/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:59:05,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:59:05,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:59:05,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:59:05,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:59:05,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:59:05,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:59:05,858 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:59:05,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:59:05,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:59:05,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:59:05,864 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:59:05,864 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:59:05,865 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:59:05,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:59:05,866 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:59:05,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:59:05,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:59:05,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:59:05,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:59:05,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:59:05,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:59:05,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:59:05,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:59:05,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:59:05,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:59:05,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:59:05,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:59:05,876 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:59:05,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:59:05,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:59:05,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:59:05,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:59:05,878 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:59:05,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:59:05,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:59:05,879 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:59:05,879 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:59:05,880 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:59:05,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:59:05,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:59:05,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:59:05,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:59:05,908 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:59:05,909 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:59:05,909 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:59:05,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:59:05,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:59:05,910 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:59:05,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:59:05,910 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:59:05,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:59:05,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:59:05,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:59:05,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:59:05,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:59:05,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:59:05,911 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:59:05,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:59:05,911 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:59:05,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:59:05,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:59:05,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:59:05,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:59:05,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:59:05,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:59:05,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:59:05,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:59:05,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:59:05,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:59:05,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:59:05,913 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:59:05,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:59:05,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:59:06,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:59:06,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:59:06,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:59:06,138 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:59:06,139 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:59:06,139 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-09-16 11:59:06,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073e102f4/e04609d7eff3405d83c4303e9c0a29fb/FLAGaa8c11292 [2022-09-16 11:59:06,509 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:59:06,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-09-16 11:59:06,516 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073e102f4/e04609d7eff3405d83c4303e9c0a29fb/FLAGaa8c11292 [2022-09-16 11:59:06,928 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073e102f4/e04609d7eff3405d83c4303e9c0a29fb [2022-09-16 11:59:06,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:59:06,930 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:59:06,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:59:06,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:59:06,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:59:06,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:59:06" (1/1) ... [2022-09-16 11:59:06,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9e3bf5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:06, skipping insertion in model container [2022-09-16 11:59:06,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:59:06" (1/1) ... [2022-09-16 11:59:06,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:59:06,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:59:07,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-09-16 11:59:07,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:59:07,117 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:59:07,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-09-16 11:59:07,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:59:07,161 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:59:07,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07 WrapperNode [2022-09-16 11:59:07,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:59:07,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:59:07,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:59:07,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:59:07,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07" (1/1) ... [2022-09-16 11:59:07,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07" (1/1) ... [2022-09-16 11:59:07,206 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 175 [2022-09-16 11:59:07,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:59:07,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:59:07,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:59:07,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:59:07,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07" (1/1) ... [2022-09-16 11:59:07,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07" (1/1) ... [2022-09-16 11:59:07,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07" (1/1) ... [2022-09-16 11:59:07,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07" (1/1) ... [2022-09-16 11:59:07,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07" (1/1) ... [2022-09-16 11:59:07,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07" (1/1) ... [2022-09-16 11:59:07,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07" (1/1) ... [2022-09-16 11:59:07,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:59:07,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:59:07,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:59:07,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:59:07,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07" (1/1) ... [2022-09-16 11:59:07,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:59:07,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:07,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:59:07,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:59:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:59:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:59:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:59:07,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:59:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:59:07,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:59:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:59:07,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:59:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:59:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:59:07,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:59:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:59:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:59:07,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:59:07,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:59:07,299 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:59:07,379 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:59:07,380 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:59:07,669 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:59:07,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:59:07,785 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:59:07,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:59:07 BoogieIcfgContainer [2022-09-16 11:59:07,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:59:07,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:59:07,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:59:07,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:59:07,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:59:06" (1/3) ... [2022-09-16 11:59:07,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0c71ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:59:07, skipping insertion in model container [2022-09-16 11:59:07,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:59:07" (2/3) ... [2022-09-16 11:59:07,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e0c71ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:59:07, skipping insertion in model container [2022-09-16 11:59:07,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:59:07" (3/3) ... [2022-09-16 11:59:07,795 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2022-09-16 11:59:07,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:59:07,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-09-16 11:59:07,807 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:59:07,871 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:59:07,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 162 transitions, 340 flow [2022-09-16 11:59:07,955 INFO L130 PetriNetUnfolder]: 11/160 cut-off events. [2022-09-16 11:59:07,956 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-16 11:59:07,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 160 events. 11/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 148 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2022-09-16 11:59:07,959 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 162 transitions, 340 flow [2022-09-16 11:59:07,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 141 transitions, 291 flow [2022-09-16 11:59:07,969 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:59:07,974 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;@95f4fa2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:59:07,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-09-16 11:59:07,996 INFO L130 PetriNetUnfolder]: 3/72 cut-off events. [2022-09-16 11:59:07,997 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:59:07,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:07,998 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] [2022-09-16 11:59:07,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:08,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:08,006 INFO L85 PathProgramCache]: Analyzing trace with hash -932682411, now seen corresponding path program 1 times [2022-09-16 11:59:08,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:08,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991559952] [2022-09-16 11:59:08,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:08,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:08,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:08,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991559952] [2022-09-16 11:59:08,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991559952] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:08,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:08,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:08,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305191501] [2022-09-16 11:59:08,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:08,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:08,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:08,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:08,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:08,246 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-09-16 11:59:08,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 141 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:08,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-09-16 11:59:08,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:08,424 INFO L130 PetriNetUnfolder]: 57/368 cut-off events. [2022-09-16 11:59:08,424 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-09-16 11:59:08,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 368 events. 57/368 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1405 event pairs, 28 based on Foata normal form. 30/304 useless extension candidates. Maximal degree in co-relation 192. Up to 62 conditions per place. [2022-09-16 11:59:08,431 INFO L137 encePairwiseOnDemand]: 146/162 looper letters, 34 selfloop transitions, 4 changer transitions 3/148 dead transitions. [2022-09-16 11:59:08,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 148 transitions, 390 flow [2022-09-16 11:59:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:59:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:59:08,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2022-09-16 11:59:08,449 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-09-16 11:59:08,450 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2022-09-16 11:59:08,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2022-09-16 11:59:08,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:08,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2022-09-16 11:59:08,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,466 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,468 INFO L175 Difference]: Start difference. First operand has 138 places, 141 transitions, 291 flow. Second operand 5 states and 698 transitions. [2022-09-16 11:59:08,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 148 transitions, 390 flow [2022-09-16 11:59:08,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 148 transitions, 380 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:59:08,475 INFO L231 Difference]: Finished difference. Result has 139 places, 131 transitions, 290 flow [2022-09-16 11:59:08,477 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=139, PETRI_TRANSITIONS=131} [2022-09-16 11:59:08,480 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 1 predicate places. [2022-09-16 11:59:08,480 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 131 transitions, 290 flow [2022-09-16 11:59:08,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:08,481 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:08,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:59:08,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:08,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:08,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1791117521, now seen corresponding path program 1 times [2022-09-16 11:59:08,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:08,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448111667] [2022-09-16 11:59:08,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:08,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:08,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:08,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:08,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448111667] [2022-09-16 11:59:08,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448111667] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:08,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501369252] [2022-09-16 11:59:08,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:08,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:08,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:08,608 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:08,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:59:08,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:08,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:08,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:08,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:08,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501369252] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:08,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:08,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:59:08,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667424105] [2022-09-16 11:59:08,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:08,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:59:08,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:08,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:59:08,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:59:08,811 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-09-16 11:59:08,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 131 transitions, 290 flow. Second operand has 12 states, 12 states have (on average 130.66666666666666) internal successors, (1568), 12 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:08,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:08,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-09-16 11:59:08,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:09,149 INFO L130 PetriNetUnfolder]: 141/825 cut-off events. [2022-09-16 11:59:09,150 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-09-16 11:59:09,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 825 events. 141/825 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4394 event pairs, 70 based on Foata normal form. 3/608 useless extension candidates. Maximal degree in co-relation 908. Up to 57 conditions per place. [2022-09-16 11:59:09,178 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 73 selfloop transitions, 18 changer transitions 0/198 dead transitions. [2022-09-16 11:59:09,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 198 transitions, 644 flow [2022-09-16 11:59:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:59:09,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:59:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2398 transitions. [2022-09-16 11:59:09,183 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8223593964334706 [2022-09-16 11:59:09,183 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2398 transitions. [2022-09-16 11:59:09,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2398 transitions. [2022-09-16 11:59:09,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:09,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2398 transitions. [2022-09-16 11:59:09,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.22222222222223) internal successors, (2398), 18 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 162.0) internal successors, (3078), 19 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,193 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 162.0) internal successors, (3078), 19 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,193 INFO L175 Difference]: Start difference. First operand has 139 places, 131 transitions, 290 flow. Second operand 18 states and 2398 transitions. [2022-09-16 11:59:09,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 198 transitions, 644 flow [2022-09-16 11:59:09,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 198 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:09,198 INFO L231 Difference]: Finished difference. Result has 156 places, 143 transitions, 394 flow [2022-09-16 11:59:09,199 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=394, PETRI_PLACES=156, PETRI_TRANSITIONS=143} [2022-09-16 11:59:09,199 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 18 predicate places. [2022-09-16 11:59:09,200 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 143 transitions, 394 flow [2022-09-16 11:59:09,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.66666666666666) internal successors, (1568), 12 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:09,201 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:09,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:09,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:09,420 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:09,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:09,420 INFO L85 PathProgramCache]: Analyzing trace with hash 309932108, now seen corresponding path program 1 times [2022-09-16 11:59:09,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:09,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186151887] [2022-09-16 11:59:09,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:09,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:09,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:09,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:09,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:09,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186151887] [2022-09-16 11:59:09,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186151887] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:09,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353219849] [2022-09-16 11:59:09,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:09,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:09,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:09,503 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:09,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:59:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:09,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:09,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:09,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:09,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:09,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353219849] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:09,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:09,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:59:09,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112379095] [2022-09-16 11:59:09,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:09,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:09,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:09,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:09,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:59:09,615 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-09-16 11:59:09,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 143 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:09,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-09-16 11:59:09,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:09,761 INFO L130 PetriNetUnfolder]: 141/821 cut-off events. [2022-09-16 11:59:09,761 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-09-16 11:59:09,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 821 events. 141/821 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 4427 event pairs, 70 based on Foata normal form. 4/605 useless extension candidates. Maximal degree in co-relation 960. Up to 212 conditions per place. [2022-09-16 11:59:09,766 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 35 selfloop transitions, 11 changer transitions 0/153 dead transitions. [2022-09-16 11:59:09,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 153 transitions, 493 flow [2022-09-16 11:59:09,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 934 transitions. [2022-09-16 11:59:09,768 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8236331569664903 [2022-09-16 11:59:09,768 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 934 transitions. [2022-09-16 11:59:09,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 934 transitions. [2022-09-16 11:59:09,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:09,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 934 transitions. [2022-09-16 11:59:09,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.42857142857142) internal successors, (934), 7 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,771 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,771 INFO L175 Difference]: Start difference. First operand has 156 places, 143 transitions, 394 flow. Second operand 7 states and 934 transitions. [2022-09-16 11:59:09,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 153 transitions, 493 flow [2022-09-16 11:59:09,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 461 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:09,775 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 357 flow [2022-09-16 11:59:09,775 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-09-16 11:59:09,776 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 14 predicate places. [2022-09-16 11:59:09,776 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 357 flow [2022-09-16 11:59:09,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:09,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:09,776 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] [2022-09-16 11:59:09,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:09,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:59:09,995 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:09,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:09,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1466866018, now seen corresponding path program 1 times [2022-09-16 11:59:09,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:09,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56967592] [2022-09-16 11:59:09,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:09,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:10,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:10,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:10,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56967592] [2022-09-16 11:59:10,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56967592] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:10,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:10,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:59:10,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846749373] [2022-09-16 11:59:10,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:10,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:10,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:10,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:10,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:59:10,092 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 162 [2022-09-16 11:59:10,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:10,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 162 [2022-09-16 11:59:10,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:10,202 INFO L130 PetriNetUnfolder]: 113/708 cut-off events. [2022-09-16 11:59:10,203 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-09-16 11:59:10,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 708 events. 