56:06,280 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2022-09-16 11:56:06,284 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288379f18/ffa91afe43014b3f8500012d5f769413/FLAG31125d7f2 [2022-09-16 11:56:06,293 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/288379f18/ffa91afe43014b3f8500012d5f769413 [2022-09-16 11:56:06,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:56:06,296 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:56:06,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:56:06,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:56:06,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:56:06,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ba858ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06, skipping insertion in model container [2022-09-16 11:56:06,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:56:06,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:56:06,479 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-min-max-dec.wvr.c[3019,3032] [2022-09-16 11:56:06,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:56:06,488 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:56:06,504 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-min-max-dec.wvr.c[3019,3032] [2022-09-16 11:56:06,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:56:06,521 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:56:06,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06 WrapperNode [2022-09-16 11:56:06,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:56:06,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:56:06,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:56:06,523 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:56:06,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,557 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 143 [2022-09-16 11:56:06,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:56:06,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:56:06,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:56:06,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:56:06,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:56:06,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:56:06,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:56:06,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:56:06,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06" (1/1) ... [2022-09-16 11:56:06,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:56:06,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:06,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:56:06,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:56:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:56:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:56:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:56:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:56:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:56:06,657 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:56:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:56:06,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:56:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:56:06,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:56:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:56:06,658 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:56:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:56:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:56:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:56:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:56:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:56:06,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:56:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:56:06,659 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:56:06,728 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:56:06,729 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:56:06,993 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:56:07,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:56:07,077 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:56:07,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:56:07 BoogieIcfgContainer [2022-09-16 11:56:07,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:56:07,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:56:07,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:56:07,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:56:07,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:56:06" (1/3) ... [2022-09-16 11:56:07,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68842f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:56:07, skipping insertion in model container [2022-09-16 11:56:07,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:56:06" (2/3) ... [2022-09-16 11:56:07,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68842f6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:56:07, skipping insertion in model container [2022-09-16 11:56:07,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:56:07" (3/3) ... [2022-09-16 11:56:07,088 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2022-09-16 11:56:07,100 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:56:07,101 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-09-16 11:56:07,101 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:56:07,187 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:56:07,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 191 transitions, 414 flow [2022-09-16 11:56:07,290 INFO L130 PetriNetUnfolder]: 12/187 cut-off events. [2022-09-16 11:56:07,291 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-16 11:56:07,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 187 events. 12/187 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 207 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2022-09-16 11:56:07,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 191 transitions, 414 flow [2022-09-16 11:56:07,306 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 164 transitions, 349 flow [2022-09-16 11:56:07,318 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:56:07,326 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@1a69fda3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:56:07,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-09-16 11:56:07,338 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2022-09-16 11:56:07,338 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:56:07,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:07,339 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 11:56:07,339 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:07,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:07,343 INFO L85 PathProgramCache]: Analyzing trace with hash 2043980005, now seen corresponding path program 1 times [2022-09-16 11:56:07,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:07,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121508808] [2022-09-16 11:56:07,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:07,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:07,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:07,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:07,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121508808] [2022-09-16 11:56:07,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121508808] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:07,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:07,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:56:07,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480688245] [2022-09-16 11:56:07,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:07,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:56:07,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:07,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:56:07,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:56:07,608 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 191 [2022-09-16 11:56:07,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 164 transitions, 349 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:07,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:07,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 191 [2022-09-16 11:56:07,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:08,047 INFO L130 PetriNetUnfolder]: 753/2208 cut-off events. [2022-09-16 11:56:08,047 INFO L131 PetriNetUnfolder]: For 332/332 co-relation queries the response was YES. [2022-09-16 11:56:08,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 2208 events. 753/2208 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 16811 event pairs, 544 based on Foata normal form. 268/1821 useless extension candidates. Maximal degree in co-relation 1545. Up to 525 conditions per place. [2022-09-16 11:56:08,075 INFO L137 encePairwiseOnDemand]: 176/191 looper letters, 46 selfloop transitions, 4 changer transitions 3/178 dead transitions. [2022-09-16 11:56:08,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 178 transitions, 498 flow [2022-09-16 11:56:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:56:08,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:56:08,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 827 transitions. [2022-09-16 11:56:08,091 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8659685863874346 [2022-09-16 11:56:08,092 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 827 transitions. [2022-09-16 11:56:08,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 827 transitions. [2022-09-16 11:56:08,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:08,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 827 transitions. [2022-09-16 11:56:08,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.4) internal successors, (827), 5 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:08,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:08,113 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:08,114 INFO L175 Difference]: Start difference. First operand has 166 places, 164 transitions, 349 flow. Second operand 5 states and 827 transitions. [2022-09-16 11:56:08,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 178 transitions, 498 flow [2022-09-16 11:56:08,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 178 transitions, 472 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:56:08,124 INFO L231 Difference]: Finished difference. Result has 164 places, 155 transitions, 342 flow [2022-09-16 11:56:08,126 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=164, PETRI_TRANSITIONS=155} [2022-09-16 11:56:08,129 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, -2 predicate places. [2022-09-16 11:56:08,130 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 155 transitions, 342 flow [2022-09-16 11:56:08,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:08,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:08,131 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 11:56:08,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:56:08,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:08,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:08,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1683143026, now seen corresponding path program 1 times [2022-09-16 11:56:08,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:08,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583113087] [2022-09-16 11:56:08,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:08,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:08,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:08,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:08,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583113087] [2022-09-16 11:56:08,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583113087] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:08,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775462689] [2022-09-16 11:56:08,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:08,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:08,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:08,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:08,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:56:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:08,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:56:08,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:08,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:08,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:56:08,484 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:08,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775462689] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:56:08,484 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:56:08,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:56:08,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089173821] [2022-09-16 11:56:08,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:56:08,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:56:08,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:08,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:56:08,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:56:08,490 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 191 [2022-09-16 11:56:08,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 155 transitions, 342 flow. Second operand has 12 states, 12 states have (on average 154.66666666666666) internal successors, (1856), 12 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:08,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:08,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 191 [2022-09-16 11:56:08,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:09,348 INFO L130 PetriNetUnfolder]: 1881/5432 cut-off events. [2022-09-16 11:56:09,348 INFO L131 PetriNetUnfolder]: For 221/221 co-relation queries the response was YES. [2022-09-16 11:56:09,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8402 conditions, 5432 events. 1881/5432 cut-off events. For 221/221 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 47067 event pairs, 1360 based on Foata normal form. 3/3819 useless extension candidates. Maximal degree in co-relation 6672. Up to 520 conditions per place. [2022-09-16 11:56:09,394 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 103 selfloop transitions, 18 changer transitions 0/246 dead transitions. [2022-09-16 11:56:09,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 246 transitions, 820 flow [2022-09-16 11:56:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:56:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:56:09,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2860 transitions. [2022-09-16 11:56:09,398 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8318789994182665 [2022-09-16 11:56:09,398 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2860 transitions. [2022-09-16 11:56:09,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2860 transitions. [2022-09-16 11:56:09,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:09,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2860 transitions. [2022-09-16 11:56:09,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 158.88888888888889) internal successors, (2860), 18 states have internal predecessors, (2860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:09,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 191.0) internal successors, (3629), 19 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:09,409 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 191.0) internal successors, (3629), 19 states have internal predecessors, (3629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:09,409 INFO L175 Difference]: Start difference. First operand has 164 places, 155 transitions, 342 flow. Second operand 18 states and 2860 transitions. [2022-09-16 11:56:09,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 246 transitions, 820 flow [2022-09-16 11:56:09,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 246 transitions, 818 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:56:09,415 INFO L231 Difference]: Finished difference. Result has 181 places, 167 transitions, 446 flow [2022-09-16 11:56:09,415 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=446, PETRI_PLACES=181, PETRI_TRANSITIONS=167} [2022-09-16 11:56:09,416 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 15 predicate places. [2022-09-16 11:56:09,416 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 167 transitions, 446 flow [2022-09-16 11:56:09,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 154.66666666666666) internal successors, (1856), 12 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:09,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:09,418 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 11:56:09,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:56:09,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:09,651 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:09,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:09,653 INFO L85 PathProgramCache]: Analyzing trace with hash -637825705, now seen corresponding path program 1 times [2022-09-16 11:56:09,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:09,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377093886] [2022-09-16 11:56:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:09,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:09,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:09,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377093886] [2022-09-16 11:56:09,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377093886] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:09,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641204156] [2022-09-16 11:56:09,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:09,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:09,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:09,748 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:09,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:56:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:09,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:56:09,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:09,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:09,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:56:09,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641204156] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:09,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:56:09,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:56:09,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073747524] [2022-09-16 11:56:09,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:09,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:56:09,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:56:09,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:56:09,844 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 191 [2022-09-16 11:56:09,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 167 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 154.33333333333334) internal successors, (926), 6 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:09,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:09,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 191 [2022-09-16 11:56:09,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:10,551 INFO L130 PetriNetUnfolder]: 1881/5428 cut-off events. [2022-09-16 11:56:10,551 INFO L131 PetriNetUnfolder]: For 257/257 co-relation queries the response was YES. [2022-09-16 11:56:10,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8420 conditions, 5428 events. 1881/5428 cut-off events. For 257/257 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 47073 event pairs, 1360 based on Foata normal form. 4/3807 useless extension candidates. Maximal degree in co-relation 6721. Up to 2064 conditions per place. [2022-09-16 11:56:10,599 INFO L137 encePairwiseOnDemand]: 186/191 looper letters, 47 selfloop transitions, 11 changer transitions 0/183 dead transitions. [2022-09-16 11:56:10,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 183 transitions, 585 flow [2022-09-16 11:56:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:56:10,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:56:10,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1114 transitions. [2022-09-16 11:56:10,602 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8332086761406133 [2022-09-16 11:56:10,602 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1114 transitions. [2022-09-16 11:56:10,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1114 transitions. [2022-09-16 11:56:10,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:10,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1114 transitions. [2022-09-16 11:56:10,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.14285714285714) internal successors, (1114), 7 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:10,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:10,607 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:10,607 INFO L175 Difference]: Start difference. First operand has 181 places, 167 transitions, 446 flow. Second operand 7 states and 1114 transitions. [2022-09-16 11:56:10,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 183 transitions, 585 flow [2022-09-16 11:56:10,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 183 transitions, 553 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:56:10,615 INFO L231 Difference]: Finished difference. Result has 177 places, 163 transitions, 409 flow [2022-09-16 11:56:10,615 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=409, PETRI_PLACES=177, PETRI_TRANSITIONS=163} [2022-09-16 11:56:10,617 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 11 predicate places. [2022-09-16 11:56:10,617 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 163 transitions, 409 flow [2022-09-16 11:56:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 154.33333333333334) internal successors, (926), 6 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:10,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:10,618 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] [2022-09-16 11:56:10,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 11:56:10,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:56:10,832 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:10,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:10,832 INFO L85 PathProgramCache]: Analyzing trace with hash 273093613, now seen corresponding path program 1 times [2022-09-16 11:56:10,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:10,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162454907] [2022-09-16 11:56:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:10,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:10,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:10,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162454907] [2022-09-16 11:56:10,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162454907] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:10,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:10,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:56:10,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399624637] [2022-09-16 11:56:10,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:10,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:56:10,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:10,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:56:10,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:56:10,872 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 191 [2022-09-16 11:56:10,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 163 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:10,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:10,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 191 [2022-09-16 11:56:10,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:13,638 INFO L130 PetriNetUnfolder]: 10936/20458 cut-off events. [2022-09-16 11:56:13,638 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2022-09-16 11:56:13,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37957 conditions, 20458 events. 