113/708 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3526 event pairs, 56 based on Foata normal form. 5/535 useless extension candidates. Maximal degree in co-relation 900. Up to 221 conditions per place. [2022-09-16 11:59:10,206 INFO L137 encePairwiseOnDemand]: 149/162 looper letters, 27 selfloop transitions, 6 changer transitions 3/144 dead transitions. [2022-09-16 11:59:10,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 144 transitions, 442 flow [2022-09-16 11:59:10,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:59:10,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:59:10,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 918 transitions. [2022-09-16 11:59:10,208 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2022-09-16 11:59:10,208 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 918 transitions. [2022-09-16 11:59:10,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 918 transitions. [2022-09-16 11:59:10,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:10,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 918 transitions. [2022-09-16 11:59:10,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.14285714285714) internal successors, (918), 7 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,212 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,212 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 357 flow. Second operand 7 states and 918 transitions. [2022-09-16 11:59:10,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 144 transitions, 442 flow [2022-09-16 11:59:10,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 144 transitions, 428 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:10,215 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 371 flow [2022-09-16 11:59:10,215 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2022-09-16 11:59:10,216 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 17 predicate places. [2022-09-16 11:59:10,216 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 371 flow [2022-09-16 11:59:10,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:10,216 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] [2022-09-16 11:59:10,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:59:10,217 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:10,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:10,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1348639142, now seen corresponding path program 1 times [2022-09-16 11:59:10,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:10,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108208002] [2022-09-16 11:59:10,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:10,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:10,310 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 11:59:10,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:10,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108208002] [2022-09-16 11:59:10,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108208002] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:10,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051495482] [2022-09-16 11:59:10,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:10,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:10,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:10,312 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:10,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:59:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:10,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:59:10,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:10,433 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 11:59:10,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:10,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051495482] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:10,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:10,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-09-16 11:59:10,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272314028] [2022-09-16 11:59:10,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:10,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:10,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:10,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:59:10,435 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 162 [2022-09-16 11:59:10,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:10,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 162 [2022-09-16 11:59:10,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:10,484 INFO L130 PetriNetUnfolder]: 45/501 cut-off events. [2022-09-16 11:59:10,484 INFO L131 PetriNetUnfolder]: For 79/103 co-relation queries the response was YES. [2022-09-16 11:59:10,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 501 events. 45/501 cut-off events. For 79/103 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2144 event pairs, 20 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 633. Up to 84 conditions per place. [2022-09-16 11:59:10,486 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 9 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2022-09-16 11:59:10,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 136 transitions, 383 flow [2022-09-16 11:59:10,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:59:10,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 11:59:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 551 transitions. [2022-09-16 11:59:10,488 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8503086419753086 [2022-09-16 11:59:10,489 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 551 transitions. [2022-09-16 11:59:10,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 551 transitions. [2022-09-16 11:59:10,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:10,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 551 transitions. [2022-09-16 11:59:10,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,491 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,491 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 371 flow. Second operand 4 states and 551 transitions. [2022-09-16 11:59:10,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 136 transitions, 383 flow [2022-09-16 11:59:10,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 136 transitions, 371 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:59:10,493 INFO L231 Difference]: Finished difference. Result has 149 places, 136 transitions, 353 flow [2022-09-16 11:59:10,494 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=149, PETRI_TRANSITIONS=136} [2022-09-16 11:59:10,494 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 11 predicate places. [2022-09-16 11:59:10,494 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 136 transitions, 353 flow [2022-09-16 11:59:10,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:10,495 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 11:59:10,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:10,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:10,713 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:10,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:10,713 INFO L85 PathProgramCache]: Analyzing trace with hash -2108780891, now seen corresponding path program 1 times [2022-09-16 11:59:10,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:10,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739326249] [2022-09-16 11:59:10,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:10,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:10,759 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 11:59:10,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:10,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739326249] [2022-09-16 11:59:10,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739326249] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:10,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:10,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:10,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921370503] [2022-09-16 11:59:10,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:10,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:59:10,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:10,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:59:10,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:59:10,761 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 162 [2022-09-16 11:59:10,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 136 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:10,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 162 [2022-09-16 11:59:10,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:10,878 INFO L130 PetriNetUnfolder]: 237/977 cut-off events. [2022-09-16 11:59:10,879 INFO L131 PetriNetUnfolder]: For 166/286 co-relation queries the response was YES. [2022-09-16 11:59:10,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 977 events. 237/977 cut-off events. For 166/286 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6043 event pairs, 80 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 1841. Up to 305 conditions per place. [2022-09-16 11:59:10,883 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 28 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2022-09-16 11:59:10,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 152 transitions, 466 flow [2022-09-16 11:59:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:59:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:59:10,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2022-09-16 11:59:10,886 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-09-16 11:59:10,886 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2022-09-16 11:59:10,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2022-09-16 11:59:10,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:10,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2022-09-16 11:59:10,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,893 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,893 INFO L175 Difference]: Start difference. First operand has 149 places, 136 transitions, 353 flow. Second operand 5 states and 684 transitions. [2022-09-16 11:59:10,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 152 transitions, 466 flow [2022-09-16 11:59:10,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 460 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-16 11:59:10,895 INFO L231 Difference]: Finished difference. Result has 153 places, 139 transitions, 377 flow [2022-09-16 11:59:10,895 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=153, PETRI_TRANSITIONS=139} [2022-09-16 11:59:10,897 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 15 predicate places. [2022-09-16 11:59:10,897 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 139 transitions, 377 flow [2022-09-16 11:59:10,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:10,898 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 11:59:10,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:59:10,898 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:10,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:10,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1709936893, now seen corresponding path program 1 times [2022-09-16 11:59:10,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:10,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324134569] [2022-09-16 11:59:10,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:10,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:10,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:10,978 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 11:59:10,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:10,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324134569] [2022-09-16 11:59:10,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324134569] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:10,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:59:10,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:59:10,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376331347] [2022-09-16 11:59:10,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:10,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:59:10,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:10,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:59:10,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:59:10,980 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 162 [2022-09-16 11:59:10,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 139 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:10,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:10,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 162 [2022-09-16 11:59:10,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:11,047 INFO L130 PetriNetUnfolder]: 65/801 cut-off events. [2022-09-16 11:59:11,047 INFO L131 PetriNetUnfolder]: For 138/178 co-relation queries the response was YES. [2022-09-16 11:59:11,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1212 conditions, 801 events. 65/801 cut-off events. For 138/178 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 4649 event pairs, 16 based on Foata normal form. 4/705 useless extension candidates. Maximal degree in co-relation 1116. Up to 124 conditions per place. [2022-09-16 11:59:11,052 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 11 selfloop transitions, 5 changer transitions 0/142 dead transitions. [2022-09-16 11:59:11,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 142 transitions, 421 flow [2022-09-16 11:59:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:59:11,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:59:11,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2022-09-16 11:59:11,053 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8559670781893004 [2022-09-16 11:59:11,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2022-09-16 11:59:11,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2022-09-16 11:59:11,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:11,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2022-09-16 11:59:11,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:11,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:11,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:11,055 INFO L175 Difference]: Start difference. First operand has 153 places, 139 transitions, 377 flow. Second operand 3 states and 416 transitions. [2022-09-16 11:59:11,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 142 transitions, 421 flow [2022-09-16 11:59:11,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 142 transitions, 419 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:11,058 INFO L231 Difference]: Finished difference. Result has 155 places, 141 transitions, 404 flow [2022-09-16 11:59:11,058 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=404, PETRI_PLACES=155, PETRI_TRANSITIONS=141} [2022-09-16 11:59:11,059 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 17 predicate places. [2022-09-16 11:59:11,059 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 141 transitions, 404 flow [2022-09-16 11:59:11,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:11,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:11,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:11,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:59:11,059 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:11,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:11,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1904214769, now seen corresponding path program 1 times [2022-09-16 11:59:11,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:11,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375870671] [2022-09-16 11:59:11,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:11,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:11,718 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 11:59:11,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:11,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375870671] [2022-09-16 11:59:11,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375870671] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:11,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264432391] [2022-09-16 11:59:11,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:11,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:11,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:11,720 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:11,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:59:11,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:11,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 39 conjunts are in the unsatisfiable core [2022-09-16 11:59:11,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:11,849 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 11:59:12,077 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:59:12,078 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 11:59:12,241 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 15 treesize of output 11 [2022-09-16 11:59:12,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:12,825 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 18 treesize of output 20 [2022-09-16 11:59:12,921 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 11:59:13,120 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:59:13,120 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 23 treesize of output 10 [2022-09-16 11:59:13,163 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 11:59:13,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:13,986 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:13,987 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 29 treesize of output 30 [2022-09-16 11:59:13,996 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:13,996 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 158 treesize of output 146 [2022-09-16 11:59:14,001 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 130 treesize of output 106 [2022-09-16 11:59:14,005 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 106 treesize of output 94 [2022-09-16 11:59:15,300 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 11:59:15,334 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 11:59:15,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264432391] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:15,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:15,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 61 [2022-09-16 11:59:15,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057101781] [2022-09-16 11:59:15,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:15,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-09-16 11:59:15,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:15,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-09-16 11:59:15,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=3511, Unknown=12, NotChecked=0, Total=3782 [2022-09-16 11:59:15,340 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-09-16 11:59:15,344 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 141 transitions, 404 flow. Second operand has 62 states, 62 states have (on average 80.95161290322581) internal successors, (5019), 62 states have internal predecessors, (5019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:15,344 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:15,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-09-16 11:59:15,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:16,898 INFO L130 PetriNetUnfolder]: 729/2416 cut-off events. [2022-09-16 11:59:16,898 INFO L131 PetriNetUnfolder]: For 1167/1379 co-relation queries the response was YES. [2022-09-16 11:59:16,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5019 conditions, 2416 events. 729/2416 cut-off events. For 1167/1379 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18982 event pairs, 384 based on Foata normal form. 0/2081 useless extension candidates. Maximal degree in co-relation 4889. Up to 1200 conditions per place. [2022-09-16 11:59:16,915 INFO L137 encePairwiseOnDemand]: 129/162 looper letters, 74 selfloop transitions, 46 changer transitions 0/186 dead transitions. [2022-09-16 11:59:16,915 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 186 transitions, 800 flow [2022-09-16 11:59:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:59:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-09-16 11:59:16,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2322 transitions. [2022-09-16 11:59:16,921 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2022-09-16 11:59:16,921 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2322 transitions. [2022-09-16 11:59:16,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2322 transitions. [2022-09-16 11:59:16,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:16,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2322 transitions. [2022-09-16 11:59:16,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 82.92857142857143) internal successors, (2322), 28 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:16,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 162.0) internal successors, (4698), 29 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:16,931 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 162.0) internal successors, (4698), 29 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:16,931 INFO L175 Difference]: Start difference. First operand has 155 places, 141 transitions, 404 flow. Second operand 28 states and 2322 transitions. [2022-09-16 11:59:16,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 186 transitions, 800 flow [2022-09-16 11:59:16,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 186 transitions, 753 flow, removed 18 selfloop flow, removed 2 redundant places. [2022-09-16 11:59:16,936 INFO L231 Difference]: Finished difference. Result has 194 places, 173 transitions, 679 flow [2022-09-16 11:59:16,936 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=679, PETRI_PLACES=194, PETRI_TRANSITIONS=173} [2022-09-16 11:59:16,937 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 56 predicate places. [2022-09-16 11:59:16,937 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 173 transitions, 679 flow [2022-09-16 11:59:16,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 80.95161290322581) internal successors, (5019), 62 states have internal predecessors, (5019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:16,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:16,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:16,957 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:17,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:17,147 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:17,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:17,148 INFO L85 PathProgramCache]: Analyzing trace with hash -237897443, now seen corresponding path program 2 times [2022-09-16 11:59:17,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:17,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303911081] [2022-09-16 11:59:17,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:17,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:17,680 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 11:59:17,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:17,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303911081] [2022-09-16 11:59:17,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303911081] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:17,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131767994] [2022-09-16 11:59:17,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:17,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:17,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:17,682 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:17,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:59:17,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:17,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:17,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 26 conjunts are in the unsatisfiable core [2022-09-16 11:59:17,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:17,765 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 11:59:17,842 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:59:17,842 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 11:59:18,095 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 11:59:18,182 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:59:18,183 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 23 treesize of output 10 [2022-09-16 11:59:18,205 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 11:59:18,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:18,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131767994] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:18,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:18,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22] total 31 [2022-09-16 11:59:18,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710012922] [2022-09-16 11:59:18,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:18,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:59:18,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:18,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:59:18,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=913, Unknown=0, NotChecked=0, Total=992 [2022-09-16 11:59:18,209 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2022-09-16 11:59:18,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 173 transitions, 679 flow. Second operand has 13 states, 13 states have (on average 101.53846153846153) internal successors, (1320), 13 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:18,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:18,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2022-09-16 11:59:18,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:18,819 INFO L130 PetriNetUnfolder]: 1372/3671 cut-off events. [2022-09-16 11:59:18,819 INFO L131 PetriNetUnfolder]: For 4451/6183 co-relation queries the response was YES. [2022-09-16 11:59:18,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9999 conditions, 3671 events. 1372/3671 cut-off events. For 4451/6183 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 28917 event pairs, 281 based on Foata normal form. 45/3337 useless extension candidates. Maximal degree in co-relation 9851. Up to 1652 conditions per place. [2022-09-16 11:59:18,851 INFO L137 encePairwiseOnDemand]: 144/162 looper letters, 79 selfloop transitions, 46 changer transitions 0/225 dead transitions. [2022-09-16 11:59:18,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 225 transitions, 1185 flow [2022-09-16 11:59:18,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-16 11:59:18,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-16 11:59:18,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1674 transitions. [2022-09-16 11:59:18,854 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6458333333333334 [2022-09-16 11:59:18,854 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1674 transitions. [2022-09-16 11:59:18,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1674 transitions. [2022-09-16 11:59:18,855 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:18,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1674 transitions. [2022-09-16 11:59:18,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 104.625) internal successors, (1674), 16 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:18,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 162.0) internal successors, (2754), 17 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:18,861 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 162.0) internal successors, (2754), 17 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:18,861 INFO L175 Difference]: Start difference. First operand has 194 places, 173 transitions, 679 flow. Second operand 16 states and 1674 transitions. [2022-09-16 11:59:18,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 225 transitions, 1185 flow [2022-09-16 11:59:18,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 225 transitions, 1147 flow, removed 7 selfloop flow, removed 12 redundant places. [2022-09-16 11:59:18,903 INFO L231 Difference]: Finished difference. Result has 200 places, 203 transitions, 967 flow [2022-09-16 11:59:18,904 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=967, PETRI_PLACES=200, PETRI_TRANSITIONS=203} [2022-09-16 11:59:18,904 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 62 predicate places. [2022-09-16 11:59:18,904 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 203 transitions, 967 flow [2022-09-16 11:59:18,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.53846153846153) internal successors, (1320), 13 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:18,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:18,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:18,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-16 11:59:19,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:19,106 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:19,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:19,136 INFO L85 PathProgramCache]: Analyzing trace with hash 491376819, now seen corresponding path program 1 times [2022-09-16 11:59:19,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:19,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826496613] [2022-09-16 11:59:19,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:19,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:19,683 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 11:59:19,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:19,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826496613] [2022-09-16 11:59:19,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826496613] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:19,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820742233] [2022-09-16 11:59:19,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:19,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:19,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:19,685 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:19,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:59:19,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:19,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-16 11:59:19,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:20,112 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:59:20,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:20,607 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 11:59:20,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:20,768 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 11:59:20,890 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:59:20,891 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 23 treesize of output 10 [2022-09-16 11:59:20,919 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 11:59:20,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:21,012 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_181 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_181) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 2147483648)) is different from false [2022-09-16 11:59:21,550 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:21,551 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 29 treesize of output 30 [2022-09-16 11:59:21,559 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:21,559 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 158 treesize of output 146 [2022-09-16 11:59:21,562 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 130 treesize of output 106 [2022-09-16 11:59:21,566 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 59 treesize of output 47 [2022-09-16 11:59:22,438 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 11:59:22,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820742233] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:22,438 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:22,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 64 [2022-09-16 11:59:22,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623363360] [2022-09-16 11:59:22,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:22,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-09-16 11:59:22,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-09-16 11:59:22,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=3810, Unknown=5, NotChecked=124, Total=4160 [2022-09-16 11:59:22,442 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 162 [2022-09-16 11:59:22,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 203 transitions, 967 flow. Second operand has 65 states, 65 states have (on average 64.4) internal successors, (4186), 65 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:22,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:22,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 162 [2022-09-16 11:59:22,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:25,106 INFO L130 PetriNetUnfolder]: 1808/5154 cut-off events. [2022-09-16 11:59:25,106 INFO L131 PetriNetUnfolder]: For 9213/10541 co-relation queries the response was YES. [2022-09-16 11:59:25,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15157 conditions, 5154 events. 