10936/20458 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 177047 event pairs, 5005 based on Foata normal form. 0/14513 useless extension candidates. Maximal degree in co-relation 30357. Up to 9016 conditions per place. [2022-09-16 11:56:13,856 INFO L137 encePairwiseOnDemand]: 185/191 looper letters, 59 selfloop transitions, 4 changer transitions 0/201 dead transitions. [2022-09-16 11:56:13,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 201 transitions, 626 flow [2022-09-16 11:56:13,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:56:13,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:56:13,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 835 transitions. [2022-09-16 11:56:13,859 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8743455497382199 [2022-09-16 11:56:13,859 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 835 transitions. [2022-09-16 11:56:13,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 835 transitions. [2022-09-16 11:56:13,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:13,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 835 transitions. [2022-09-16 11:56:13,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 167.0) internal successors, (835), 5 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:13,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:13,864 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:13,864 INFO L175 Difference]: Start difference. First operand has 177 places, 163 transitions, 409 flow. Second operand 5 states and 835 transitions. [2022-09-16 11:56:13,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 201 transitions, 626 flow [2022-09-16 11:56:13,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 201 transitions, 612 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:56:13,869 INFO L231 Difference]: Finished difference. Result has 179 places, 166 transitions, 425 flow [2022-09-16 11:56:13,869 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=425, PETRI_PLACES=179, PETRI_TRANSITIONS=166} [2022-09-16 11:56:13,871 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 13 predicate places. [2022-09-16 11:56:13,871 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 166 transitions, 425 flow [2022-09-16 11:56:13,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:13,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:13,872 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] [2022-09-16 11:56:13,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:56:13,872 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:13,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1184244338, now seen corresponding path program 1 times [2022-09-16 11:56:13,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:13,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851927465] [2022-09-16 11:56:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:13,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:13,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:13,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:13,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851927465] [2022-09-16 11:56:13,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851927465] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:13,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:13,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:56:13,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249923402] [2022-09-16 11:56:13,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:13,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:56:13,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:13,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:56:13,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:56:13,943 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 191 [2022-09-16 11:56:13,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 166 transitions, 425 flow. Second operand has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:13,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:13,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 191 [2022-09-16 11:56:13,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:17,343 INFO L130 PetriNetUnfolder]: 19416/31233 cut-off events. [2022-09-16 11:56:17,343 INFO L131 PetriNetUnfolder]: For 2207/2507 co-relation queries the response was YES. [2022-09-16 11:56:17,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61103 conditions, 31233 events. 19416/31233 cut-off events. For 2207/2507 co-relation queries the response was YES. Maximal size of possible extension queue 1107. Compared 263740 event pairs, 8990 based on Foata normal form. 0/21473 useless extension candidates. Maximal degree in co-relation 48872. Up to 15931 conditions per place. [2022-09-16 11:56:17,604 INFO L137 encePairwiseOnDemand]: 185/191 looper letters, 58 selfloop transitions, 4 changer transitions 0/203 dead transitions. [2022-09-16 11:56:17,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 203 transitions, 637 flow [2022-09-16 11:56:17,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:56:17,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:56:17,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 834 transitions. [2022-09-16 11:56:17,607 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8732984293193717 [2022-09-16 11:56:17,607 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 834 transitions. [2022-09-16 11:56:17,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 834 transitions. [2022-09-16 11:56:17,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:17,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 834 transitions. [2022-09-16 11:56:17,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.8) internal successors, (834), 5 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:17,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:17,610 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:17,610 INFO L175 Difference]: Start difference. First operand has 179 places, 166 transitions, 425 flow. Second operand 5 states and 834 transitions. [2022-09-16 11:56:17,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 203 transitions, 637 flow [2022-09-16 11:56:17,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 203 transitions, 635 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:56:17,617 INFO L231 Difference]: Finished difference. Result has 185 places, 169 transitions, 453 flow [2022-09-16 11:56:17,617 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=185, PETRI_TRANSITIONS=169} [2022-09-16 11:56:17,619 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 19 predicate places. [2022-09-16 11:56:17,619 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 169 transitions, 453 flow [2022-09-16 11:56:17,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:17,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:17,621 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:56:17,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:56:17,621 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:17,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:17,621 INFO L85 PathProgramCache]: Analyzing trace with hash 790122497, now seen corresponding path program 1 times [2022-09-16 11:56:17,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:17,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470655003] [2022-09-16 11:56:17,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:17,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:17,680 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:17,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:17,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470655003] [2022-09-16 11:56:17,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470655003] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:17,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1876009413] [2022-09-16 11:56:17,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:17,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:17,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:17,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:17,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:56:17,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:17,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:56:17,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:17,832 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:56:17,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:56:17,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1876009413] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:17,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:56:17,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:56:17,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369192529] [2022-09-16 11:56:17,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:17,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:56:17,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:17,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:56:17,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:56:17,835 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2022-09-16 11:56:17,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 169 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:17,836 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:17,836 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2022-09-16 11:56:17,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:24,634 INFO L130 PetriNetUnfolder]: 30303/59967 cut-off events. [2022-09-16 11:56:24,634 INFO L131 PetriNetUnfolder]: For 8335/8975 co-relation queries the response was YES. [2022-09-16 11:56:24,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114215 conditions, 59967 events. 30303/59967 cut-off events. For 8335/8975 co-relation queries the response was YES. Maximal size of possible extension queue 1597. Compared 629118 event pairs, 23608 based on Foata normal form. 0/41713 useless extension candidates. Maximal degree in co-relation 106340. Up to 38005 conditions per place. [2022-09-16 11:56:25,183 INFO L137 encePairwiseOnDemand]: 182/191 looper letters, 77 selfloop transitions, 8 changer transitions 0/205 dead transitions. [2022-09-16 11:56:25,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 205 transitions, 709 flow [2022-09-16 11:56:25,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:56:25,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:56:25,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1198 transitions. [2022-09-16 11:56:25,185 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7840314136125655 [2022-09-16 11:56:25,185 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1198 transitions. [2022-09-16 11:56:25,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1198 transitions. [2022-09-16 11:56:25,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:25,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1198 transitions. [2022-09-16 11:56:25,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.75) internal successors, (1198), 8 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:25,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:25,192 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:25,192 INFO L175 Difference]: Start difference. First operand has 185 places, 169 transitions, 453 flow. Second operand 8 states and 1198 transitions. [2022-09-16 11:56:25,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 205 transitions, 709 flow [2022-09-16 11:56:25,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 205 transitions, 707 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:56:25,248 INFO L231 Difference]: Finished difference. Result has 194 places, 171 transitions, 485 flow [2022-09-16 11:56:25,248 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=485, PETRI_PLACES=194, PETRI_TRANSITIONS=171} [2022-09-16 11:56:25,248 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 28 predicate places. [2022-09-16 11:56:25,249 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 171 transitions, 485 flow [2022-09-16 11:56:25,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.71428571428572) internal successors, (999), 7 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:25,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:25,249 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] [2022-09-16 11:56:25,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:56:25,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:25,458 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:25,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:25,459 INFO L85 PathProgramCache]: Analyzing trace with hash 941608342, now seen corresponding path program 1 times [2022-09-16 11:56:25,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:25,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933047034] [2022-09-16 11:56:25,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:25,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:25,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:25,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:25,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933047034] [2022-09-16 11:56:25,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933047034] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:25,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:25,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:56:25,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546244397] [2022-09-16 11:56:25,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:25,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:56:25,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:56:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:56:25,537 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2022-09-16 11:56:25,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 171 transitions, 485 flow. Second operand has 7 states, 7 states have (on average 142.42857142857142) internal successors, (997), 7 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:25,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:25,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2022-09-16 11:56:25,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:31,116 INFO L130 PetriNetUnfolder]: 25786/48481 cut-off events. [2022-09-16 11:56:31,116 INFO L131 PetriNetUnfolder]: For 4522/4616 co-relation queries the response was YES. [2022-09-16 11:56:31,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92640 conditions, 48481 events. 25786/48481 cut-off events. For 4522/4616 co-relation queries the response was YES. Maximal size of possible extension queue 1653. Compared 494808 event pairs, 24477 based on Foata normal form. 94/36773 useless extension candidates. Maximal degree in co-relation 89273. Up to 34745 conditions per place. [2022-09-16 11:56:31,624 INFO L137 encePairwiseOnDemand]: 182/191 looper letters, 70 selfloop transitions, 8 changer transitions 0/201 dead transitions. [2022-09-16 11:56:31,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 201 transitions, 713 flow [2022-09-16 11:56:31,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:56:31,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:56:31,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1193 transitions. [2022-09-16 11:56:31,627 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7807591623036649 [2022-09-16 11:56:31,627 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1193 transitions. [2022-09-16 11:56:31,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1193 transitions. [2022-09-16 11:56:31,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:31,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1193 transitions. [2022-09-16 11:56:31,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 149.125) internal successors, (1193), 8 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:31,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:31,632 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:31,632 INFO L175 Difference]: Start difference. First operand has 194 places, 171 transitions, 485 flow. Second operand 8 states and 1193 transitions. [2022-09-16 11:56:31,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 201 transitions, 713 flow [2022-09-16 11:56:31,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 201 transitions, 703 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:56:31,649 INFO L231 Difference]: Finished difference. Result has 199 places, 172 transitions, 500 flow [2022-09-16 11:56:31,649 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=500, PETRI_PLACES=199, PETRI_TRANSITIONS=172} [2022-09-16 11:56:31,649 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 33 predicate places. [2022-09-16 11:56:31,650 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 172 transitions, 500 flow [2022-09-16 11:56:31,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.42857142857142) internal successors, (997), 7 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:31,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:31,650 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] [2022-09-16 11:56:31,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:56:31,650 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:31,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:31,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1515649965, now seen corresponding path program 1 times [2022-09-16 11:56:31,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:31,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040259841] [2022-09-16 11:56:31,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:31,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:31,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:31,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040259841] [2022-09-16 11:56:31,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040259841] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:31,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:31,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:56:31,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816529714] [2022-09-16 11:56:31,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:31,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:56:31,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:31,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:56:31,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:56:31,677 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 191 [2022-09-16 11:56:31,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 172 transitions, 500 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:31,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:31,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 191 [2022-09-16 11:56:31,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:32,846 INFO L130 PetriNetUnfolder]: 3211/10784 cut-off events. [2022-09-16 11:56:32,846 INFO L131 PetriNetUnfolder]: For 1072/1072 co-relation queries the response was YES. [2022-09-16 11:56:32,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18435 conditions, 10784 events. 3211/10784 cut-off events. For 1072/1072 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 114763 event pairs, 463 based on Foata normal form. 0/8660 useless extension candidates. Maximal degree in co-relation 17637. Up to 3707 conditions per place. [2022-09-16 11:56:32,911 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 22 selfloop transitions, 2 changer transitions 0/180 dead transitions. [2022-09-16 11:56:32,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 180 transitions, 568 flow [2022-09-16 11:56:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:56:32,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:56:32,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 514 transitions. [2022-09-16 11:56:32,912 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8970331588132635 [2022-09-16 11:56:32,913 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 514 transitions. [2022-09-16 11:56:32,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 514 transitions. [2022-09-16 11:56:32,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:32,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 514 transitions. [2022-09-16 11:56:32,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 171.33333333333334) internal successors, (514), 3 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:32,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:32,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:32,925 INFO L175 Difference]: Start difference. First operand has 199 places, 172 transitions, 500 flow. Second operand 3 states and 514 transitions. [2022-09-16 11:56:32,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 180 transitions, 568 flow [2022-09-16 11:56:32,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 180 transitions, 555 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:56:32,958 INFO L231 Difference]: Finished difference. Result has 197 places, 172 transitions, 495 flow [2022-09-16 11:56:32,959 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=495, PETRI_PLACES=197, PETRI_TRANSITIONS=172} [2022-09-16 11:56:32,960 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 31 predicate places. [2022-09-16 11:56:32,961 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 172 transitions, 495 flow [2022-09-16 11:56:32,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:32,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:32,961 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] [2022-09-16 11:56:32,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:56:32,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:32,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:32,962 INFO L85 PathProgramCache]: Analyzing trace with hash 259490909, now seen corresponding path program 1 times [2022-09-16 11:56:32,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:32,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485203652] [2022-09-16 11:56:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:32,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:33,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:33,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:33,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485203652] [2022-09-16 11:56:33,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485203652] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:33,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:33,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:56:33,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386915190] [2022-09-16 11:56:33,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:33,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:56:33,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:33,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:56:33,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:56:33,047 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 191 [2022-09-16 11:56:33,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 172 transitions, 495 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:33,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:33,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 191 [2022-09-16 11:56:33,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:34,167 INFO L130 PetriNetUnfolder]: 3487/10998 cut-off events. [2022-09-16 11:56:34,168 INFO L131 PetriNetUnfolder]: For 1763/1763 co-relation queries the response was YES. [2022-09-16 11:56:34,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20125 conditions, 10998 events. 