1808/5154 cut-off events. For 9213/10541 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 44636 event pairs, 243 based on Foata normal form. 189/4943 useless extension candidates. Maximal degree in co-relation 14990. Up to 1843 conditions per place. [2022-09-16 11:59:25,152 INFO L137 encePairwiseOnDemand]: 124/162 looper letters, 129 selfloop transitions, 73 changer transitions 15/273 dead transitions. [2022-09-16 11:59:25,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 273 transitions, 1780 flow [2022-09-16 11:59:25,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 11:59:25,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-09-16 11:59:25,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2248 transitions. [2022-09-16 11:59:25,157 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4081336238198983 [2022-09-16 11:59:25,157 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2248 transitions. [2022-09-16 11:59:25,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2248 transitions. [2022-09-16 11:59:25,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:25,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2248 transitions. [2022-09-16 11:59:25,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 66.11764705882354) internal successors, (2248), 34 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:25,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 162.0) internal successors, (5670), 35 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:25,169 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 162.0) internal successors, (5670), 35 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:25,169 INFO L175 Difference]: Start difference. First operand has 200 places, 203 transitions, 967 flow. Second operand 34 states and 2248 transitions. [2022-09-16 11:59:25,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 273 transitions, 1780 flow [2022-09-16 11:59:25,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 273 transitions, 1656 flow, removed 46 selfloop flow, removed 8 redundant places. [2022-09-16 11:59:25,232 INFO L231 Difference]: Finished difference. Result has 231 places, 231 transitions, 1283 flow [2022-09-16 11:59:25,233 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1283, PETRI_PLACES=231, PETRI_TRANSITIONS=231} [2022-09-16 11:59:25,233 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 93 predicate places. [2022-09-16 11:59:25,233 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 231 transitions, 1283 flow [2022-09-16 11:59:25,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 64.4) internal successors, (4186), 65 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:25,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:25,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:25,255 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 11:59:25,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:25,435 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:25,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:25,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2055084621, now seen corresponding path program 2 times [2022-09-16 11:59:25,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:25,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917678865] [2022-09-16 11:59:25,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:25,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:25,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:25,768 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 11:59:25,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:25,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917678865] [2022-09-16 11:59:25,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917678865] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:25,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882737758] [2022-09-16 11:59:25,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:25,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:25,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:25,770 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:25,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:59:25,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:25,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:25,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:59:25,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:25,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:59:25,948 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 11:59:25,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:25,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882737758] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:25,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:25,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2022-09-16 11:59:25,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247849880] [2022-09-16 11:59:25,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:25,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:25,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:25,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:25,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-09-16 11:59:25,950 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 11:59:25,951 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 231 transitions, 1283 flow. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:25,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:25,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 11:59:25,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:26,692 INFO L130 PetriNetUnfolder]: 1950/5577 cut-off events. [2022-09-16 11:59:26,693 INFO L131 PetriNetUnfolder]: For 18883/25593 co-relation queries the response was YES. [2022-09-16 11:59:26,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17945 conditions, 5577 events. 1950/5577 cut-off events. For 18883/25593 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 49808 event pairs, 454 based on Foata normal form. 72/5212 useless extension candidates. Maximal degree in co-relation 17787. Up to 3021 conditions per place. [2022-09-16 11:59:26,729 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 127 selfloop transitions, 17 changer transitions 1/262 dead transitions. [2022-09-16 11:59:26,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 262 transitions, 1770 flow [2022-09-16 11:59:26,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:59:26,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:59:26,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 755 transitions. [2022-09-16 11:59:26,730 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7767489711934157 [2022-09-16 11:59:26,731 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 755 transitions. [2022-09-16 11:59:26,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 755 transitions. [2022-09-16 11:59:26,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:26,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 755 transitions. [2022-09-16 11:59:26,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.83333333333333) internal successors, (755), 6 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:26,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:26,733 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:26,733 INFO L175 Difference]: Start difference. First operand has 231 places, 231 transitions, 1283 flow. Second operand 6 states and 755 transitions. [2022-09-16 11:59:26,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 262 transitions, 1770 flow [2022-09-16 11:59:26,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 262 transitions, 1669 flow, removed 24 selfloop flow, removed 26 redundant places. [2022-09-16 11:59:26,783 INFO L231 Difference]: Finished difference. Result has 210 places, 238 transitions, 1316 flow [2022-09-16 11:59:26,784 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1192, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1316, PETRI_PLACES=210, PETRI_TRANSITIONS=238} [2022-09-16 11:59:26,784 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 72 predicate places. [2022-09-16 11:59:26,784 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 238 transitions, 1316 flow [2022-09-16 11:59:26,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:26,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:26,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:26,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-09-16 11:59:26,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:26,999 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:27,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash 2140576823, now seen corresponding path program 3 times [2022-09-16 11:59:27,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:27,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999298776] [2022-09-16 11:59:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:27,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:27,410 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 11:59:27,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:27,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999298776] [2022-09-16 11:59:27,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999298776] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:27,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686995133] [2022-09-16 11:59:27,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:59:27,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:27,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:27,412 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:27,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:59:27,478 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:59:27,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:27,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:59:27,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:27,662 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:59:27,663 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 23 treesize of output 10 [2022-09-16 11:59:27,677 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 11:59:27,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:27,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686995133] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:27,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:27,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 20 [2022-09-16 11:59:27,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548555112] [2022-09-16 11:59:27,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:27,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:27,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:27,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:27,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-09-16 11:59:27,679 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 11:59:27,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 238 transitions, 1316 flow. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:27,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:27,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 11:59:27,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:28,325 INFO L130 PetriNetUnfolder]: 2058/5767 cut-off events. [2022-09-16 11:59:28,326 INFO L131 PetriNetUnfolder]: For 16995/21218 co-relation queries the response was YES. [2022-09-16 11:59:28,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18316 conditions, 5767 events. 2058/5767 cut-off events. For 16995/21218 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 51801 event pairs, 602 based on Foata normal form. 70/5306 useless extension candidates. Maximal degree in co-relation 18177. Up to 3461 conditions per place. [2022-09-16 11:59:28,361 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 126 selfloop transitions, 17 changer transitions 1/261 dead transitions. [2022-09-16 11:59:28,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 261 transitions, 1754 flow [2022-09-16 11:59:28,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:59:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:59:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2022-09-16 11:59:28,363 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7705761316872428 [2022-09-16 11:59:28,363 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2022-09-16 11:59:28,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2022-09-16 11:59:28,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:28,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2022-09-16 11:59:28,364 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:28,365 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:28,365 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:28,365 INFO L175 Difference]: Start difference. First operand has 210 places, 238 transitions, 1316 flow. Second operand 6 states and 749 transitions. [2022-09-16 11:59:28,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 261 transitions, 1754 flow [2022-09-16 11:59:28,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 261 transitions, 1717 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:28,395 INFO L231 Difference]: Finished difference. Result has 217 places, 245 transitions, 1408 flow [2022-09-16 11:59:28,395 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1408, PETRI_PLACES=217, PETRI_TRANSITIONS=245} [2022-09-16 11:59:28,396 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 79 predicate places. [2022-09-16 11:59:28,396 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 245 transitions, 1408 flow [2022-09-16 11:59:28,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:28,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:28,397 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:28,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:28,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-16 11:59:28,611 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:28,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:28,612 INFO L85 PathProgramCache]: Analyzing trace with hash 506604634, now seen corresponding path program 1 times [2022-09-16 11:59:28,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:28,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188454373] [2022-09-16 11:59:28,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:28,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:59:28,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:28,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188454373] [2022-09-16 11:59:28,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188454373] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:28,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905543478] [2022-09-16 11:59:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:28,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:28,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:28,648 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:28,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:59:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:28,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:59:28,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:28,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:28,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905543478] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:28,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:28,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-09-16 11:59:28,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952904125] [2022-09-16 11:59:28,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:28,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:59:28,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:28,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:59:28,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:59:28,974 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 162 [2022-09-16 11:59:28,975 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 245 transitions, 1408 flow. Second operand has 19 states, 19 states have (on average 113.36842105263158) internal successors, (2154), 19 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:28,975 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:28,975 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 162 [2022-09-16 11:59:28,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:30,178 INFO L130 PetriNetUnfolder]: 1631/6012 cut-off events. [2022-09-16 11:59:30,178 INFO L131 PetriNetUnfolder]: For 17253/18232 co-relation queries the response was YES. [2022-09-16 11:59:30,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19659 conditions, 6012 events. 1631/6012 cut-off events. For 17253/18232 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 57865 event pairs, 124 based on Foata normal form. 285/5831 useless extension candidates. Maximal degree in co-relation 19507. Up to 1184 conditions per place. [2022-09-16 11:59:30,217 INFO L137 encePairwiseOnDemand]: 144/162 looper letters, 184 selfloop transitions, 36 changer transitions 0/351 dead transitions. [2022-09-16 11:59:30,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 351 transitions, 2677 flow [2022-09-16 11:59:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:59:30,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-09-16 11:59:30,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2508 transitions. [2022-09-16 11:59:30,221 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-09-16 11:59:30,221 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2508 transitions. [2022-09-16 11:59:30,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2508 transitions. [2022-09-16 11:59:30,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:30,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2508 transitions. [2022-09-16 11:59:30,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 114.0) internal successors, (2508), 22 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:30,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 162.0) internal successors, (3726), 23 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:30,228 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 162.0) internal successors, (3726), 23 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:30,228 INFO L175 Difference]: Start difference. First operand has 217 places, 245 transitions, 1408 flow. Second operand 22 states and 2508 transitions. [2022-09-16 11:59:30,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 351 transitions, 2677 flow [2022-09-16 11:59:30,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 351 transitions, 2620 flow, removed 20 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:30,274 INFO L231 Difference]: Finished difference. Result has 243 places, 249 transitions, 1543 flow [2022-09-16 11:59:30,274 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1304, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1543, PETRI_PLACES=243, PETRI_TRANSITIONS=249} [2022-09-16 11:59:30,274 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 105 predicate places. [2022-09-16 11:59:30,274 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 249 transitions, 1543 flow [2022-09-16 11:59:30,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 113.36842105263158) internal successors, (2154), 19 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:30,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:30,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:30,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:30,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-16 11:59:30,491 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:30,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:30,492 INFO L85 PathProgramCache]: Analyzing trace with hash 840789581, now seen corresponding path program 1 times [2022-09-16 11:59:30,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:30,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156565160] [2022-09-16 11:59:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:30,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:30,853 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 11:59:30,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:30,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156565160] [2022-09-16 11:59:30,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156565160] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:30,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79795829] [2022-09-16 11:59:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:30,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:30,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:30,855 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:30,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:59:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:30,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 39 conjunts are in the unsatisfiable core [2022-09-16 11:59:30,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:30,940 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 11:59:31,125 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:59:31,125 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 11:59:31,246 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 15 treesize of output 11 [2022-09-16 11:59:31,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:31,718 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 20 treesize of output 22 [2022-09-16 11:59:31,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:59:31,949 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:59:31,950 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 25 treesize of output 12 [2022-09-16 11:59:31,971 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 11:59:31,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:32,472 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:32,472 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 11:59:32,479 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:32,479 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 174 treesize of output 162 [2022-09-16 11:59:32,483 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 146 treesize of output 122 [2022-09-16 11:59:32,487 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 67 treesize of output 55 [2022-09-16 11:59:33,665 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 11:59:33,693 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 11:59:33,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79795829] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:33,694 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:33,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-09-16 11:59:33,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516682212] [2022-09-16 11:59:33,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:33,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-09-16 11:59:33,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:33,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-09-16 11:59:33,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=3168, Unknown=9, NotChecked=0, Total=3422 [2022-09-16 11:59:33,698 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-09-16 11:59:33,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 249 transitions, 1543 flow. Second operand has 59 states, 59 states have (on average 81.1864406779661) internal successors, (4790), 59 states have internal predecessors, (4790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:33,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:33,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-09-16 11:59:33,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:36,245 INFO L130 PetriNetUnfolder]: 2690/8585 cut-off events. [2022-09-16 11:59:36,245 INFO L131 PetriNetUnfolder]: For 26965/30484 co-relation queries the response was YES. [2022-09-16 11:59:36,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28392 conditions, 8585 events. 