3487/10998 cut-off events. For 1763/1763 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 114273 event pairs, 753 based on Foata normal form. 78/9583 useless extension candidates. Maximal degree in co-relation 19228. Up to 3706 conditions per place. [2022-09-16 11:56:34,387 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 23 selfloop transitions, 2 changer transitions 0/180 dead transitions. [2022-09-16 11:56:34,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 180 transitions, 568 flow [2022-09-16 11:56:34,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:56:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:56:34,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2022-09-16 11:56:34,389 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.893542757417103 [2022-09-16 11:56:34,389 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2022-09-16 11:56:34,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2022-09-16 11:56:34,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:34,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2022-09-16 11:56:34,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:34,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:34,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:34,392 INFO L175 Difference]: Start difference. First operand has 197 places, 172 transitions, 495 flow. Second operand 3 states and 512 transitions. [2022-09-16 11:56:34,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 180 transitions, 568 flow [2022-09-16 11:56:34,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 180 transitions, 562 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:56:34,414 INFO L231 Difference]: Finished difference. Result has 198 places, 172 transitions, 499 flow [2022-09-16 11:56:34,414 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=499, PETRI_PLACES=198, PETRI_TRANSITIONS=172} [2022-09-16 11:56:34,415 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 32 predicate places. [2022-09-16 11:56:34,416 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 172 transitions, 499 flow [2022-09-16 11:56:34,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:34,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:34,416 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:56:34,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:56:34,417 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:34,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:34,417 INFO L85 PathProgramCache]: Analyzing trace with hash -990639124, now seen corresponding path program 1 times [2022-09-16 11:56:34,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:34,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874519628] [2022-09-16 11:56:34,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:34,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:34,451 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:34,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:34,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874519628] [2022-09-16 11:56:34,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874519628] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:34,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33393962] [2022-09-16 11:56:34,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:34,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:34,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:34,480 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:34,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:56:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:34,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:56:34,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:56:34,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:56:34,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33393962] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:34,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:56:34,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:56:34,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162210101] [2022-09-16 11:56:34,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:34,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:56:34,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:34,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:56:34,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:56:34,646 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 191 [2022-09-16 11:56:34,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 172 transitions, 499 flow. Second operand has 7 states, 7 states have (on average 142.85714285714286) internal successors, (1000), 7 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:34,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:34,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 191 [2022-09-16 11:56:34,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:40,927 INFO L130 PetriNetUnfolder]: 28637/55133 cut-off events. [2022-09-16 11:56:40,927 INFO L131 PetriNetUnfolder]: For 21221/21299 co-relation queries the response was YES. [2022-09-16 11:56:41,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117592 conditions, 55133 events. 28637/55133 cut-off events. For 21221/21299 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 571607 event pairs, 23313 based on Foata normal form. 78/45827 useless extension candidates. Maximal degree in co-relation 116428. Up to 38437 conditions per place. [2022-09-16 11:56:41,527 INFO L137 encePairwiseOnDemand]: 182/191 looper letters, 65 selfloop transitions, 8 changer transitions 2/197 dead transitions. [2022-09-16 11:56:41,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 197 transitions, 722 flow [2022-09-16 11:56:41,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:56:41,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:56:41,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1188 transitions. [2022-09-16 11:56:41,531 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7774869109947644 [2022-09-16 11:56:41,531 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1188 transitions. [2022-09-16 11:56:41,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1188 transitions. [2022-09-16 11:56:41,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:41,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1188 transitions. [2022-09-16 11:56:41,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 148.5) internal successors, (1188), 8 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:41,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:41,535 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:41,535 INFO L175 Difference]: Start difference. First operand has 198 places, 172 transitions, 499 flow. Second operand 8 states and 1188 transitions. [2022-09-16 11:56:41,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 197 transitions, 722 flow [2022-09-16 11:56:41,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 197 transitions, 718 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:56:41,630 INFO L231 Difference]: Finished difference. Result has 205 places, 173 transitions, 522 flow [2022-09-16 11:56:41,630 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=495, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=522, PETRI_PLACES=205, PETRI_TRANSITIONS=173} [2022-09-16 11:56:41,630 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 39 predicate places. [2022-09-16 11:56:41,631 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 173 transitions, 522 flow [2022-09-16 11:56:41,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 142.85714285714286) internal successors, (1000), 7 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:41,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:41,631 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] [2022-09-16 11:56:41,648 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 11:56:41,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:41,847 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:41,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:41,848 INFO L85 PathProgramCache]: Analyzing trace with hash 262169436, now seen corresponding path program 1 times [2022-09-16 11:56:41,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:41,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737268430] [2022-09-16 11:56:41,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:41,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:41,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:41,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737268430] [2022-09-16 11:56:41,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737268430] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:41,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:41,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:56:41,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155014945] [2022-09-16 11:56:41,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:41,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:56:41,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:41,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:56:41,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:56:41,902 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 191 [2022-09-16 11:56:41,902 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 173 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:41,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:41,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 191 [2022-09-16 11:56:41,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:43,521 INFO L130 PetriNetUnfolder]: 3593/11511 cut-off events. [2022-09-16 11:56:43,522 INFO L131 PetriNetUnfolder]: For 2216/2216 co-relation queries the response was YES. [2022-09-16 11:56:43,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21148 conditions, 11511 events. 3593/11511 cut-off events. For 2216/2216 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 123026 event pairs, 876 based on Foata normal form. 62/9913 useless extension candidates. Maximal degree in co-relation 20693. Up to 3489 conditions per place. [2022-09-16 11:56:43,686 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 23 selfloop transitions, 2 changer transitions 0/181 dead transitions. [2022-09-16 11:56:43,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 181 transitions, 592 flow [2022-09-16 11:56:43,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:56:43,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:56:43,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2022-09-16 11:56:43,688 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.893542757417103 [2022-09-16 11:56:43,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2022-09-16 11:56:43,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2022-09-16 11:56:43,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:43,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2022-09-16 11:56:43,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:43,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:43,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:43,693 INFO L175 Difference]: Start difference. First operand has 205 places, 173 transitions, 522 flow. Second operand 3 states and 512 transitions. [2022-09-16 11:56:43,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 181 transitions, 592 flow [2022-09-16 11:56:43,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 181 transitions, 579 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:56:43,742 INFO L231 Difference]: Finished difference. Result has 203 places, 173 transitions, 517 flow [2022-09-16 11:56:43,742 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=517, PETRI_PLACES=203, PETRI_TRANSITIONS=173} [2022-09-16 11:56:43,742 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 37 predicate places. [2022-09-16 11:56:43,743 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 173 transitions, 517 flow [2022-09-16 11:56:43,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:43,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:43,743 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:56:43,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:56:43,743 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:43,744 INFO L85 PathProgramCache]: Analyzing trace with hash -832686742, now seen corresponding path program 1 times [2022-09-16 11:56:43,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:43,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036726691] [2022-09-16 11:56:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:43,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:43,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:56:43,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:43,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036726691] [2022-09-16 11:56:43,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036726691] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:43,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583480972] [2022-09-16 11:56:43,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:43,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:43,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:43,800 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:43,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:56:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:43,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:56:43,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:44,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:56:44,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:44,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583480972] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:56:44,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:56:44,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 11:56:44,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745692849] [2022-09-16 11:56:44,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:56:44,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:56:44,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:44,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:56:44,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:56:44,294 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 191 [2022-09-16 11:56:44,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 173 transitions, 517 flow. Second operand has 23 states, 23 states have (on average 133.69565217391303) internal successors, (3075), 23 states have internal predecessors, (3075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:44,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:44,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 191 [2022-09-16 11:56:44,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:56,339 INFO L130 PetriNetUnfolder]: 48463/78990 cut-off events. [2022-09-16 11:56:56,339 INFO L131 PetriNetUnfolder]: For 41145/41242 co-relation queries the response was YES. [2022-09-16 11:56:56,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190485 conditions, 78990 events. 48463/78990 cut-off events. For 41145/41242 co-relation queries the response was YES. Maximal size of possible extension queue 2272. Compared 714951 event pairs, 13110 based on Foata normal form. 733/72316 useless extension candidates. Maximal degree in co-relation 189244. Up to 18065 conditions per place. [2022-09-16 11:56:57,388 INFO L137 encePairwiseOnDemand]: 173/191 looper letters, 301 selfloop transitions, 33 changer transitions 3/445 dead transitions. [2022-09-16 11:56:57,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 445 transitions, 2044 flow [2022-09-16 11:56:57,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:56:57,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-16 11:56:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3972 transitions. [2022-09-16 11:56:57,396 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7427075542258789 [2022-09-16 11:56:57,396 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3972 transitions. [2022-09-16 11:56:57,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3972 transitions. [2022-09-16 11:56:57,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:57,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3972 transitions. [2022-09-16 11:56:57,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 141.85714285714286) internal successors, (3972), 28 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:57,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 191.0) internal successors, (5539), 29 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:57,414 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 191.0) internal successors, (5539), 29 states have internal predecessors, (5539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:57,414 INFO L175 Difference]: Start difference. First operand has 203 places, 173 transitions, 517 flow. Second operand 28 states and 3972 transitions. [2022-09-16 11:56:57,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 445 transitions, 2044 flow [2022-09-16 11:56:57,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 445 transitions, 2040 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 11:56:57,672 INFO L231 Difference]: Finished difference. Result has 234 places, 188 transitions, 674 flow [2022-09-16 11:56:57,673 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=674, PETRI_PLACES=234, PETRI_TRANSITIONS=188} [2022-09-16 11:56:57,673 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 68 predicate places. [2022-09-16 11:56:57,673 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 188 transitions, 674 flow [2022-09-16 11:56:57,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 133.69565217391303) internal successors, (3075), 23 states have internal predecessors, (3075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:57,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:57,674 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] [2022-09-16 11:56:57,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:56:57,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-16 11:56:57,887 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:56:57,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:57,887 INFO L85 PathProgramCache]: Analyzing trace with hash -462667597, now seen corresponding path program 1 times [2022-09-16 11:56:57,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:57,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740515450] [2022-09-16 11:56:57,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:57,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:57,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:57,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740515450] [2022-09-16 11:56:57,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740515450] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:56:57,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:56:57,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 11:56:57,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781775236] [2022-09-16 11:56:57,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:56:57,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:56:57,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:57,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:56:57,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:56:57,968 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 191 [2022-09-16 11:56:57,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 188 transitions, 674 flow. Second operand has 8 states, 8 states have (on average 129.375) internal successors, (1035), 8 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:57,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:57,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 191 [2022-09-16 11:56:57,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:03,239 INFO L130 PetriNetUnfolder]: 20872/43790 cut-off events. [2022-09-16 11:57:03,240 INFO L131 PetriNetUnfolder]: For 24747/26071 co-relation queries the response was YES. [2022-09-16 11:57:03,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96301 conditions, 43790 events. 20872/43790 cut-off events. For 24747/26071 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 476098 event pairs, 17651 based on Foata normal form. 1325/37805 useless extension candidates. Maximal degree in co-relation 96165. Up to 28591 conditions per place. [2022-09-16 11:57:03,748 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 54 selfloop transitions, 7 changer transitions 0/185 dead transitions. [2022-09-16 11:57:03,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 185 transitions, 762 flow [2022-09-16 11:57:03,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:57:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:57:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1058 transitions. [2022-09-16 11:57:03,750 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6924083769633508 [2022-09-16 11:57:03,750 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1058 transitions. [2022-09-16 11:57:03,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1058 transitions. [2022-09-16 11:57:03,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:03,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1058 transitions. [2022-09-16 11:57:03,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.25) internal successors, (1058), 8 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:03,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:03,753 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:03,753 INFO L175 Difference]: Start difference. First operand has 234 places, 188 transitions, 674 flow. Second operand 8 states and 1058 transitions. [2022-09-16 11:57:03,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 185 transitions, 762 flow [2022-09-16 11:57:03,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 185 transitions, 715 flow, removed 10 selfloop flow, removed 16 redundant places. [2022-09-16 11:57:03,838 INFO L231 Difference]: Finished difference. Result has 216 places, 183 transitions, 601 flow [2022-09-16 11:57:03,839 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=601, PETRI_PLACES=216, PETRI_TRANSITIONS=183} [2022-09-16 11:57:03,839 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 50 predicate places. [2022-09-16 11:57:03,839 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 183 transitions, 601 flow [2022-09-16 11:57:03,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 129.375) internal successors, (1035), 8 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:03,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:03,840 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] [2022-09-16 11:57:03,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:57:03,840 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:57:03,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:03,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2120837811, now