2690/8585 cut-off events. For 26965/30484 co-relation queries the response was YES. Maximal size of possible extension queue 340. Compared 88158 event pairs, 316 based on Foata normal form. 443/8570 useless extension candidates. Maximal degree in co-relation 28208. Up to 3396 conditions per place. [2022-09-16 11:59:36,339 INFO L137 encePairwiseOnDemand]: 126/162 looper letters, 148 selfloop transitions, 108 changer transitions 17/347 dead transitions. [2022-09-16 11:59:36,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 347 transitions, 2842 flow [2022-09-16 11:59:36,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-16 11:59:36,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-16 11:59:36,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2666 transitions. [2022-09-16 11:59:36,342 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5142746913580247 [2022-09-16 11:59:36,342 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2666 transitions. [2022-09-16 11:59:36,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2666 transitions. [2022-09-16 11:59:36,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:36,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2666 transitions. [2022-09-16 11:59:36,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 83.3125) internal successors, (2666), 32 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:36,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 162.0) internal successors, (5346), 33 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:36,351 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 162.0) internal successors, (5346), 33 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:36,352 INFO L175 Difference]: Start difference. First operand has 243 places, 249 transitions, 1543 flow. Second operand 32 states and 2666 transitions. [2022-09-16 11:59:36,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 347 transitions, 2842 flow [2022-09-16 11:59:36,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 347 transitions, 2806 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-09-16 11:59:36,439 INFO L231 Difference]: Finished difference. Result has 269 places, 302 transitions, 2459 flow [2022-09-16 11:59:36,439 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1507, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=2459, PETRI_PLACES=269, PETRI_TRANSITIONS=302} [2022-09-16 11:59:36,439 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 131 predicate places. [2022-09-16 11:59:36,440 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 302 transitions, 2459 flow [2022-09-16 11:59:36,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 81.1864406779661) internal successors, (4790), 59 states have internal predecessors, (4790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:36,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:36,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:36,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-09-16 11:59:36,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-16 11:59:36,655 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:36,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:36,656 INFO L85 PathProgramCache]: Analyzing trace with hash -716885611, now seen corresponding path program 2 times [2022-09-16 11:59:36,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:36,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141258138] [2022-09-16 11:59:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:36,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:36,900 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 11:59:36,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:36,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141258138] [2022-09-16 11:59:36,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141258138] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:36,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174581923] [2022-09-16 11:59:36,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:36,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:36,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:36,902 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:36,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:59:36,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:36,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:36,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:59:36,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:37,134 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:59:37,135 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 23 treesize of output 10 [2022-09-16 11:59:37,150 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 11:59:37,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:37,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174581923] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:37,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:37,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 11:59:37,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234804914] [2022-09-16 11:59:37,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:37,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:37,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:37,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:37,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:59:37,151 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 11:59:37,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 302 transitions, 2459 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:37,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:37,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 11:59:37,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:38,404 INFO L130 PetriNetUnfolder]: 2693/8644 cut-off events. [2022-09-16 11:59:38,404 INFO L131 PetriNetUnfolder]: For 45677/55808 co-relation queries the response was YES. [2022-09-16 11:59:38,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33072 conditions, 8644 events. 2693/8644 cut-off events. For 45677/55808 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 89338 event pairs, 885 based on Foata normal form. 370/8689 useless extension candidates. Maximal degree in co-relation 32898. Up to 5036 conditions per place. [2022-09-16 11:59:38,460 INFO L137 encePairwiseOnDemand]: 153/162 looper letters, 171 selfloop transitions, 30 changer transitions 1/328 dead transitions. [2022-09-16 11:59:38,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 328 transitions, 3067 flow [2022-09-16 11:59:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:59:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:59:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 752 transitions. [2022-09-16 11:59:38,462 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7736625514403292 [2022-09-16 11:59:38,462 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 752 transitions. [2022-09-16 11:59:38,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 752 transitions. [2022-09-16 11:59:38,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:38,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 752 transitions. [2022-09-16 11:59:38,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:38,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:38,464 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:38,464 INFO L175 Difference]: Start difference. First operand has 269 places, 302 transitions, 2459 flow. Second operand 6 states and 752 transitions. [2022-09-16 11:59:38,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 328 transitions, 3067 flow [2022-09-16 11:59:38,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 328 transitions, 2979 flow, removed 18 selfloop flow, removed 23 redundant places. [2022-09-16 11:59:38,681 INFO L231 Difference]: Finished difference. Result has 252 places, 309 transitions, 2540 flow [2022-09-16 11:59:38,681 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2540, PETRI_PLACES=252, PETRI_TRANSITIONS=309} [2022-09-16 11:59:38,682 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 114 predicate places. [2022-09-16 11:59:38,682 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 309 transitions, 2540 flow [2022-09-16 11:59:38,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:38,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:38,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:38,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:38,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:59:38,895 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 962012433, now seen corresponding path program 1 times [2022-09-16 11:59:38,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:38,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369360773] [2022-09-16 11:59:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:38,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:38,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:39,414 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 11:59:39,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:39,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369360773] [2022-09-16 11:59:39,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369360773] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:39,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992188463] [2022-09-16 11:59:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:39,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:39,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:39,415 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:39,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 11:59:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:39,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-16 11:59:39,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:39,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:59:40,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:40,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:59:40,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:59:40,415 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:59:40,526 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:59:40,526 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 25 treesize of output 12 [2022-09-16 11:59:40,558 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 11:59:40,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:40,654 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_330 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_330) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) is different from false [2022-09-16 11:59:41,136 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:41,136 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 11:59:41,142 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:59:41,142 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 174 treesize of output 162 [2022-09-16 11:59:41,145 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 146 treesize of output 134 [2022-09-16 11:59:41,148 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 134 treesize of output 110 [2022-09-16 11:59:41,999 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 11:59:41,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992188463] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:41,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:41,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 62 [2022-09-16 11:59:41,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726109689] [2022-09-16 11:59:41,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:42,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-09-16 11:59:42,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:42,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-09-16 11:59:42,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3556, Unknown=6, NotChecked=120, Total=3906 [2022-09-16 11:59:42,003 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-09-16 11:59:42,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 309 transitions, 2540 flow. Second operand has 63 states, 63 states have (on average 81.04761904761905) internal successors, (5106), 63 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:42,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:42,005 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-09-16 11:59:42,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:45,050 INFO L130 PetriNetUnfolder]: 2714/8863 cut-off events. [2022-09-16 11:59:45,051 INFO L131 PetriNetUnfolder]: For 52860/68485 co-relation queries the response was YES. [2022-09-16 11:59:45,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34794 conditions, 8863 events. 2714/8863 cut-off events. For 52860/68485 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 92137 event pairs, 474 based on Foata normal form. 1447/9839 useless extension candidates. Maximal degree in co-relation 34606. Up to 2495 conditions per place. [2022-09-16 11:59:45,243 INFO L137 encePairwiseOnDemand]: 130/162 looper letters, 162 selfloop transitions, 117 changer transitions 1/354 dead transitions. [2022-09-16 11:59:45,243 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 354 transitions, 3448 flow [2022-09-16 11:59:45,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-09-16 11:59:45,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-09-16 11:59:45,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2571 transitions. [2022-09-16 11:59:45,246 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.51194743130227 [2022-09-16 11:59:45,246 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2571 transitions. [2022-09-16 11:59:45,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2571 transitions. [2022-09-16 11:59:45,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:45,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2571 transitions. [2022-09-16 11:59:45,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 82.93548387096774) internal successors, (2571), 31 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:45,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 162.0) internal successors, (5184), 32 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:45,254 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 162.0) internal successors, (5184), 32 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:45,255 INFO L175 Difference]: Start difference. First operand has 252 places, 309 transitions, 2540 flow. Second operand 31 states and 2571 transitions. [2022-09-16 11:59:45,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 354 transitions, 3448 flow [2022-09-16 11:59:45,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 354 transitions, 3419 flow, removed 7 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:45,373 INFO L231 Difference]: Finished difference. Result has 286 places, 325 transitions, 3007 flow [2022-09-16 11:59:45,374 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=3007, PETRI_PLACES=286, PETRI_TRANSITIONS=325} [2022-09-16 11:59:45,374 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 148 predicate places. [2022-09-16 11:59:45,374 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 325 transitions, 3007 flow [2022-09-16 11:59:45,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 81.04761904761905) internal successors, (5106), 63 states have internal predecessors, (5106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:45,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:45,375 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:45,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:45,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:59:45,582 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:45,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash 350874381, now seen corresponding path program 3 times [2022-09-16 11:59:45,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:45,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995163506] [2022-09-16 11:59:45,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:45,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:46,093 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 11:59:46,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:46,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995163506] [2022-09-16 11:59:46,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995163506] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:46,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933678058] [2022-09-16 11:59:46,094 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:59:46,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:46,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:46,095 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:46,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 11:59:46,160 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:59:46,160 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:46,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:59:46,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:46,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:59:46,287 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 11:59:46,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:46,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933678058] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:46,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:46,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2022-09-16 11:59:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428261150] [2022-09-16 11:59:46,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:46,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:46,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:46,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-09-16 11:59:46,290 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 11:59:46,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 325 transitions, 3007 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:46,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:46,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 11:59:46,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:47,799 INFO L130 PetriNetUnfolder]: 2739/8989 cut-off events. [2022-09-16 11:59:47,799 INFO L131 PetriNetUnfolder]: For 61093/76993 co-relation queries the response was YES. [2022-09-16 11:59:47,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37969 conditions, 8989 events. 2739/8989 cut-off events. For 61093/76993 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 93842 event pairs, 816 based on Foata normal form. 400/8845 useless extension candidates. Maximal degree in co-relation 37786. Up to 5021 conditions per place. [2022-09-16 11:59:47,885 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 195 selfloop transitions, 25 changer transitions 1/347 dead transitions. [2022-09-16 11:59:47,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 347 transitions, 3646 flow [2022-09-16 11:59:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:59:47,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:59:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 750 transitions. [2022-09-16 11:59:47,886 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7716049382716049 [2022-09-16 11:59:47,886 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 750 transitions. [2022-09-16 11:59:47,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 750 transitions. [2022-09-16 11:59:47,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:47,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 750 transitions. [2022-09-16 11:59:47,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:47,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:47,888 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:47,888 INFO L175 Difference]: Start difference. First operand has 286 places, 325 transitions, 3007 flow. Second operand 6 states and 750 transitions. [2022-09-16 11:59:47,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 347 transitions, 3646 flow [2022-09-16 11:59:48,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 347 transitions, 3561 flow, removed 20 selfloop flow, removed 21 redundant places. [2022-09-16 11:59:48,107 INFO L231 Difference]: Finished difference. Result has 271 places, 326 transitions, 3002 flow [2022-09-16 11:59:48,107 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3002, PETRI_PLACES=271, PETRI_TRANSITIONS=326} [2022-09-16 11:59:48,107 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 133 predicate places. [2022-09-16 11:59:48,107 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 326 transitions, 3002 flow [2022-09-16 11:59:48,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:48,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:48,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:48,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:48,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-16 11:59:48,309 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:48,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:48,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1627263865, now seen corresponding path program 2 times [2022-09-16 11:59:48,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:48,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433864216] [2022-09-16 11:59:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:48,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:48,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:48,901 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 11:59:48,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:48,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433864216] [2022-09-16 11:59:48,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433864216] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:48,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663008968] [2022-09-16 11:59:48,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:48,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:48,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:48,902 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:48,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-16 11:59:48,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:48,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:48,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:59:48,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:49,074 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:59:49,094 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 11:59:49,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:49,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663008968] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:49,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:49,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23] total 27 [2022-09-16 11:59:49,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544256592] [2022-09-16 11:59:49,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:49,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:49,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-09-16 11:59:49,096 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 11:59:49,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 326 transitions, 3002 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:49,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:49,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 11:59:49,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:51,213 INFO L130 PetriNetUnfolder]: 4048/13094 cut-off events. [2022-09-16 11:59:51,213 INFO L131 PetriNetUnfolder]: For 96298/120054 co-relation queries the response was YES. [2022-09-16 11:59:51,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57075 conditions, 13094 events. 4048/13094 cut-off events. For 96298/120054 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 148332 event pairs, 1145 based on Foata normal form. 1425/13790 useless extension candidates. Maximal degree in co-relation 56905. Up to 5466 conditions per place. [2022-09-16 11:59:51,417 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 284 selfloop transitions, 30 changer transitions 0/440 dead transitions. [2022-09-16 11:59:51,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 440 transitions, 5103 flow [2022-09-16 11:59:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:59:51,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:59:51,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 761 transitions. [2022-09-16 11:59:51,418 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7829218106995884 [2022-09-16 11:59:51,419 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 761 transitions. [2022-09-16 11:59:51,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 761 transitions. [2022-09-16 11:59:51,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:51,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 761 transitions. [2022-09-16 11:59:51,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:51,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:51,421 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:51,421 INFO L175 Difference]: Start difference. First operand has 271 places, 326 transitions, 3002 flow. Second operand 6 states and 761 transitions. [2022-09-16 11:59:51,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 440 transitions, 5103 flow [2022-09-16 11:59:51,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 440 transitions, 5063 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-09-16 11:59:51,746 INFO L231 Difference]: Finished difference. Result has 276 places, 335 transitions, 3206 flow [2022-09-16 11:59:51,746 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2962, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3206, PETRI_PLACES=276, PETRI_TRANSITIONS=335} [2022-09-16 11:59:51,747 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 138 predicate places. [2022-09-16 11:59:51,747 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 335 transitions, 3206 flow [2022-09-16 11:59:51,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:51,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:51,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:51,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-09-16 11:59:51,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:51,948 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:51,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:51,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1098884883, now seen corresponding path program 3 times [2022-09-16 11:59:51,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:51,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923772276] [2022-09-16 11:59:51,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:51,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:51,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:52,434 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 11:59:52,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:52,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923772276] [2022-09-16 11:59:52,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923772276] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:52,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508736620] [2022-09-16 11:59:52,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:59:52,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:52,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:52,436 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:52,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-09-16 11:59:52,509 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:59:52,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:52,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:59:52,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:52,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:59:52,688 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 11:59:52,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:59:52,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508736620] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:59:52,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:59:52,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [17] total 21 [2022-09-16 11:59:52,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413950967] [2022-09-16 11:59:52,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:59:52,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:59:52,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:52,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:59:52,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:59:52,690 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 11:59:52,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 335 transitions, 3206 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:52,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:52,691 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 11:59:52,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:59:55,515 INFO L130 PetriNetUnfolder]: 4970/15913 cut-off events. [2022-09-16 11:59:55,515 INFO L131 PetriNetUnfolder]: For 125468/148200 co-relation queries the response was YES. [2022-09-16 11:59:55,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71854 conditions, 15913 events. 4970/15913 cut-off events. For 125468/148200 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 187804 event pairs, 1533 based on Foata normal form. 1124/16458 useless extension candidates. Maximal degree in co-relation 71681. Up to 8042 conditions per place. [2022-09-16 11:59:55,668 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 257 selfloop transitions, 23 changer transitions 0/406 dead transitions. [2022-09-16 11:59:55,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 406 transitions, 4700 flow [2022-09-16 11:59:55,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:59:55,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:59:55,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 754 transitions. [2022-09-16 11:59:55,669 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7757201646090535 [2022-09-16 11:59:55,669 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 754 transitions. [2022-09-16 11:59:55,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 754 transitions. [2022-09-16 11:59:55,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:59:55,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 754 transitions. [2022-09-16 11:59:55,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:55,671 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:55,671 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:55,671 INFO L175 Difference]: Start difference. First operand has 276 places, 335 transitions, 3206 flow. Second operand 6 states and 754 transitions. [2022-09-16 11:59:55,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 406 transitions, 4700 flow [2022-09-16 11:59:56,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 406 transitions, 4659 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-09-16 11:59:56,221 INFO L231 Difference]: Finished difference. Result has 281 places, 338 transitions, 3291 flow [2022-09-16 11:59:56,221 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3165, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3291, PETRI_PLACES=281, PETRI_TRANSITIONS=338} [2022-09-16 11:59:56,222 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 143 predicate places. [2022-09-16 11:59:56,222 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 338 transitions, 3291 flow [2022-09-16 11:59:56,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:56,222 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:59:56,222 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:59:56,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-09-16 11:59:56,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:56,423 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:59:56,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:59:56,423 INFO L85 PathProgramCache]: Analyzing trace with hash -463962155, now seen corresponding path program 2 times [2022-09-16 11:59:56,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:59:56,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306241752] [2022-09-16 11:59:56,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:59:56,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:59:56,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:59:56,493 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:59:56,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:59:56,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306241752] [2022-09-16 11:59:56,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306241752] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:59:56,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949165075] [2022-09-16 11:59:56,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:59:56,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:59:56,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:59:56,495 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:59:56,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-09-16 11:59:56,554 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:59:56,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:59:56,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:59:56,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:59:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:59:56,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:59:56,726 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:59:56,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949165075] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:59:56,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:59:56,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:59:56,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761727148] [2022-09-16 11:59:56,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:59:56,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:59:56,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:59:56,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:59:56,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:59:56,728 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 162 [2022-09-16 11:59:56,729 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 338 transitions, 3291 flow. Second operand has 18 states, 18 states have (on average 121.61111111111111) internal successors, (2189), 18 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:59:56,729 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:59:56,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 162 [2022-09-16 11:59:56,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:00:00,029 INFO L130 PetriNetUnfolder]: 4165/18268 cut-off events. [2022-09-16 12:00:00,029 INFO L131 PetriNetUnfolder]: For 150249/163965 co-relation queries the response was YES. [2022-09-16 12:00:00,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77183 conditions, 18268 events. 