seen corresponding path program 1 times [2022-09-16 11:57:03,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:03,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966353964] [2022-09-16 11:57:03,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:03,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:04,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:04,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:04,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966353964] [2022-09-16 11:57:04,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966353964] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:04,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357282911] [2022-09-16 11:57:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:04,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:04,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:04,287 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:57:04,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:57:04,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:04,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 11:57:04,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:04,390 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 11:57:04,425 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:57:04,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 18 [2022-09-16 11:57:04,621 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:57:04,621 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 15 treesize of output 15 [2022-09-16 11:57:04,749 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 11:57:04,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:57:04,939 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 11:57:04,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:57:04,991 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 11:57:05,023 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 11:57:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:05,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:57:05,084 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_305 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-09-16 11:57:05,125 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_304 (Array Int Int)) (v_ArrVal_305 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_304) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-09-16 11:57:05,141 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_304 (Array Int Int)) (v_ArrVal_303 (Array Int Int)) (v_ArrVal_305 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_303) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_304) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-09-16 11:57:05,153 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_304 (Array Int Int)) (v_ArrVal_303 (Array Int Int)) (v_ArrVal_305 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_303) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_304) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) |c_ULTIMATE.start_main_#t~ret17#1.base|) |c_ULTIMATE.start_main_#t~ret17#1.offset|) 2147483649)) is different from false [2022-09-16 11:57:05,161 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_304 (Array Int Int)) (v_ArrVal_303 (Array Int Int)) (v_ArrVal_305 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_303) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_304) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 2147483649)) is different from false [2022-09-16 11:57:05,182 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_304 (Array Int Int)) (v_ArrVal_303 (Array Int Int)) (v_ArrVal_305 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_303) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_304) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483649)) is different from false [2022-09-16 11:57:05,210 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:57:05,211 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 28 treesize of output 29 [2022-09-16 11:57:05,231 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:57:05,232 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 490 treesize of output 476 [2022-09-16 11:57:05,247 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 462 treesize of output 446 [2022-09-16 11:57:05,257 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 446 treesize of output 438 [2022-09-16 11:57:05,267 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 438 treesize of output 406 [2022-09-16 11:57:06,523 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 10 treesize of output 8 [2022-09-16 11:57:06,528 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 10 treesize of output 8 [2022-09-16 11:57:06,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:57:06,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357282911] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:57:06,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:57:06,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 43 [2022-09-16 11:57:06,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914791820] [2022-09-16 11:57:06,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:57:06,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-09-16 11:57:06,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:06,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-09-16 11:57:06,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1251, Unknown=6, NotChecked=462, Total=1892 [2022-09-16 11:57:06,578 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 191 [2022-09-16 11:57:06,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 183 transitions, 601 flow. Second operand has 44 states, 44 states have (on average 117.04545454545455) internal successors, (5150), 44 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:06,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:06,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 191 [2022-09-16 11:57:06,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:14,100 INFO L130 PetriNetUnfolder]: 21229/40966 cut-off events. [2022-09-16 11:57:14,101 INFO L131 PetriNetUnfolder]: For 13008/13008 co-relation queries the response was YES. [2022-09-16 11:57:14,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80692 conditions, 40966 events. 21229/40966 cut-off events. For 13008/13008 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 412837 event pairs, 13523 based on Foata normal form. 0/35239 useless extension candidates. Maximal degree in co-relation 80566. Up to 23670 conditions per place. [2022-09-16 11:57:14,830 INFO L137 encePairwiseOnDemand]: 171/191 looper letters, 99 selfloop transitions, 27 changer transitions 0/242 dead transitions. [2022-09-16 11:57:14,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 242 transitions, 990 flow [2022-09-16 11:57:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 11:57:14,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-09-16 11:57:14,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2537 transitions. [2022-09-16 11:57:14,834 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6325105958613813 [2022-09-16 11:57:14,834 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2537 transitions. [2022-09-16 11:57:14,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2537 transitions. [2022-09-16 11:57:14,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:14,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2537 transitions. [2022-09-16 11:57:14,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 120.80952380952381) internal successors, (2537), 21 states have internal predecessors, (2537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:14,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 191.0) internal successors, (4202), 22 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:14,844 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 191.0) internal successors, (4202), 22 states have internal predecessors, (4202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:14,844 INFO L175 Difference]: Start difference. First operand has 216 places, 183 transitions, 601 flow. Second operand 21 states and 2537 transitions. [2022-09-16 11:57:14,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 242 transitions, 990 flow [2022-09-16 11:57:14,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 242 transitions, 976 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:57:14,856 INFO L231 Difference]: Finished difference. Result has 237 places, 201 transitions, 723 flow [2022-09-16 11:57:14,856 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=723, PETRI_PLACES=237, PETRI_TRANSITIONS=201} [2022-09-16 11:57:14,857 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 71 predicate places. [2022-09-16 11:57:14,857 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 201 transitions, 723 flow [2022-09-16 11:57:14,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 117.04545454545455) internal successors, (5150), 44 states have internal predecessors, (5150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:14,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:14,859 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] [2022-09-16 11:57:14,886 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 11:57:15,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:15,075 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:57:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:15,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1984349808, now seen corresponding path program 1 times [2022-09-16 11:57:15,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:15,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332277071] [2022-09-16 11:57:15,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:15,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:15,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:15,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:57:15,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:15,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332277071] [2022-09-16 11:57:15,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332277071] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:15,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:15,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:57:15,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589181041] [2022-09-16 11:57:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:15,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:57:15,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:57:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:57:15,108 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 191 [2022-09-16 11:57:15,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 201 transitions, 723 flow. Second operand has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:15,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:15,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 191 [2022-09-16 11:57:15,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:25,227 INFO L130 PetriNetUnfolder]: 31282/54257 cut-off events. [2022-09-16 11:57:25,227 INFO L131 PetriNetUnfolder]: For 25358/26282 co-relation queries the response was YES. [2022-09-16 11:57:25,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122053 conditions, 54257 events. 