4165/18268 cut-off events. For 150249/163965 co-relation queries the response was YES. Maximal size of possible extension queue 541. Compared 229445 event pairs, 183 based on Foata normal form. 765/18543 useless extension candidates. Maximal degree in co-relation 77004. Up to 4080 conditions per place. [2022-09-16 12:00:00,196 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 580 selfloop transitions, 25 changer transitions 0/786 dead transitions. [2022-09-16 12:00:00,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 786 transitions, 11047 flow [2022-09-16 12:00:00,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 12:00:00,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 12:00:00,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2931 transitions. [2022-09-16 12:00:00,199 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.753858024691358 [2022-09-16 12:00:00,199 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2931 transitions. [2022-09-16 12:00:00,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2931 transitions. [2022-09-16 12:00:00,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:00:00,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2931 transitions. [2022-09-16 12:00:00,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 122.125) internal successors, (2931), 24 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:00,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 162.0) internal successors, (4050), 25 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:00,205 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 162.0) internal successors, (4050), 25 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:00,205 INFO L175 Difference]: Start difference. First operand has 281 places, 338 transitions, 3291 flow. Second operand 24 states and 2931 transitions. [2022-09-16 12:00:00,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 786 transitions, 11047 flow [2022-09-16 12:00:00,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 786 transitions, 10883 flow, removed 40 selfloop flow, removed 7 redundant places. [2022-09-16 12:00:00,795 INFO L231 Difference]: Finished difference. Result has 297 places, 342 transitions, 3312 flow [2022-09-16 12:00:00,795 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3225, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3312, PETRI_PLACES=297, PETRI_TRANSITIONS=342} [2022-09-16 12:00:00,796 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 159 predicate places. [2022-09-16 12:00:00,796 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 342 transitions, 3312 flow [2022-09-16 12:00:00,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 121.61111111111111) internal successors, (2189), 18 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:00,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:00:00,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:00:00,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-09-16 12:00:00,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:00,997 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:00:00,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:00:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1967737295, now seen corresponding path program 1 times [2022-09-16 12:00:00,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:00:00,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247910301] [2022-09-16 12:00:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:00:00,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:00:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:00:01,584 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 12:00:01,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:00:01,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247910301] [2022-09-16 12:00:01,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247910301] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:00:01,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045064486] [2022-09-16 12:00:01,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:00:01,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:01,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:00:01,586 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:00:01,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-09-16 12:00:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:00:01,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-16 12:00:01,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:00:01,985 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 12:00:02,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:00:02,518 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 12:00:02,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:00:02,678 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 12:00:02,795 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 12:00:02,795 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 23 treesize of output 10 [2022-09-16 12:00:02,824 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 12:00:02,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:00:02,914 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_462 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_462) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 2147483648)) is different from false [2022-09-16 12:00:03,379 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:00:03,380 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 29 treesize of output 30 [2022-09-16 12:00:03,386 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:00:03,386 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 80 treesize of output 76 [2022-09-16 12:00:03,389 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 60 treesize of output 48 [2022-09-16 12:00:03,392 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 26 treesize of output 20 [2022-09-16 12:00:04,175 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 12:00:04,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045064486] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:00:04,176 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:00:04,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-09-16 12:00:04,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952623747] [2022-09-16 12:00:04,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:00:04,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-09-16 12:00:04,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:00:04,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-09-16 12:00:04,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=3654, Unknown=5, NotChecked=122, Total=4032 [2022-09-16 12:00:04,179 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-09-16 12:00:04,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 342 transitions, 3312 flow. Second operand has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:04,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:00:04,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-09-16 12:00:04,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:00:11,487 INFO L130 PetriNetUnfolder]: 8845/28629 cut-off events. [2022-09-16 12:00:11,487 INFO L131 PetriNetUnfolder]: For 221071/262175 co-relation queries the response was YES. [2022-09-16 12:00:11,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129528 conditions, 28629 events. 8845/28629 cut-off events. For 221071/262175 co-relation queries the response was YES. Maximal size of possible extension queue 872. Compared 353977 event pairs, 947 based on Foata normal form. 3636/31464 useless extension candidates. Maximal degree in co-relation 126767. Up to 11292 conditions per place. [2022-09-16 12:00:11,925 INFO L137 encePairwiseOnDemand]: 129/162 looper letters, 185 selfloop transitions, 142 changer transitions 0/401 dead transitions. [2022-09-16 12:00:11,925 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 401 transitions, 4655 flow [2022-09-16 12:00:11,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 12:00:11,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 12:00:11,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2490 transitions. [2022-09-16 12:00:11,928 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2022-09-16 12:00:11,928 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2490 transitions. [2022-09-16 12:00:11,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2490 transitions. [2022-09-16 12:00:11,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:00:11,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2490 transitions. [2022-09-16 12:00:11,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 83.0) internal successors, (2490), 30 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:11,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 162.0) internal successors, (5022), 31 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:11,934 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 162.0) internal successors, (5022), 31 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:11,935 INFO L175 Difference]: Start difference. First operand has 297 places, 342 transitions, 3312 flow. Second operand 30 states and 2490 transitions. [2022-09-16 12:00:11,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 401 transitions, 4655 flow [2022-09-16 12:00:13,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 401 transitions, 4591 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-09-16 12:00:13,389 INFO L231 Difference]: Finished difference. Result has 313 places, 377 transitions, 4255 flow [2022-09-16 12:00:13,390 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3248, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4255, PETRI_PLACES=313, PETRI_TRANSITIONS=377} [2022-09-16 12:00:13,390 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 175 predicate places. [2022-09-16 12:00:13,390 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 377 transitions, 4255 flow [2022-09-16 12:00:13,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:13,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:00:13,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:00:13,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-09-16 12:00:13,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:13,592 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:00:13,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:00:13,592 INFO L85 PathProgramCache]: Analyzing trace with hash 189430577, now seen corresponding path program 1 times [2022-09-16 12:00:13,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:00:13,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919419062] [2022-09-16 12:00:13,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:00:13,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:00:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:00:13,856 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 12:00:13,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:00:13,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919419062] [2022-09-16 12:00:13,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919419062] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:00:13,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924059250] [2022-09-16 12:00:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:00:13,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:13,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:00:13,860 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:00:13,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-09-16 12:00:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:00:13,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 12:00:13,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:00:13,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:00:14,167 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:00:14,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:00:14,267 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 15 treesize of output 11 [2022-09-16 12:00:14,528 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:00:14,572 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 6 treesize of output 5 [2022-09-16 12:00:14,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 12:00:14,698 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 12:00:14,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:00:15,404 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:00:15,405 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 60 treesize of output 48 [2022-09-16 12:00:15,414 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 12:00:15,416 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 140 treesize of output 131 [2022-09-16 12:00:15,424 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 12:00:15,425 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 85 [2022-09-16 12:00:15,437 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 12:00:15,438 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 112 treesize of output 88 [2022-09-16 12:00:16,000 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 12:00:16,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924059250] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:00:16,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:00:16,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 18] total 52 [2022-09-16 12:00:16,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6142220] [2022-09-16 12:00:16,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:00:16,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-09-16 12:00:16,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:00:16,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-09-16 12:00:16,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2267, Unknown=31, NotChecked=0, Total=2756 [2022-09-16 12:00:16,010 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 162 [2022-09-16 12:00:16,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 377 transitions, 4255 flow. Second operand has 53 states, 53 states have (on average 83.24528301886792) internal successors, (4412), 53 states have internal predecessors, (4412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:16,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:00:16,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 162 [2022-09-16 12:00:16,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:00:23,267 INFO L130 PetriNetUnfolder]: 8710/28213 cut-off events. [2022-09-16 12:00:23,267 INFO L131 PetriNetUnfolder]: For 283636/318910 co-relation queries the response was YES. [2022-09-16 12:00:23,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139854 conditions, 28213 events. 8710/28213 cut-off events. For 283636/318910 co-relation queries the response was YES. Maximal size of possible extension queue 845. Compared 349191 event pairs, 1752 based on Foata normal form. 3555/31083 useless extension candidates. Maximal degree in co-relation 134190. Up to 6700 conditions per place. [2022-09-16 12:00:23,693 INFO L137 encePairwiseOnDemand]: 135/162 looper letters, 284 selfloop transitions, 184 changer transitions 0/546 dead transitions. [2022-09-16 12:00:23,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 546 transitions, 7486 flow [2022-09-16 12:00:23,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 12:00:23,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 12:00:23,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2598 transitions. [2022-09-16 12:00:23,696 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5345679012345679 [2022-09-16 12:00:23,696 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2598 transitions. [2022-09-16 12:00:23,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2598 transitions. [2022-09-16 12:00:23,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:00:23,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2598 transitions. [2022-09-16 12:00:23,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 86.6) internal successors, (2598), 30 states have internal predecessors, (2598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:23,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 162.0) internal successors, (5022), 31 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:23,702 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 162.0) internal successors, (5022), 31 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:23,702 INFO L175 Difference]: Start difference. First operand has 313 places, 377 transitions, 4255 flow. Second operand 30 states and 2598 transitions. [2022-09-16 12:00:23,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 546 transitions, 7486 flow [2022-09-16 12:00:26,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 546 transitions, 7303 flow, removed 68 selfloop flow, removed 22 redundant places. [2022-09-16 12:00:26,283 INFO L231 Difference]: Finished difference. Result has 328 places, 449 transitions, 6133 flow [2022-09-16 12:00:26,283 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=4126, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6133, PETRI_PLACES=328, PETRI_TRANSITIONS=449} [2022-09-16 12:00:26,283 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 190 predicate places. [2022-09-16 12:00:26,283 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 449 transitions, 6133 flow [2022-09-16 12:00:26,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 83.24528301886792) internal successors, (4412), 53 states have internal predecessors, (4412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:26,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:00:26,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:00:26,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-09-16 12:00:26,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:26,485 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:00:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:00:26,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1290178993, now seen corresponding path program 2 times [2022-09-16 12:00:26,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:00:26,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297769228] [2022-09-16 12:00:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:00:26,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:00:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:00:26,862 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 12:00:26,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:00:26,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297769228] [2022-09-16 12:00:26,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297769228] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:00:26,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107732301] [2022-09-16 12:00:26,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:00:26,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:26,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:00:26,864 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:00:26,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-09-16 12:00:26,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:00:26,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:00:26,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 12:00:26,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:00:27,076 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 12:00:27,091 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 12:00:27,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:00:27,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107732301] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:00:27,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:00:27,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2022-09-16 12:00:27,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228141266] [2022-09-16 12:00:27,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:00:27,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:00:27,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:00:27,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:00:27,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-09-16 12:00:27,093 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 12:00:27,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 449 transitions, 6133 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:27,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:00:27,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 12:00:27,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:00:33,141 INFO L130 PetriNetUnfolder]: 8657/27686 cut-off events. [2022-09-16 12:00:33,141 INFO L131 PetriNetUnfolder]: For 372325/431494 co-relation queries the response was YES. [2022-09-16 12:00:33,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147238 conditions, 27686 events. 8657/27686 cut-off events. For 372325/431494 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 340988 event pairs, 2353 based on Foata normal form. 1150/28055 useless extension candidates. Maximal degree in co-relation 145041. Up to 16784 conditions per place. [2022-09-16 12:00:33,510 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 316 selfloop transitions, 28 changer transitions 1/476 dead transitions. [2022-09-16 12:00:33,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 476 transitions, 7176 flow [2022-09-16 12:00:33,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 12:00:33,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 12:00:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2022-09-16 12:00:33,511 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7705761316872428 [2022-09-16 12:00:33,511 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2022-09-16 12:00:33,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2022-09-16 12:00:33,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:00:33,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2022-09-16 12:00:33,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:33,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:33,513 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:33,513 INFO L175 Difference]: Start difference. First operand has 328 places, 449 transitions, 6133 flow. Second operand 6 states and 749 transitions. [2022-09-16 12:00:33,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 476 transitions, 7176 flow [2022-09-16 12:00:35,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 476 transitions, 7038 flow, removed 42 selfloop flow, removed 18 redundant places. [2022-09-16 12:00:35,818 INFO L231 Difference]: Finished difference. Result has 316 places, 449 transitions, 6064 flow [2022-09-16 12:00:35,818 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=5995, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6064, PETRI_PLACES=316, PETRI_TRANSITIONS=449} [2022-09-16 12:00:35,819 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 178 predicate places. [2022-09-16 12:00:35,819 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 449 transitions, 6064 flow [2022-09-16 12:00:35,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:35,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:00:35,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:00:35,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-09-16 12:00:36,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:36,021 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:00:36,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:00:36,021 INFO L85 PathProgramCache]: Analyzing trace with hash -539296961, now seen corresponding path program 2 times [2022-09-16 12:00:36,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:00:36,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409885392] [2022-09-16 12:00:36,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:00:36,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:00:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:00:36,465 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 12:00:36,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:00:36,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409885392] [2022-09-16 12:00:36,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409885392] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:00:36,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486945006] [2022-09-16 12:00:36,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:00:36,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:36,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:00:36,467 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:00:36,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-09-16 12:00:36,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:00:36,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:00:36,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 12:00:36,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:00:36,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 12:00:36,667 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 12:00:36,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:00:36,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486945006] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:00:36,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:00:36,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2022-09-16 12:00:36,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470945292] [2022-09-16 12:00:36,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:00:36,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:00:36,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:00:36,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:00:36,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-09-16 12:00:36,668 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 12:00:36,669 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 449 transitions, 6064 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:36,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:00:36,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 12:00:36,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:00:42,620 INFO L130 PetriNetUnfolder]: 8457/27079 cut-off events. [2022-09-16 12:00:42,620 INFO L131 PetriNetUnfolder]: For 360025/395379 co-relation queries the response was YES. [2022-09-16 12:00:43,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143003 conditions, 27079 events. 