31282/54257 cut-off events. For 25358/26282 co-relation queries the response was YES. Maximal size of possible extension queue 2910. Compared 550958 event pairs, 18719 based on Foata normal form. 87/47444 useless extension candidates. Maximal degree in co-relation 121932. Up to 26708 conditions per place. [2022-09-16 11:57:26,085 INFO L137 encePairwiseOnDemand]: 185/191 looper letters, 62 selfloop transitions, 7 changer transitions 0/239 dead transitions. [2022-09-16 11:57:26,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 239 transitions, 979 flow [2022-09-16 11:57:26,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:57:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:57:26,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 834 transitions. [2022-09-16 11:57:26,094 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8732984293193717 [2022-09-16 11:57:26,094 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 834 transitions. [2022-09-16 11:57:26,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 834 transitions. [2022-09-16 11:57:26,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:26,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 834 transitions. [2022-09-16 11:57:26,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.8) internal successors, (834), 5 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:26,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:26,113 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:26,113 INFO L175 Difference]: Start difference. First operand has 237 places, 201 transitions, 723 flow. Second operand 5 states and 834 transitions. [2022-09-16 11:57:26,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 239 transitions, 979 flow [2022-09-16 11:57:26,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 239 transitions, 963 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-16 11:57:26,272 INFO L231 Difference]: Finished difference. Result has 236 places, 205 transitions, 756 flow [2022-09-16 11:57:26,273 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=756, PETRI_PLACES=236, PETRI_TRANSITIONS=205} [2022-09-16 11:57:26,273 INFO L287 CegarLoopForPetriNet]: 166 programPoint places, 70 predicate places. [2022-09-16 11:57:26,273 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 205 transitions, 756 flow [2022-09-16 11:57:26,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:26,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:26,273 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] [2022-09-16 11:57:26,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-09-16 11:57:26,274 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:57:26,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:26,274 INFO L85 PathProgramCache]: Analyzing trace with hash 81596179, now seen corresponding path program 1 times [2022-09-16 11:57:26,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:26,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17064953] [2022-09-16 11:57:26,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:26,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:26,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:26,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:26,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:26,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17064953] [2022-09-16 11:57:26,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17064953] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:26,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939274686] [2022-09-16 11:57:26,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:26,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:26,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:26,656 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:57:26,657 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:57:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:26,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 11:57:26,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:26,757 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 11:57:26,947 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:57:26,947 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 11:57:27,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 11:57:27,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:57:27,304 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 11:57:27,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:57:27,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 11:57:27,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:57:27,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 11:57:27,479 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 18 treesize of output 20 [2022-09-16 11:57:27,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:27,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:57:27,502 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_372 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_372) c_~A~0.base) (+ (* 4 |c_thread3Thread1of1ForFork0_~i~2#1|) c_~A~0.offset)) 2147483649)) is different from false [2022-09-16 11:57:27,513 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_372 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_372) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-09-16 11:57:27,520 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_371 (Array Int Int)) (v_ArrVal_372 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_372) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-09-16 11:57:27,542 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_371 (Array Int Int)) (v_ArrVal_370 (Array Int Int)) (v_ArrVal_372 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_370) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_372) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-09-16 11:57:27,568 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_369 (Array Int Int)) (v_ArrVal_371 (Array Int Int)) (v_ArrVal_370 (Array Int Int)) (v_ArrVal_372 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_369) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_370) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_372) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-09-16 11:57:27,587 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_369 (Array Int Int)) (v_ArrVal_371 (Array Int Int)) (v_ArrVal_370 (Array Int Int)) (v_ArrVal_372 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_369) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_370) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_372) |c_ULTIMATE.start_main_#t~ret17#1.base|) |c_ULTIMATE.start_main_#t~ret17#1.offset|) 2147483649)) is different from false [2022-09-16 11:57:27,593 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_369 (Array Int Int)) (v_ArrVal_371 (Array Int Int)) (v_ArrVal_370 (Array Int Int)) (v_ArrVal_372 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_369) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_370) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_372) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 2147483649)) is different from false [2022-09-16 11:57:27,597 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_369 (Array Int Int)) (v_ArrVal_371 (Array Int Int)) (v_ArrVal_370 (Array Int Int)) (v_ArrVal_372 (Array Int Int))) (< (select (select (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_369) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_370) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_371) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_372) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483649)) is different from false [2022-09-16 11:57:27,616 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:57:27,617 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 31 treesize of output 32 [2022-09-16 11:57:27,622 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:57:27,623 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 486 treesize of output 480 [2022-09-16 11:57:27,627 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 466 treesize of output 434 [2022-09-16 11:57:27,632 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 434 treesize of output 418 [2022-09-16 11:57:27,636 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 418 treesize of output 410 [2022-09-16 11:57:27,642 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 206 treesize of output 202 [2022-09-16 11:57:28,357 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 10 treesize of output 8 [2022-09-16 11:57:28,361 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 10 treesize of output 8 [2022-09-16 11:57:28,363 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 10 treesize of output 8 [2022-09-16 11:57:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:57:28,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939274686] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:57:28,424 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:57:28,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 47 [2022-09-16 11:57:28,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192181190] [2022-09-16 11:57:28,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:57:28,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-09-16 11:57:28,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:28,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-09-16 11:57:28,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1400, Unknown=8, NotChecked=664, Total=2256 [2022-09-16 11:57:28,430 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 191 [2022-09-16 11:57:28,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 205 transitions, 756 flow. Second operand has 48 states, 48 states have (on average 115.9375) internal successors, (5565), 48 states have internal predecessors, (5565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:28,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:28,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 191 [2022-09-16 11:57:28,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:46,688 INFO L130 PetriNetUnfolder]: 49637/93980 cut-off events. [2022-09-16 11:57:46,688 INFO L131 PetriNetUnfolder]: For 75456/79182 co-relation queries the response was YES. [2022-09-16 11:57:48,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220309 conditions, 93980 events. 49637/93980 cut-off events. For 75456/79182 co-relation queries the response was YES. Maximal size of possible extension queue 2935. Compared 1006417 event pairs, 26883 based on Foata normal form. 305/88364 useless extension candidates. Maximal degree in co-relation 220167. Up to 61084 conditions per place. [2022-09-16 11:57:48,589 INFO L137 encePairwiseOnDemand]: 156/191 looper letters, 116 selfloop transitions, 81 changer transitions 0/314 dead transitions. [2022-09-16 11:57:48,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 314 transitions, 1523 flow [2022-09-16 11:57:48,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-09-16 11:57:48,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-09-16 11:57:48,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2791 transitions. [2022-09-16 11:57:48,595 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6353289323924425 [2022-09-16 11:57:48,595 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2791 transitions. [2022-09-16 11:57:48,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2791 transitions. [2022-09-16 11:57:48,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:48,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2791 transitions. [2022-09-16 11:57:48,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 121.34782608695652) internal successors, (2791), 23 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:48,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 191.0) internal successors, (4584), 24 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:48,601 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 191.0) internal successors, (4584), 24 states have internal predecessors, (4584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:48,601 INFO L175 Difference]: Start difference. First operand has 236 places, 205 transitions, 756 flow. Second operand 23 states and 2791 transitions. [2022-09-16 11:57:48,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 314 transitions, 1523 flow