8457/27079 cut-off events. For 360025/395379 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 331598 event pairs, 2279 based on Foata normal form. 2623/29016 useless extension candidates. Maximal degree in co-relation 142671. Up to 15466 conditions per place. [2022-09-16 12:00:43,176 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 371 selfloop transitions, 44 changer transitions 0/546 dead transitions. [2022-09-16 12:00:43,176 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 546 transitions, 8686 flow [2022-09-16 12:00:43,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 12:00:43,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 12:00:43,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 750 transitions. [2022-09-16 12:00:43,178 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7716049382716049 [2022-09-16 12:00:43,178 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 750 transitions. [2022-09-16 12:00:43,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 750 transitions. [2022-09-16 12:00:43,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:00:43,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 750 transitions. [2022-09-16 12:00:43,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:43,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:43,180 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:43,180 INFO L175 Difference]: Start difference. First operand has 316 places, 449 transitions, 6064 flow. Second operand 6 states and 750 transitions. [2022-09-16 12:00:43,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 546 transitions, 8686 flow [2022-09-16 12:00:45,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 546 transitions, 8614 flow, removed 8 selfloop flow, removed 5 redundant places. [2022-09-16 12:00:45,476 INFO L231 Difference]: Finished difference. Result has 317 places, 469 transitions, 6592 flow [2022-09-16 12:00:45,477 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=5992, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6592, PETRI_PLACES=317, PETRI_TRANSITIONS=469} [2022-09-16 12:00:45,477 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 179 predicate places. [2022-09-16 12:00:45,477 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 469 transitions, 6592 flow [2022-09-16 12:00:45,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:45,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:00:45,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:00:45,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-09-16 12:00:45,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-09-16 12:00:45,678 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:00:45,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:00:45,679 INFO L85 PathProgramCache]: Analyzing trace with hash -870313423, now seen corresponding path program 1 times [2022-09-16 12:00:45,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:00:45,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620463159] [2022-09-16 12:00:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:00:45,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:00:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:00:46,271 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 12:00:46,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:00:46,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620463159] [2022-09-16 12:00:46,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620463159] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:00:46,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087693093] [2022-09-16 12:00:46,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:00:46,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:00:46,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:00:46,276 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:00:46,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-09-16 12:00:46,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:00:46,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 34 conjunts are in the unsatisfiable core [2022-09-16 12:00:46,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:00:46,731 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 12:00:47,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:00:47,217 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 12:00:47,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:00:47,368 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 12:00:47,545 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 12:00:47,546 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 25 treesize of output 12 [2022-09-16 12:00:47,577 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 12:00:47,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:00:47,676 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_567 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_567) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) is different from false [2022-09-16 12:00:48,199 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:00:48,199 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 12:00:48,207 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:00:48,208 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 88 treesize of output 84 [2022-09-16 12:00:48,212 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 36 treesize of output 30 [2022-09-16 12:00:48,217 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 62 treesize of output 50 [2022-09-16 12:00:49,094 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 12:00:49,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087693093] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:00:49,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:00:49,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 62 [2022-09-16 12:00:49,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997307263] [2022-09-16 12:00:49,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:00:49,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-09-16 12:00:49,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:00:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-09-16 12:00:49,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=3552, Unknown=10, NotChecked=120, Total=3906 [2022-09-16 12:00:49,098 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-09-16 12:00:49,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 469 transitions, 6592 flow. Second operand has 63 states, 63 states have (on average 81.0952380952381) internal successors, (5109), 63 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:49,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:00:49,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-09-16 12:00:49,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:00:57,252 INFO L130 PetriNetUnfolder]: 8480/27133 cut-off events. [2022-09-16 12:00:57,252 INFO L131 PetriNetUnfolder]: For 360967/399515 co-relation queries the response was YES. [2022-09-16 12:00:57,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145543 conditions, 27133 events. 8480/27133 cut-off events. For 360967/399515 co-relation queries the response was YES. Maximal size of possible extension queue 806. Compared 332688 event pairs, 1056 based on Foata normal form. 4535/31073 useless extension candidates. Maximal degree in co-relation 145203. Up to 7546 conditions per place. [2022-09-16 12:00:57,827 INFO L137 encePairwiseOnDemand]: 129/162 looper letters, 208 selfloop transitions, 197 changer transitions 25/504 dead transitions. [2022-09-16 12:00:57,828 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 504 transitions, 7795 flow [2022-09-16 12:00:57,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 12:00:57,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-09-16 12:00:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2493 transitions. [2022-09-16 12:00:57,830 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.512962962962963 [2022-09-16 12:00:57,830 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2493 transitions. [2022-09-16 12:00:57,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2493 transitions. [2022-09-16 12:00:57,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:00:57,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2493 transitions. [2022-09-16 12:00:57,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 83.1) internal successors, (2493), 30 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:57,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 162.0) internal successors, (5022), 31 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:57,836 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 162.0) internal successors, (5022), 31 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:00:57,836 INFO L175 Difference]: Start difference. First operand has 317 places, 469 transitions, 6592 flow. Second operand 30 states and 2493 transitions. [2022-09-16 12:00:57,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 504 transitions, 7795 flow [2022-09-16 12:01:00,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 504 transitions, 7694 flow, removed 20 selfloop flow, removed 4 redundant places. [2022-09-16 12:01:00,255 INFO L231 Difference]: Finished difference. Result has 344 places, 459 transitions, 6759 flow [2022-09-16 12:01:00,255 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=6491, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=197, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6759, PETRI_PLACES=344, PETRI_TRANSITIONS=459} [2022-09-16 12:01:00,256 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 206 predicate places. [2022-09-16 12:01:00,256 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 459 transitions, 6759 flow [2022-09-16 12:01:00,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 81.0952380952381) internal successors, (5109), 63 states have internal predecessors, (5109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:00,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:00,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:00,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:00,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-09-16 12:01:00,470 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:01:00,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:00,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1590328753, now seen corresponding path program 2 times [2022-09-16 12:01:00,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:00,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124173402] [2022-09-16 12:01:00,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:00,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:00,768 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 12:01:00,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:00,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124173402] [2022-09-16 12:01:00,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124173402] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:00,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499670088] [2022-09-16 12:01:00,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:01:00,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:00,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:00,770 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:00,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-09-16 12:01:00,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:01:00,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:01:00,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 12:01:00,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:01,079 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 12:01:01,079 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 23 treesize of output 10 [2022-09-16 12:01:01,098 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 12:01:01,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:01:01,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499670088] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:01,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:01:01,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 12:01:01,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574828600] [2022-09-16 12:01:01,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:01,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:01:01,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:01,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:01:01,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 12:01:01,100 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 12:01:01,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 459 transitions, 6759 flow. Second operand has 6 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:01,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:01,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 12:01:01,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:07,182 INFO L130 PetriNetUnfolder]: 8482/27127 cut-off events. [2022-09-16 12:01:07,183 INFO L131 PetriNetUnfolder]: For 396030/436358 co-relation queries the response was YES. [2022-09-16 12:01:07,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151927 conditions, 27127 events. 8482/27127 cut-off events. For 396030/436358 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 332707 event pairs, 2265 based on Foata normal form. 1208/27579 useless extension candidates. Maximal degree in co-relation 151578. Up to 17008 conditions per place. [2022-09-16 12:01:07,566 INFO L137 encePairwiseOnDemand]: 153/162 looper letters, 317 selfloop transitions, 38 changer transitions 1/487 dead transitions. [2022-09-16 12:01:07,566 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 487 transitions, 7896 flow [2022-09-16 12:01:07,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 12:01:07,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 12:01:07,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 751 transitions. [2022-09-16 12:01:07,568 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.772633744855967 [2022-09-16 12:01:07,568 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 751 transitions. [2022-09-16 12:01:07,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 751 transitions. [2022-09-16 12:01:07,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:07,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 751 transitions. [2022-09-16 12:01:07,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:07,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:07,569 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:07,570 INFO L175 Difference]: Start difference. First operand has 344 places, 459 transitions, 6759 flow. Second operand 6 states and 751 transitions. [2022-09-16 12:01:07,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 487 transitions, 7896 flow [2022-09-16 12:01:10,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 487 transitions, 7658 flow, removed 19 selfloop flow, removed 28 redundant places. [2022-09-16 12:01:10,225 INFO L231 Difference]: Finished difference. Result has 314 places, 471 transitions, 6872 flow [2022-09-16 12:01:10,226 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=6529, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6872, PETRI_PLACES=314, PETRI_TRANSITIONS=471} [2022-09-16 12:01:10,226 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 176 predicate places. [2022-09-16 12:01:10,226 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 471 transitions, 6872 flow [2022-09-16 12:01:10,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:10,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:10,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:10,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:10,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-09-16 12:01:10,429 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:01:10,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:10,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1006789463, now seen corresponding path program 3 times [2022-09-16 12:01:10,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:10,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60537512] [2022-09-16 12:01:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:10,696 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 12:01:10,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:10,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60537512] [2022-09-16 12:01:10,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60537512] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:10,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997918566] [2022-09-16 12:01:10,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 12:01:10,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:10,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:10,698 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:10,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-09-16 12:01:10,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 12:01:10,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:01:10,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 12:01:10,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:10,976 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 12:01:10,976 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 23 treesize of output 10 [2022-09-16 12:01:10,993 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 12:01:10,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:01:10,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997918566] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:10,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:01:10,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 12:01:10,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065742363] [2022-09-16 12:01:10,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:10,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:01:10,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:10,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:01:10,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 12:01:10,994 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 12:01:10,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 471 transitions, 6872 flow. Second operand has 6 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:10,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:10,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 12:01:10,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:17,400 INFO L130 PetriNetUnfolder]: 8535/27426 cut-off events. [2022-09-16 12:01:17,400 INFO L131 PetriNetUnfolder]: For 403703/448290 co-relation queries the response was YES. [2022-09-16 12:01:17,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149604 conditions, 27426 events. 8535/27426 cut-off events. For 403703/448290 co-relation queries the response was YES. Maximal size of possible extension queue 831. Compared 336181 event pairs, 2334 based on Foata normal form. 1288/27955 useless extension candidates. Maximal degree in co-relation 149263. Up to 16591 conditions per place. [2022-09-16 12:01:17,966 INFO L137 encePairwiseOnDemand]: 153/162 looper letters, 336 selfloop transitions, 34 changer transitions 1/502 dead transitions. [2022-09-16 12:01:17,966 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 502 transitions, 8056 flow [2022-09-16 12:01:17,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 12:01:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 12:01:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 752 transitions. [2022-09-16 12:01:17,967 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7736625514403292 [2022-09-16 12:01:17,967 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 752 transitions. [2022-09-16 12:01:17,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 752 transitions. [2022-09-16 12:01:17,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:17,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 752 transitions. [2022-09-16 12:01:17,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.33333333333333) internal successors, (752), 6 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:17,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:17,969 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:17,969 INFO L175 Difference]: Start difference. First operand has 314 places, 471 transitions, 6872 flow. Second operand 6 states and 752 transitions. [2022-09-16 12:01:17,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 502 transitions, 8056 flow [2022-09-16 12:01:20,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 502 transitions, 8022 flow, removed 10 selfloop flow, removed 1 redundant places. [2022-09-16 12:01:20,727 INFO L231 Difference]: Finished difference. Result has 320 places, 474 transitions, 6976 flow [2022-09-16 12:01:20,727 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=6842, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6976, PETRI_PLACES=320, PETRI_TRANSITIONS=474} [2022-09-16 12:01:20,728 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 182 predicate places. [2022-09-16 12:01:20,728 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 474 transitions, 6976 flow [2022-09-16 12:01:20,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:20,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:20,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:20,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:20,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:20,929 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:01:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:20,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1660269512, now seen corresponding path program 1 times [2022-09-16 12:01:20,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:20,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059686354] [2022-09-16 12:01:20,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:20,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:20,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:20,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059686354] [2022-09-16 12:01:20,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059686354] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:20,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984770308] [2022-09-16 12:01:20,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:20,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:20,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:20,976 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:20,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-09-16 12:01:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:21,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 14 conjunts are in the unsatisfiable core [2022-09-16 12:01:21,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:21,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:21,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:21,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984770308] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:21,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:21,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 22 [2022-09-16 12:01:21,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330422265] [2022-09-16 12:01:21,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:21,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-09-16 12:01:21,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:21,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-09-16 12:01:21,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2022-09-16 12:01:21,606 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 162 [2022-09-16 12:01:21,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 474 transitions, 6976 flow. Second operand has 22 states, 22 states have (on average 120.04545454545455) internal successors, (2641), 22 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:21,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:21,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 162 [2022-09-16 12:01:21,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:26,484 INFO L130 PetriNetUnfolder]: 5278/22674 cut-off events. [2022-09-16 12:01:26,485 INFO L131 PetriNetUnfolder]: For 358594/374831 co-relation queries the response was YES. [2022-09-16 12:01:26,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118464 conditions, 22674 events. 5278/22674 cut-off events. For 358594/374831 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 291070 event pairs, 15 based on Foata normal form. 2422/24404 useless extension candidates. Maximal degree in co-relation 118167. Up to 5266 conditions per place. [2022-09-16 12:01:26,835 INFO L137 encePairwiseOnDemand]: 146/162 looper letters, 117 selfloop transitions, 136 changer transitions 74/526 dead transitions. [2022-09-16 12:01:26,835 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 526 transitions, 8454 flow [2022-09-16 12:01:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-16 12:01:26,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-09-16 12:01:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2285 transitions. [2022-09-16 12:01:26,839 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7423651721897336 [2022-09-16 12:01:26,839 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2285 transitions. [2022-09-16 12:01:26,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2285 transitions. [2022-09-16 12:01:26,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:26,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2285 transitions. [2022-09-16 12:01:26,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 120.26315789473684) internal successors, (2285), 19 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:26,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:26,843 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 162.0) internal successors, (3240), 20 states have internal predecessors, (3240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:26,843 INFO L175 Difference]: Start difference. First operand has 320 places, 474 transitions, 6976 flow. Second operand 19 states and 2285 transitions. [2022-09-16 12:01:26,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 526 transitions, 8454 flow [2022-09-16 12:01:28,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 526 transitions, 8393 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-09-16 12:01:28,758 INFO L231 Difference]: Finished difference. Result has 338 places, 433 transitions, 6648 flow [2022-09-16 12:01:28,758 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=6582, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=6648, PETRI_PLACES=338, PETRI_TRANSITIONS=433} [2022-09-16 12:01:28,758 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 200 predicate places. [2022-09-16 12:01:28,758 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 433 transitions, 6648 flow [2022-09-16 12:01:28,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 120.04545454545455) internal successors, (2641), 22 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:28,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:28,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:28,776 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:28,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-09-16 12:01:28,963 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:01:28,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:28,963 INFO L85 PathProgramCache]: Analyzing trace with hash 885360938, now seen corresponding path program 1 times [2022-09-16 12:01:28,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:28,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334516571] [2022-09-16 12:01:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:28,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:29,224 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 12:01:29,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:29,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334516571] [2022-09-16 12:01:29,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334516571] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:29,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631074364] [2022-09-16 12:01:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:29,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:29,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:29,226 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:29,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-09-16 12:01:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:29,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 34 conjunts are in the unsatisfiable core [2022-09-16 12:01:29,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:29,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 12:01:30,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:01:30,041 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 12:01:30,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:01:30,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 12:01:30,281 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 12:01:30,281 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 25 treesize of output 12 [2022-09-16 12:01:30,311 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 12:01:30,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:30,854 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:30,855 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 12:01:30,861 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:30,861 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 88 treesize of output 84 [2022-09-16 12:01:30,865 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 68 treesize of output 56 [2022-09-16 12:01:30,868 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 30 treesize of output 24 [2022-09-16 12:01:31,655 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 12:01:31,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631074364] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:31,655 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:31,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-09-16 12:01:31,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823094650] [2022-09-16 12:01:31,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:31,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-09-16 12:01:31,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:31,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-09-16 12:01:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3177, Unknown=9, NotChecked=0, Total=3422 [2022-09-16 12:01:31,659 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2022-09-16 12:01:31,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 433 transitions, 6648 flow. Second operand has 59 states, 59 states have (on average 84.23728813559322) internal successors, (4970), 59 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:31,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:31,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2022-09-16 12:01:31,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:40,054 INFO L130 PetriNetUnfolder]: 9070/28937 cut-off events. [2022-09-16 12:01:40,054 INFO L131 PetriNetUnfolder]: For 543573/608662 co-relation queries the response was YES. [2022-09-16 12:01:40,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166567 conditions, 28937 events. 9070/28937 cut-off events. For 543573/608662 co-relation queries the response was YES. Maximal size of possible extension queue 846. Compared 356427 event pairs, 1037 based on Foata normal form. 5840/33773 useless extension candidates. Maximal degree in co-relation 166485. Up to 8563 conditions per place. [2022-09-16 12:01:40,689 INFO L137 encePairwiseOnDemand]: 127/162 looper letters, 239 selfloop transitions, 178 changer transitions 26/517 dead transitions. [2022-09-16 12:01:40,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 517 transitions, 8711 flow [2022-09-16 12:01:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-16 12:01:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-09-16 12:01:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2745 transitions. [2022-09-16 12:01:40,692 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5295138888888888 [2022-09-16 12:01:40,692 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2745 transitions. [2022-09-16 12:01:40,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2745 transitions. [2022-09-16 12:01:40,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:40,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2745 transitions. [2022-09-16 12:01:40,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 85.78125) internal successors, (2745), 32 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:40,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 162.0) internal successors, (5346), 33 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:40,698 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 162.0) internal successors, (5346), 33 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:40,698 INFO L175 Difference]: Start difference. First operand has 338 places, 433 transitions, 6648 flow. Second operand 32 states and 2745 transitions. [2022-09-16 12:01:40,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 517 transitions, 8711 flow [2022-09-16 12:01:44,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 517 transitions, 8123 flow, removed 187 selfloop flow, removed 26 redundant places. [2022-09-16 12:01:44,296 INFO L231 Difference]: Finished difference. Result has 328 places, 456 transitions, 7170 flow [2022-09-16 12:01:44,297 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=6123, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7170, PETRI_PLACES=328, PETRI_TRANSITIONS=456} [2022-09-16 12:01:44,297 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 190 predicate places. [2022-09-16 12:01:44,298 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 456 transitions, 7170 flow [2022-09-16 12:01:44,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 84.23728813559322) internal successors, (4970), 59 states have internal predecessors, (4970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:44,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:44,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:44,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:44,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-09-16 12:01:44,523 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:01:44,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:44,523 INFO L85 PathProgramCache]: Analyzing trace with hash -111907560, now seen corresponding path program 2 times [2022-09-16 12:01:44,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:44,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530422593] [2022-09-16 12:01:44,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:44,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:44,796 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 12:01:44,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:44,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530422593] [2022-09-16 12:01:44,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530422593] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:44,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754330273] [2022-09-16 12:01:44,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:01:44,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:44,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:44,799 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:44,800 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-09-16 12:01:44,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:01:44,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:01:44,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 12:01:44,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:45,071 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 12:01:45,072 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 23 treesize of output 10 [2022-09-16 12:01:45,087 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 12:01:45,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:01:45,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754330273] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:45,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:01:45,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 12:01:45,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56317129] [2022-09-16 12:01:45,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:45,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:01:45,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:45,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:01:45,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 12:01:45,089 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 12:01:45,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 456 transitions, 7170 flow. Second operand has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:45,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:45,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 12:01:45,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:52,132 INFO L130 PetriNetUnfolder]: 9089/29306 cut-off events. [2022-09-16 12:01:52,132 INFO L131 PetriNetUnfolder]: For 538421/606664 co-relation queries the response was YES. [2022-09-16 12:01:52,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166543 conditions, 29306 events. 9089/29306 cut-off events. For 538421/606664 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 363569 event pairs, 2439 based on Foata normal form. 2390/30544 useless extension candidates. Maximal degree in co-relation 166470. Up to 18268 conditions per place. [2022-09-16 12:01:52,861 INFO L137 encePairwiseOnDemand]: 152/162 looper letters, 323 selfloop transitions, 11 changer transitions 10/472 dead transitions. [2022-09-16 12:01:52,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 472 transitions, 8055 flow [2022-09-16 12:01:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 12:01:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 12:01:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2022-09-16 12:01:52,862 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7705761316872428 [2022-09-16 12:01:52,863 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2022-09-16 12:01:52,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2022-09-16 12:01:52,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:52,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2022-09-16 12:01:52,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:52,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:52,866 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:52,866 INFO L175 Difference]: Start difference. First operand has 328 places, 456 transitions, 7170 flow. Second operand 6 states and 749 transitions. [2022-09-16 12:01:52,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 472 transitions, 8055 flow [2022-09-16 12:01:55,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 472 transitions, 7960 flow, removed 23 selfloop flow, removed 28 redundant places. [2022-09-16 12:01:55,246 INFO L231 Difference]: Finished difference. Result has 304 places, 459 transitions, 7165 flow [2022-09-16 12:01:55,246 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=7085, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7165, PETRI_PLACES=304, PETRI_TRANSITIONS=459} [2022-09-16 12:01:55,247 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 166 predicate places. [2022-09-16 12:01:55,247 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 459 transitions, 7165 flow [2022-09-16 12:01:55,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:55,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:55,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:55,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:55,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:55,453 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:01:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:55,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1894690230, now seen corresponding path program 3 times [2022-09-16 12:01:55,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:55,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021817953] [2022-09-16 12:01:55,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:55,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:55,756 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 12:01:55,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:55,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021817953] [2022-09-16 12:01:55,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021817953] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:55,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102063474] [2022-09-16 12:01:55,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 12:01:55,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:55,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:55,760 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:55,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-09-16 12:01:55,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 12:01:55,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:01:55,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 12:01:55,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:56,058 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 12:01:56,058 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 23 treesize of output 10 [2022-09-16 12:01:56,075 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 12:01:56,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:01:56,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102063474] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:56,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:01:56,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 12:01:56,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141534351] [2022-09-16 12:01:56,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:56,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:01:56,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:56,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:01:56,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 12:01:56,077 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-09-16 12:01:56,078 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 459 transitions, 7165 flow. Second operand has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:56,078 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:56,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-09-16 12:01:56,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:02,575 INFO L130 PetriNetUnfolder]: 9166/29078 cut-off events. [2022-09-16 12:02:02,575 INFO L131 PetriNetUnfolder]: For 544984/613746 co-relation queries the response was YES. [2022-09-16 12:02:02,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165515 conditions, 29078 events. 9166/29078 cut-off events. For 544984/613746 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 357020 event pairs, 2436 based on Foata normal form. 2639/30570 useless extension candidates. Maximal degree in co-relation 165442. Up to 18335 conditions per place. [2022-09-16 12:02:02,997 INFO L137 encePairwiseOnDemand]: 152/162 looper letters, 324 selfloop transitions, 13 changer transitions 8/473 dead transitions. [2022-09-16 12:02:02,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 473 transitions, 8020 flow [2022-09-16 12:02:02,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 12:02:02,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 12:02:02,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2022-09-16 12:02:02,998 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7705761316872428 [2022-09-16 12:02:02,998 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2022-09-16 12:02:02,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2022-09-16 12:02:02,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:02,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2022-09-16 12:02:02,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:03,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:03,000 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:03,000 INFO L175 Difference]: Start difference. First operand has 304 places, 459 transitions, 7165 flow. Second operand 6 states and 749 transitions. [2022-09-16 12:02:03,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 473 transitions, 8020 flow [2022-09-16 12:02:05,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 473 transitions, 7989 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-09-16 12:02:05,177 INFO L231 Difference]: Finished difference. Result has 308 places, 462 transitions, 7205 flow [2022-09-16 12:02:05,178 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=7138, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=447, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=7205, PETRI_PLACES=308, PETRI_TRANSITIONS=462} [2022-09-16 12:02:05,178 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 170 predicate places. [2022-09-16 12:02:05,178 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 462 transitions, 7205 flow [2022-09-16 12:02:05,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:05,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:05,178 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:02:05,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-09-16 12:02:05,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:05,381 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:02:05,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:05,382 INFO L85 PathProgramCache]: Analyzing trace with hash 422552089, now seen corresponding path program 4 times [2022-09-16 12:02:05,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:05,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536315521] [2022-09-16 12:02:05,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:06,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:06,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536315521] [2022-09-16 12:02:06,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536315521] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:06,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318831048] [2022-09-16 12:02:06,599 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 12:02:06,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:06,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:06,600 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:02:06,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-09-16 12:02:06,681 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 12:02:06,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:02:06,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 12:02:06,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:07,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:02:07,399 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 12:02:07,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 12:02:07,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:07,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:02:07,729 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:02:07,730 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 42 treesize of output 38 [2022-09-16 12:02:07,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-09-16 12:02:09,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:09,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318831048] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:02:09,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:02:09,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 20] total 64 [2022-09-16 12:02:09,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499275353] [2022-09-16 12:02:09,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:02:09,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-09-16 12:02:09,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:09,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-09-16 12:02:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=3877, Unknown=1, NotChecked=0, Total=4160 [2022-09-16 12:02:09,021 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 162 [2022-09-16 12:02:09,024 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 462 transitions, 7205 flow. Second operand has 65 states, 65 states have (on average 79.43076923076923) internal successors, (5163), 65 states have internal predecessors, (5163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:09,024 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:09,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 162 [2022-09-16 12:02:09,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:21,459 INFO L130 PetriNetUnfolder]: 9313/28542 cut-off events. [2022-09-16 12:02:21,459 INFO L131 PetriNetUnfolder]: For 549432/625476 co-relation queries the response was YES. [2022-09-16 12:02:21,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168472 conditions, 28542 events. 9313/28542 cut-off events. For 549432/625476 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 342472 event pairs, 1649 based on Foata normal form. 7327/34689 useless extension candidates. Maximal degree in co-relation 168397. Up to 6528 conditions per place. [2022-09-16 12:02:22,056 INFO L137 encePairwiseOnDemand]: 131/162 looper letters, 304 selfloop transitions, 245 changer transitions 26/644 dead transitions. [2022-09-16 12:02:22,056 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 644 transitions, 10433 flow [2022-09-16 12:02:22,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-09-16 12:02:22,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-09-16 12:02:22,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 4390 transitions. [2022-09-16 12:02:22,059 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5018289894833105 [2022-09-16 12:02:22,060 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 4390 transitions. [2022-09-16 12:02:22,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 4390 transitions. [2022-09-16 12:02:22,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:22,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 4390 transitions. [2022-09-16 12:02:22,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 81.29629629629629) internal successors, (4390), 54 states have internal predecessors, (4390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:22,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 162.0) internal successors, (8910), 55 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:22,070 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 162.0) internal successors, (8910), 55 states have internal predecessors, (8910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:22,070 INFO L175 Difference]: Start difference. First operand has 308 places, 462 transitions, 7205 flow. Second operand 54 states and 4390 transitions. [2022-09-16 12:02:22,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 644 transitions, 10433 flow [2022-09-16 12:02:24,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 644 transitions, 10383 flow, removed 21 selfloop flow, removed 2 redundant places. [2022-09-16 12:02:24,087 INFO L231 Difference]: Finished difference. Result has 363 places, 492 transitions, 8358 flow [2022-09-16 12:02:24,087 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=7178, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=8358, PETRI_PLACES=363, PETRI_TRANSITIONS=492} [2022-09-16 12:02:24,088 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 225 predicate places. [2022-09-16 12:02:24,088 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 492 transitions, 8358 flow [2022-09-16 12:02:24,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 79.43076923076923) internal successors, (5163), 65 states have internal predecessors, (5163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:24,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:24,089 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:02:24,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-09-16 12:02:24,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:24,303 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:02:24,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:24,304 INFO L85 PathProgramCache]: Analyzing trace with hash -918452193, now seen corresponding path program 4 times [2022-09-16 12:02:24,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:24,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437218044] [2022-09-16 12:02:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:24,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:24,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:25,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:25,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437218044] [2022-09-16 12:02:25,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437218044] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:25,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205850993] [2022-09-16 12:02:25,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 12:02:25,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:25,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:25,621 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:02:25,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-09-16 12:02:25,715 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 12:02:25,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:02:25,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-16 12:02:25,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:26,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:02:26,142 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 12:02:26,211 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 12:02:26,245 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 12:02:26,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:02:26,348 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_773 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_773) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 2147483649))) is different from false [2022-09-16 12:02:26,355 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:02:26,356 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 46 treesize of output 42 [2022-09-16 12:02:26,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-09-16 12:02:26,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 12:02:26,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205850993] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:26,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-16 12:02:26,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [26, 14] total 50 [2022-09-16 12:02:26,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863073057] [2022-09-16 12:02:26,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:26,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 12:02:26,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:26,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 12:02:26,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2306, Unknown=1, NotChecked=96, Total=2550 [2022-09-16 12:02:26,750 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 162 [2022-09-16 12:02:26,751 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 492 transitions, 8358 flow. Second operand has 13 states, 13 states have (on average 104.46153846153847) internal successors, (1358), 13 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:26,751 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:26,751 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 162 [2022-09-16 12:02:26,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:37,493 INFO L130 PetriNetUnfolder]: 13589/41400 cut-off events. [2022-09-16 12:02:37,493 INFO L131 PetriNetUnfolder]: For 956194/1068485 co-relation queries the response was YES. [2022-09-16 12:02:38,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255505 conditions, 41400 events. 13589/41400 cut-off events. For 956194/1068485 co-relation queries the response was YES. Maximal size of possible extension queue 1214. Compared 524872 event pairs, 2227 based on Foata normal form. 14193/54121 useless extension candidates. Maximal degree in co-relation 255425. Up to 9314 conditions per place. [2022-09-16 12:02:38,177 INFO L137 encePairwiseOnDemand]: 141/162 looper letters, 479 selfloop transitions, 169 changer transitions 44/804 dead transitions. [2022-09-16 12:02:38,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 804 transitions, 16261 flow [2022-09-16 12:02:38,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:02:38,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:02:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1951 transitions. [2022-09-16 12:02:38,180 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6690672153635117 [2022-09-16 12:02:38,180 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1951 transitions. [2022-09-16 12:02:38,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1951 transitions. [2022-09-16 12:02:38,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:38,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1951 transitions. [2022-09-16 12:02:38,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 108.38888888888889) internal successors, (1951), 18 states have internal predecessors, (1951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:38,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 162.0) internal successors, (3078), 19 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:38,184 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 162.0) internal successors, (3078), 19 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:38,184 INFO L175 Difference]: Start difference. First operand has 363 places, 492 transitions, 8358 flow. Second operand 18 states and 1951 transitions. [2022-09-16 12:02:38,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 804 transitions, 16261 flow [2022-09-16 12:02:42,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 804 transitions, 16049 flow, removed 46 selfloop flow, removed 35 redundant places. [2022-09-16 12:02:42,158 INFO L231 Difference]: Finished difference. Result has 350 places, 520 transitions, 9809 flow [2022-09-16 12:02:42,159 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=8169, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9809, PETRI_PLACES=350, PETRI_TRANSITIONS=520} [2022-09-16 12:02:42,159 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 212 predicate places. [2022-09-16 12:02:42,159 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 520 transitions, 9809 flow [2022-09-16 12:02:42,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.46153846153847) internal successors, (1358), 13 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:42,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:42,160 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:02:42,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-09-16 12:02:42,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:42,377 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:02:42,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:42,377 INFO L85 PathProgramCache]: Analyzing trace with hash 214213449, now seen corresponding path program 4 times [2022-09-16 12:02:42,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:42,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347644332] [2022-09-16 12:02:42,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:42,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:42,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:43,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:43,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347644332] [2022-09-16 12:02:43,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347644332] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:43,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343466438] [2022-09-16 12:02:43,312 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 12:02:43,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:43,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:43,313 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:02:43,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-09-16 12:02:43,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 12:02:43,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:02:43,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 47 conjunts are in the unsatisfiable core [2022-09-16 12:02:43,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:43,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 12:02:44,052 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-09-16 12:02:44,052 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 30 [2022-09-16 12:02:44,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:02:44,709 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 29 treesize of output 29 [2022-09-16 12:02:44,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:02:44,912 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 29 treesize of output 29 [2022-09-16 12:02:45,100 INFO L356 Elim1Store]: treesize reduction 10, result has 69.7 percent of original size [2022-09-16 12:02:45,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2022-09-16 12:02:45,158 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:45,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:02:46,864 INFO L356 Elim1Store]: treesize reduction 20, result has 63.0 percent of original size [2022-09-16 12:02:46,864 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 53 [2022-09-16 12:02:46,888 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:02:46,888 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 196 treesize of output 200 [2022-09-16 12:02:46,895 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 73 treesize of output 61 [2022-09-16 12:02:46,900 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 134 treesize of output 110 [2022-09-16 12:02:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:48,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343466438] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:02:48,114 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:02:48,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26, 26] total 74 [2022-09-16 12:02:48,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629375142] [2022-09-16 12:02:48,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:02:48,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-09-16 12:02:48,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:48,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-09-16 12:02:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=5230, Unknown=28, NotChecked=0, Total=5550 [2022-09-16 12:02:48,119 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-09-16 12:02:48,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 520 transitions, 9809 flow. Second operand has 75 states, 75 states have (on average 81.06666666666666) internal successors, (6080), 75 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:48,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:48,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-09-16 12:02:48,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:01,910 INFO L130 PetriNetUnfolder]: 13724/40617 cut-off events. [2022-09-16 12:03:01,910 INFO L131 PetriNetUnfolder]: For 1007122/1112163 co-relation queries the response was YES. [2022-09-16 12:03:02,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271266 conditions, 40617 events. 13724/40617 cut-off events. For 1007122/1112163 co-relation queries the response was YES. Maximal size of possible extension queue 1209. Compared 509907 event pairs, 2075 based on Foata normal form. 8826/47993 useless extension candidates. Maximal degree in co-relation 271186. Up to 20273 conditions per place. [2022-09-16 12:03:03,117 INFO L137 encePairwiseOnDemand]: 128/162 looper letters, 288 selfloop transitions, 215 changer transitions 20/593 dead transitions. [2022-09-16 12:03:03,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 593 transitions, 11647 flow [2022-09-16 12:03:03,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-09-16 12:03:03,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-09-16 12:03:03,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 3932 transitions. [2022-09-16 12:03:03,122 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5056584362139918 [2022-09-16 12:03:03,122 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 3932 transitions. [2022-09-16 12:03:03,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 3932 transitions. [2022-09-16 12:03:03,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:03,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 3932 transitions. [2022-09-16 12:03:03,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 81.91666666666667) internal successors, (3932), 48 states have internal predecessors, (3932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:03,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 162.0) internal successors, (7938), 49 states have internal predecessors, (7938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:03,135 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 162.0) internal successors, (7938), 49 states have internal predecessors, (7938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:03,135 INFO L175 Difference]: Start difference. First operand has 350 places, 520 transitions, 9809 flow. Second operand 48 states and 3932 transitions. [2022-09-16 12:03:03,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 593 transitions, 11647 flow [2022-09-16 12:03:07,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 593 transitions, 11349 flow, removed 77 selfloop flow, removed 26 redundant places. [2022-09-16 12:03:07,985 INFO L231 Difference]: Finished difference. Result has 360 places, 550 transitions, 10553 flow [2022-09-16 12:03:07,986 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=9616, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=10553, PETRI_PLACES=360, PETRI_TRANSITIONS=550} [2022-09-16 12:03:07,986 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 222 predicate places. [2022-09-16 12:03:07,986 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 550 transitions, 10553 flow [2022-09-16 12:03:07,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 81.06666666666666) internal successors, (6080), 75 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:07,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:07,988 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:03:08,006 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-09-16 12:03:08,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-09-16 12:03:08,196 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:03:08,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:08,196 INFO L85 PathProgramCache]: Analyzing trace with hash 686275698, now seen corresponding path program 1 times [2022-09-16 12:03:08,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:08,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029404958] [2022-09-16 12:03:08,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:08,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:08,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 12:03:08,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:08,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029404958] [2022-09-16 12:03:08,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029404958] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:08,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543500172] [2022-09-16 12:03:08,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:08,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:08,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:08,225 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:08,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-09-16 12:03:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:08,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:03:08,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:08,335 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 12:03:08,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:03:08,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543500172] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:03:08,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:03:08,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:03:08,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398690432] [2022-09-16 12:03:08,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:03:08,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:03:08,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:08,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:03:08,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:03:08,337 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 162 [2022-09-16 12:03:08,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 550 transitions, 10553 flow. Second operand has 6 states, 6 states have (on average 132.33333333333334) internal successors, (794), 6 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:08,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:08,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 162 [2022-09-16 12:03:08,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:18,326 INFO L130 PetriNetUnfolder]: 10489/36218 cut-off events. [2022-09-16 12:03:18,326 INFO L131 PetriNetUnfolder]: For 898938/925987 co-relation queries the response was YES. [2022-09-16 12:03:18,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255217 conditions, 36218 events. 10489/36218 cut-off events. For 898938/925987 co-relation queries the response was YES. Maximal size of possible extension queue 1002. Compared 468828 event pairs, 429 based on Foata normal form. 3063/37335 useless extension candidates. Maximal degree in co-relation 255135. Up to 10360 conditions per place. [2022-09-16 12:03:19,172 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 264 selfloop transitions, 8 changer transitions 0/599 dead transitions. [2022-09-16 12:03:19,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 599 transitions, 12245 flow [2022-09-16 12:03:19,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:03:19,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:03:19,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 945 transitions. [2022-09-16 12:03:19,174 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-09-16 12:03:19,174 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 945 transitions. [2022-09-16 12:03:19,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 945 transitions. [2022-09-16 12:03:19,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:19,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 945 transitions. [2022-09-16 12:03:19,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:19,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:19,176 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:19,176 INFO L175 Difference]: Start difference. First operand has 360 places, 550 transitions, 10553 flow. Second operand 7 states and 945 transitions. [2022-09-16 12:03:19,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 599 transitions, 12245 flow [2022-09-16 12:03:24,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 599 transitions, 11758 flow, removed 52 selfloop flow, removed 30 redundant places. [2022-09-16 12:03:24,693 INFO L231 Difference]: Finished difference. Result has 334 places, 548 transitions, 10068 flow [2022-09-16 12:03:24,694 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=10052, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=548, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=10068, PETRI_PLACES=334, PETRI_TRANSITIONS=548} [2022-09-16 12:03:24,694 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 196 predicate places. [2022-09-16 12:03:24,694 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 548 transitions, 10068 flow [2022-09-16 12:03:24,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.33333333333334) internal successors, (794), 6 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:24,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:24,694 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:03:24,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-09-16 12:03:24,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:24,899 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:03:24,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:24,900 INFO L85 PathProgramCache]: Analyzing trace with hash -757032543, now seen corresponding path program 3 times [2022-09-16 12:03:24,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:24,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494142930] [2022-09-16 12:03:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:24,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:25,841 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:25,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:25,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494142930] [2022-09-16 12:03:25,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494142930] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:25,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238718043] [2022-09-16 12:03:25,842 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 12:03:25,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:25,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:25,843 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:25,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-09-16 12:03:25,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 12:03:25,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:03:25,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 26 conjunts are in the unsatisfiable core [2022-09-16 12:03:25,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:25,957 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:03:26,047 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:03:26,047 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:03:26,272 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 12:03:26,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 12:03:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 12:03:26,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:03:26,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238718043] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:03:26,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:03:26,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [25] total 36 [2022-09-16 12:03:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155853337] [2022-09-16 12:03:26,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:03:26,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 12:03:26,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:26,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 12:03:26,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1235, Unknown=0, NotChecked=0, Total=1332 [2022-09-16 12:03:26,379 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 162 [2022-09-16 12:03:26,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 548 transitions, 10068 flow. Second operand has 13 states, 13 states have (on average 101.61538461538461) internal successors, (1321), 13 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:26,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:26,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 162 [2022-09-16 12:03:26,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:37,663 INFO L130 PetriNetUnfolder]: 14555/42566 cut-off events. [2022-09-16 12:03:37,663 INFO L131 PetriNetUnfolder]: For 1028957/1134603 co-relation queries the response was YES. [2022-09-16 12:03:38,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282156 conditions, 42566 events. 14555/42566 cut-off events. For 1028957/1134603 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 536423 event pairs, 3464 based on Foata normal form. 7481/48381 useless extension candidates. Maximal degree in co-relation 282079. Up to 20873 conditions per place. [2022-09-16 12:03:38,392 INFO L137 encePairwiseOnDemand]: 147/162 looper letters, 436 selfloop transitions, 120 changer transitions 0/672 dead transitions. [2022-09-16 12:03:38,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 672 transitions, 14130 flow [2022-09-16 12:03:38,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 12:03:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-09-16 12:03:38,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1462 transitions. [2022-09-16 12:03:38,393 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.644620811287478 [2022-09-16 12:03:38,393 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1462 transitions. [2022-09-16 12:03:38,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1462 transitions. [2022-09-16 12:03:38,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:38,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1462 transitions. [2022-09-16 12:03:38,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 104.42857142857143) internal successors, (1462), 14 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:38,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:38,396 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:38,396 INFO L175 Difference]: Start difference. First operand has 334 places, 548 transitions, 10068 flow. Second operand 14 states and 1462 transitions. [2022-09-16 12:03:38,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 672 transitions, 14130 flow [2022-09-16 12:03:41,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 672 transitions, 14105 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-09-16 12:03:41,792 INFO L231 Difference]: Finished difference. Result has 343 places, 584 transitions, 11746 flow [2022-09-16 12:03:41,793 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=9895, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=11746, PETRI_PLACES=343, PETRI_TRANSITIONS=584} [2022-09-16 12:03:41,793 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 205 predicate places. [2022-09-16 12:03:41,793 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 584 transitions, 11746 flow [2022-09-16 12:03:41,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 101.61538461538461) internal successors, (1321), 13 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:41,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:41,793 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:03:41,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-09-16 12:03:42,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:42,007 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:03:42,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:42,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1814878941, now seen corresponding path program 4 times [2022-09-16 12:03:42,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:42,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342345084] [2022-09-16 12:03:42,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:42,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:43,228 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:03:43,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:43,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342345084] [2022-09-16 12:03:43,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342345084] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:43,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821683623] [2022-09-16 12:03:43,229 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 12:03:43,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:43,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:43,230 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:03:43,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-09-16 12:03:43,332 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 12:03:43,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:03:43,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-16 12:03:43,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:43,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 12:03:43,760 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 12:03:43,834 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 12:03:43,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 12:03:43,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:03:43,978 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_890 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_890) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) is different from false [2022-09-16 12:03:43,993 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:03:43,994 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 46 treesize of output 42 [2022-09-16 12:03:43,996 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-09-16 12:03:44,379 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 12:03:44,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821683623] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:44,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-16 12:03:44,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [26, 14] total 50 [2022-09-16 12:03:44,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398648508] [2022-09-16 12:03:44,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:03:44,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 12:03:44,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:44,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 12:03:44,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2306, Unknown=1, NotChecked=96, Total=2550 [2022-09-16 12:03:44,382 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 162 [2022-09-16 12:03:44,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 584 transitions, 11746 flow. Second operand has 13 states, 13 states have (on average 104.53846153846153) internal successors, (1359), 13 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:44,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:44,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 162 [2022-09-16 12:03:44,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:03:55,582 INFO L130 PetriNetUnfolder]: 14509/42850 cut-off events. [2022-09-16 12:03:55,582 INFO L131 PetriNetUnfolder]: For 1112562/1213842 co-relation queries the response was YES. [2022-09-16 12:03:56,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285651 conditions, 42850 events. 14509/42850 cut-off events. For 1112562/1213842 co-relation queries the response was YES. Maximal size of possible extension queue 1284. Compared 539860 event pairs, 1788 based on Foata normal form. 11679/53132 useless extension candidates. Maximal degree in co-relation 285574. Up to 18202 conditions per place. [2022-09-16 12:03:56,458 INFO L137 encePairwiseOnDemand]: 143/162 looper letters, 302 selfloop transitions, 205 changer transitions 24/649 dead transitions. [2022-09-16 12:03:56,458 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 649 transitions, 13789 flow [2022-09-16 12:03:56,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 12:03:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-09-16 12:03:56,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1603 transitions. [2022-09-16 12:03:56,460 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6596707818930041 [2022-09-16 12:03:56,460 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1603 transitions. [2022-09-16 12:03:56,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1603 transitions. [2022-09-16 12:03:56,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:56,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1603 transitions. [2022-09-16 12:03:56,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 106.86666666666666) internal successors, (1603), 15 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:56,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 162.0) internal successors, (2592), 16 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:56,463 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 162.0) internal successors, (2592), 16 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:56,463 INFO L175 Difference]: Start difference. First operand has 343 places, 584 transitions, 11746 flow. Second operand 15 states and 1603 transitions. [2022-09-16 12:03:56,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 649 transitions, 13789 flow [2022-09-16 12:03:59,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 649 transitions, 13501 flow, removed 84 selfloop flow, removed 10 redundant places. [2022-09-16 12:03:59,963 INFO L231 Difference]: Finished difference. Result has 350 places, 568 transitions, 11985 flow [2022-09-16 12:03:59,963 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=11458, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=11985, PETRI_PLACES=350, PETRI_TRANSITIONS=568} [2022-09-16 12:03:59,964 INFO L287 CegarLoopForPetriNet]: 138 programPoint places, 212 predicate places. [2022-09-16 12:03:59,964 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 568 transitions, 11985 flow [2022-09-16 12:03:59,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.53846153846153) internal successors, (1359), 13 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:59,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:59,964 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:03:59,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-09-16 12:04:00,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-09-16 12:04:00,165 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 12:04:00,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:04:00,165 INFO L85 PathProgramCache]: Analyzing trace with hash 743723125, now seen corresponding path program 2 times [2022-09-16 12:04:00,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:04:00,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082718100] [2022-09-16 12:04:00,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:04:00,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:04:00,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:04:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:04:00,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:04:00,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082718100] [2022-09-16 12:04:00,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082718100] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:04:00,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048860349] [2022-09-16 12:04:00,239 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:04:00,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:04:00,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:04:00,240 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:04:00,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-09-16 12:04:00,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:04:00,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:04:00,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:04:00,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:04:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-09-16 12:04:00,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:04:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-09-16 12:04:00,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048860349] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:04:00,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:04:00,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 16 [2022-09-16 12:04:00,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972280595] [2022-09-16 12:04:00,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:04:00,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 12:04:00,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:04:00,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 12:04:00,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-09-16 12:04:00,511 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 162 [2022-09-16 12:04:00,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 568 transitions, 11985 flow. Second operand has 16 states, 16 states have (on average 107.375) internal successors, (1718), 16 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:04:00,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:04:00,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 162 [2022-09-16 12:04:00,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand