/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 12:01:11,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 12:01:11,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 12:01:11,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 12:01:11,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 12:01:11,878 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 12:01:11,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 12:01:11,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 12:01:11,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 12:01:11,892 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 12:01:11,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 12:01:11,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 12:01:11,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 12:01:11,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 12:01:11,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 12:01:11,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 12:01:11,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 12:01:11,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 12:01:11,904 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 12:01:11,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 12:01:11,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 12:01:11,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 12:01:11,910 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 12:01:11,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 12:01:11,912 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 12:01:11,912 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 12:01:11,913 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 12:01:11,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 12:01:11,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 12:01:11,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 12:01:11,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 12:01:11,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 12:01:11,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 12:01:11,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 12:01:11,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 12:01:11,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 12:01:11,918 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 12:01:11,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 12:01:11,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 12:01:11,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 12:01:11,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 12:01:11,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 12:01:11,943 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 12:01:11,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 12:01:11,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 12:01:11,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 12:01:11,945 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 12:01:11,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 12:01:11,945 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 12:01:11,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 12:01:11,945 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 12:01:11,945 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 12:01:11,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 12:01:11,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 12:01:11,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 12:01:11,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 12:01:11,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 12:01:11,946 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 12:01:11,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 12:01:11,946 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 12:01:11,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 12:01:11,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 12:01:11,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 12:01:11,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 12:01:11,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 12:01:11,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:01:11,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 12:01:11,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 12:01:11,948 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 12:01:11,948 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 12:01:11,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 12:01:11,948 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 12:01:11,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 12:01:11,949 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 12:01:12,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 12:01:12,160 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 12:01:12,162 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 12:01:12,163 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 12:01:12,163 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 12:01:12,164 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2022-09-16 12:01:12,215 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55aeebf9e/7975eb01bd4048c0acc3505176bb1055/FLAG3f5fe357a [2022-09-16 12:01:12,583 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 12:01:12,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c [2022-09-16 12:01:12,589 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55aeebf9e/7975eb01bd4048c0acc3505176bb1055/FLAG3f5fe357a [2022-09-16 12:01:12,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55aeebf9e/7975eb01bd4048c0acc3505176bb1055 [2022-09-16 12:01:12,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 12:01:12,602 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 12:01:12,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 12:01:12,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 12:01:12,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 12:01:12,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@448e6380 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12, skipping insertion in model container [2022-09-16 12:01:12,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 12:01:12,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 12:01:12,783 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-09-16 12:01:12,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:01:12,794 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 12:01:12,821 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-min.wvr.c[2815,2828] [2022-09-16 12:01:12,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 12:01:12,835 INFO L208 MainTranslator]: Completed translation [2022-09-16 12:01:12,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12 WrapperNode [2022-09-16 12:01:12,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 12:01:12,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 12:01:12,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 12:01:12,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 12:01:12,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,883 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 284 [2022-09-16 12:01:12,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 12:01:12,884 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 12:01:12,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 12:01:12,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 12:01:12,893 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,896 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,896 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 12:01:12,915 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 12:01:12,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 12:01:12,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 12:01:12,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (1/1) ... [2022-09-16 12:01:12,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 12:01:12,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:12,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 12:01:12,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 12:01:12,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 12:01:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 12:01:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 12:01:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 12:01:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 12:01:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 12:01:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 12:01:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 12:01:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 12:01:12,977 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 12:01:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 12:01:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 12:01:12,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 12:01:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 12:01:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 12:01:12,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 12:01:12,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 12:01:12,979 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 12:01:13,077 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 12:01:13,079 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 12:01:13,500 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 12:01:13,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 12:01:13,702 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 12:01:13,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:01:13 BoogieIcfgContainer [2022-09-16 12:01:13,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 12:01:13,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 12:01:13,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 12:01:13,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 12:01:13,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 12:01:12" (1/3) ... [2022-09-16 12:01:13,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15721363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:01:13, skipping insertion in model container [2022-09-16 12:01:13,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 12:01:12" (2/3) ... [2022-09-16 12:01:13,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15721363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 12:01:13, skipping insertion in model container [2022-09-16 12:01:13,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 12:01:13" (3/3) ... [2022-09-16 12:01:13,717 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-min.wvr.c [2022-09-16 12:01:13,731 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 12:01:13,731 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-09-16 12:01:13,731 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 12:01:13,882 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 12:01:13,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 369 places, 390 transitions, 804 flow [2022-09-16 12:01:14,065 INFO L130 PetriNetUnfolder]: 31/387 cut-off events. [2022-09-16 12:01:14,065 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 12:01:14,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 387 events. 31/387 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 414 event pairs, 0 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 294. Up to 3 conditions per place. [2022-09-16 12:01:14,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 369 places, 390 transitions, 804 flow [2022-09-16 12:01:14,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 362 transitions, 742 flow [2022-09-16 12:01:14,101 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 12:01:14,109 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;@4cf1f8b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 12:01:14,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-09-16 12:01:14,121 INFO L130 PetriNetUnfolder]: 4/71 cut-off events. [2022-09-16 12:01:14,121 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 12:01:14,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:14,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:14,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:14,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:14,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1133252855, now seen corresponding path program 1 times [2022-09-16 12:01:14,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:14,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514434791] [2022-09-16 12:01:14,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:14,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:14,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:14,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514434791] [2022-09-16 12:01:14,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514434791] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:14,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:14,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:01:14,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075008047] [2022-09-16 12:01:14,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:14,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:01:14,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:14,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:01:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:01:14,433 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-09-16 12:01:14,437 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 362 transitions, 742 flow. Second operand has 4 states, 4 states have (on average 320.5) internal successors, (1282), 4 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:14,437 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:14,437 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-09-16 12:01:14,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:14,769 INFO L130 PetriNetUnfolder]: 159/882 cut-off events. [2022-09-16 12:01:14,770 INFO L131 PetriNetUnfolder]: For 146/146 co-relation queries the response was YES. [2022-09-16 12:01:14,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1253 conditions, 882 events. 159/882 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3208 event pairs, 74 based on Foata normal form. 117/750 useless extension candidates. Maximal degree in co-relation 536. Up to 150 conditions per place. [2022-09-16 12:01:14,779 INFO L137 encePairwiseOnDemand]: 351/390 looper letters, 76 selfloop transitions, 14 changer transitions 11/383 dead transitions. [2022-09-16 12:01:14,780 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 383 transitions, 982 flow [2022-09-16 12:01:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 12:01:14,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 12:01:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1722 transitions. [2022-09-16 12:01:14,794 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8830769230769231 [2022-09-16 12:01:14,795 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1722 transitions. [2022-09-16 12:01:14,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1722 transitions. [2022-09-16 12:01:14,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:14,799 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1722 transitions. [2022-09-16 12:01:14,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 344.4) internal successors, (1722), 5 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:14,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:14,813 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 390.0) internal successors, (2340), 6 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:14,816 INFO L175 Difference]: Start difference. First operand has 342 places, 362 transitions, 742 flow. Second operand 5 states and 1722 transitions. [2022-09-16 12:01:14,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 383 transitions, 982 flow [2022-09-16 12:01:14,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 383 transitions, 958 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-16 12:01:14,826 INFO L231 Difference]: Finished difference. Result has 341 places, 343 transitions, 774 flow [2022-09-16 12:01:14,828 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=774, PETRI_PLACES=341, PETRI_TRANSITIONS=343} [2022-09-16 12:01:14,830 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, -1 predicate places. [2022-09-16 12:01:14,831 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 343 transitions, 774 flow [2022-09-16 12:01:14,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 320.5) internal successors, (1282), 4 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:14,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:14,832 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:14,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 12:01:14,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:14,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1598332872, now seen corresponding path program 1 times [2022-09-16 12:01:14,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:14,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046620839] [2022-09-16 12:01:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:14,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:14,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:14,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046620839] [2022-09-16 12:01:14,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046620839] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:14,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255214205] [2022-09-16 12:01:14,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:14,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:14,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:14,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:14,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 12:01:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:14,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:01:14,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:15,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:15,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:15,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255214205] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:15,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:15,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 12:01:15,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854834443] [2022-09-16 12:01:15,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:15,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 12:01:15,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:15,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 12:01:15,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 12:01:15,096 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-09-16 12:01:15,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 343 transitions, 774 flow. Second operand has 12 states, 12 states have (on average 321.6666666666667) internal successors, (3860), 12 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:15,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:15,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-09-16 12:01:15,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:15,781 INFO L130 PetriNetUnfolder]: 396/2034 cut-off events. [2022-09-16 12:01:15,781 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2022-09-16 12:01:15,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2872 conditions, 2034 events. 396/2034 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11448 event pairs, 185 based on Foata normal form. 9/1473 useless extension candidates. Maximal degree in co-relation 1936. Up to 141 conditions per place. [2022-09-16 12:01:15,802 INFO L137 encePairwiseOnDemand]: 367/390 looper letters, 154 selfloop transitions, 62 changer transitions 0/498 dead transitions. [2022-09-16 12:01:15,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 498 transitions, 1618 flow [2022-09-16 12:01:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 12:01:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 12:01:15,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5967 transitions. [2022-09-16 12:01:15,811 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.85 [2022-09-16 12:01:15,811 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5967 transitions. [2022-09-16 12:01:15,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5967 transitions. [2022-09-16 12:01:15,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:15,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5967 transitions. [2022-09-16 12:01:15,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 331.5) internal successors, (5967), 18 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:15,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 390.0) internal successors, (7410), 19 states have internal predecessors, (7410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:15,839 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 390.0) internal successors, (7410), 19 states have internal predecessors, (7410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:15,840 INFO L175 Difference]: Start difference. First operand has 341 places, 343 transitions, 774 flow. Second operand 18 states and 5967 transitions. [2022-09-16 12:01:15,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 498 transitions, 1618 flow [2022-09-16 12:01:15,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 498 transitions, 1610 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:01:15,848 INFO L231 Difference]: Finished difference. Result has 350 places, 385 transitions, 1136 flow [2022-09-16 12:01:15,849 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=766, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1136, PETRI_PLACES=350, PETRI_TRANSITIONS=385} [2022-09-16 12:01:15,849 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 8 predicate places. [2022-09-16 12:01:15,850 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 385 transitions, 1136 flow [2022-09-16 12:01:15,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 321.6666666666667) internal successors, (3860), 12 states have internal predecessors, (3860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:15,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:15,852 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:15,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:16,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:16,070 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:16,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:16,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1991289503, now seen corresponding path program 1 times [2022-09-16 12:01:16,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:16,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045338821] [2022-09-16 12:01:16,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:16,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:16,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:16,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:16,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045338821] [2022-09-16 12:01:16,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045338821] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:16,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465029268] [2022-09-16 12:01:16,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:16,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:16,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:16,147 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:16,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 12:01:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:16,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 12:01:16,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:16,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:16,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 12:01:16,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465029268] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:16,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 12:01:16,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 12:01:16,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139607149] [2022-09-16 12:01:16,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:16,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:01:16,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:16,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:01:16,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:01:16,297 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 390 [2022-09-16 12:01:16,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 385 transitions, 1136 flow. Second operand has 6 states, 6 states have (on average 321.3333333333333) internal successors, (1928), 6 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:16,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:16,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 390 [2022-09-16 12:01:16,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:16,719 INFO L130 PetriNetUnfolder]: 396/2022 cut-off events. [2022-09-16 12:01:16,720 INFO L131 PetriNetUnfolder]: For 300/300 co-relation queries the response was YES. [2022-09-16 12:01:16,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2928 conditions, 2022 events. 396/2022 cut-off events. For 300/300 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 11351 event pairs, 185 based on Foata normal form. 12/1464 useless extension candidates. Maximal degree in co-relation 2297. Up to 492 conditions per place. [2022-09-16 12:01:16,736 INFO L137 encePairwiseOnDemand]: 373/390 looper letters, 77 selfloop transitions, 43 changer transitions 0/402 dead transitions. [2022-09-16 12:01:16,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 402 transitions, 1365 flow [2022-09-16 12:01:16,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 12:01:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 12:01:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2323 transitions. [2022-09-16 12:01:16,740 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8509157509157509 [2022-09-16 12:01:16,740 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2323 transitions. [2022-09-16 12:01:16,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2323 transitions. [2022-09-16 12:01:16,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:16,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2323 transitions. [2022-09-16 12:01:16,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 331.85714285714283) internal successors, (2323), 7 states have internal predecessors, (2323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:16,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:16,749 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 390.0) internal successors, (3120), 8 states have internal predecessors, (3120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:16,749 INFO L175 Difference]: Start difference. First operand has 350 places, 385 transitions, 1136 flow. Second operand 7 states and 2323 transitions. [2022-09-16 12:01:16,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 402 transitions, 1365 flow [2022-09-16 12:01:16,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 402 transitions, 1249 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-09-16 12:01:16,760 INFO L231 Difference]: Finished difference. Result has 344 places, 373 transitions, 1025 flow [2022-09-16 12:01:16,761 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1025, PETRI_PLACES=344, PETRI_TRANSITIONS=373} [2022-09-16 12:01:16,763 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 2 predicate places. [2022-09-16 12:01:16,763 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 373 transitions, 1025 flow [2022-09-16 12:01:16,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 321.3333333333333) internal successors, (1928), 6 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:16,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:16,764 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:16,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 12:01:16,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 12:01:16,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:16,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:16,980 INFO L85 PathProgramCache]: Analyzing trace with hash -89243447, now seen corresponding path program 2 times [2022-09-16 12:01:16,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:16,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907702403] [2022-09-16 12:01:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:16,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:17,090 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:17,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:17,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907702403] [2022-09-16 12:01:17,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907702403] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:17,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331034378] [2022-09-16 12:01:17,091 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:01:17,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:17,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:17,092 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:17,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 12:01:17,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 12:01:17,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:01:17,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 12:01:17,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:17,299 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 12:01:17,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:17,404 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 12:01:17,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331034378] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:17,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:17,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 12:01:17,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105463422] [2022-09-16 12:01:17,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:17,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 12:01:17,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:17,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 12:01:17,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 12:01:17,409 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 390 [2022-09-16 12:01:17,415 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 373 transitions, 1025 flow. Second operand has 18 states, 18 states have (on average 295.72222222222223) internal successors, (5323), 18 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:17,415 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:17,415 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 390 [2022-09-16 12:01:17,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:19,232 INFO L130 PetriNetUnfolder]: 3074/8288 cut-off events. [2022-09-16 12:01:19,233 INFO L131 PetriNetUnfolder]: For 528/528 co-relation queries the response was YES. [2022-09-16 12:01:19,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13178 conditions, 8288 events. 3074/8288 cut-off events. For 528/528 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 65870 event pairs, 1939 based on Foata normal form. 6/5060 useless extension candidates. Maximal degree in co-relation 10765. Up to 707 conditions per place. [2022-09-16 12:01:19,296 INFO L137 encePairwiseOnDemand]: 363/390 looper letters, 260 selfloop transitions, 81 changer transitions 0/596 dead transitions. [2022-09-16 12:01:19,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 596 transitions, 2256 flow [2022-09-16 12:01:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 12:01:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-09-16 12:01:19,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 7355 transitions. [2022-09-16 12:01:19,309 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7857905982905983 [2022-09-16 12:01:19,309 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 7355 transitions. [2022-09-16 12:01:19,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 7355 transitions. [2022-09-16 12:01:19,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:19,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 7355 transitions. [2022-09-16 12:01:19,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 306.4583333333333) internal successors, (7355), 24 states have internal predecessors, (7355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:19,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 390.0) internal successors, (9750), 25 states have internal predecessors, (9750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:19,343 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 390.0) internal successors, (9750), 25 states have internal predecessors, (9750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:19,343 INFO L175 Difference]: Start difference. First operand has 344 places, 373 transitions, 1025 flow. Second operand 24 states and 7355 transitions. [2022-09-16 12:01:19,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 596 transitions, 2256 flow [2022-09-16 12:01:19,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 596 transitions, 2165 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-09-16 12:01:19,352 INFO L231 Difference]: Finished difference. Result has 356 places, 389 transitions, 1188 flow [2022-09-16 12:01:19,352 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1188, PETRI_PLACES=356, PETRI_TRANSITIONS=389} [2022-09-16 12:01:19,353 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 14 predicate places. [2022-09-16 12:01:19,353 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 389 transitions, 1188 flow [2022-09-16 12:01:19,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 295.72222222222223) internal successors, (5323), 18 states have internal predecessors, (5323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:19,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:19,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:19,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:19,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:19,583 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:19,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:19,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1957827463, now seen corresponding path program 1 times [2022-09-16 12:01:19,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:19,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529389836] [2022-09-16 12:01:19,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:19,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:19,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:19,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:19,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529389836] [2022-09-16 12:01:19,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529389836] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:19,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:19,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 12:01:19,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770600561] [2022-09-16 12:01:19,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:19,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 12:01:19,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:19,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 12:01:19,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-09-16 12:01:19,694 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 390 [2022-09-16 12:01:19,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 389 transitions, 1188 flow. Second operand has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:19,696 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:19,696 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 390 [2022-09-16 12:01:19,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:20,743 INFO L130 PetriNetUnfolder]: 2635/7140 cut-off events. [2022-09-16 12:01:20,743 INFO L131 PetriNetUnfolder]: For 549/549 co-relation queries the response was YES. [2022-09-16 12:01:20,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11488 conditions, 7140 events. 2635/7140 cut-off events. For 549/549 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 55282 event pairs, 1662 based on Foata normal form. 3/4389 useless extension candidates. Maximal degree in co-relation 1810. Up to 3888 conditions per place. [2022-09-16 12:01:20,782 INFO L137 encePairwiseOnDemand]: 372/390 looper letters, 120 selfloop transitions, 25 changer transitions 0/393 dead transitions. [2022-09-16 12:01:20,783 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 393 transitions, 1482 flow [2022-09-16 12:01:20,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 12:01:20,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 12:01:20,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2167 transitions. [2022-09-16 12:01:20,787 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.694551282051282 [2022-09-16 12:01:20,787 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2167 transitions. [2022-09-16 12:01:20,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2167 transitions. [2022-09-16 12:01:20,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:20,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2167 transitions. [2022-09-16 12:01:20,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 270.875) internal successors, (2167), 8 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:20,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:20,795 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 390.0) internal successors, (3510), 9 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:20,795 INFO L175 Difference]: Start difference. First operand has 356 places, 389 transitions, 1188 flow. Second operand 8 states and 2167 transitions. [2022-09-16 12:01:20,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 393 transitions, 1482 flow [2022-09-16 12:01:20,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 393 transitions, 1318 flow, removed 12 selfloop flow, removed 16 redundant places. [2022-09-16 12:01:20,801 INFO L231 Difference]: Finished difference. Result has 348 places, 387 transitions, 1072 flow [2022-09-16 12:01:20,802 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1010, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1072, PETRI_PLACES=348, PETRI_TRANSITIONS=387} [2022-09-16 12:01:20,802 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 6 predicate places. [2022-09-16 12:01:20,802 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 387 transitions, 1072 flow [2022-09-16 12:01:20,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 263.0) internal successors, (2104), 8 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:20,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:20,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:20,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 12:01:20,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:20,804 INFO L85 PathProgramCache]: Analyzing trace with hash -870973157, now seen corresponding path program 1 times [2022-09-16 12:01:20,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:20,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880540168] [2022-09-16 12:01:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:20,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:21,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:21,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:21,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880540168] [2022-09-16 12:01:21,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880540168] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:21,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645085505] [2022-09-16 12:01:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:21,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:21,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:21,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:21,058 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 12:01:21,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:21,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 32 conjunts are in the unsatisfiable core [2022-09-16 12:01:21,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:21,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:01:21,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:01:21,357 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:01:21,357 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:01:21,382 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 12:01:21,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 12:01:21,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:21,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:21,597 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_146) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2022-09-16 12:01:21,644 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc32#1.base| v_ArrVal_146) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2022-09-16 12:01:22,204 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:22,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-09-16 12:01:22,213 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:22,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-09-16 12:01:22,217 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 11 treesize of output 9 [2022-09-16 12:01:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-09-16 12:01:22,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645085505] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:22,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:22,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2022-09-16 12:01:22,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355461994] [2022-09-16 12:01:22,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:22,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-09-16 12:01:22,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:22,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-09-16 12:01:22,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=934, Unknown=9, NotChecked=126, Total=1190 [2022-09-16 12:01:22,374 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 390 [2022-09-16 12:01:22,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 387 transitions, 1072 flow. Second operand has 35 states, 35 states have (on average 243.28571428571428) internal successors, (8515), 35 states have internal predecessors, (8515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:22,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:22,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 390 [2022-09-16 12:01:22,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:30,598 INFO L130 PetriNetUnfolder]: 19663/47628 cut-off events. [2022-09-16 12:01:30,598 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2022-09-16 12:01:30,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74198 conditions, 47628 events. 19663/47628 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 875. Compared 515992 event pairs, 10968 based on Foata normal form. 0/31188 useless extension candidates. Maximal degree in co-relation 54480. Up to 6402 conditions per place. [2022-09-16 12:01:30,942 INFO L137 encePairwiseOnDemand]: 345/390 looper letters, 347 selfloop transitions, 81 changer transitions 0/648 dead transitions. [2022-09-16 12:01:30,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 648 transitions, 2539 flow [2022-09-16 12:01:30,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-09-16 12:01:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-09-16 12:01:30,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 9266 transitions. [2022-09-16 12:01:30,955 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6421344421344422 [2022-09-16 12:01:30,955 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 9266 transitions. [2022-09-16 12:01:30,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 9266 transitions. [2022-09-16 12:01:30,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:30,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 9266 transitions. [2022-09-16 12:01:31,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 250.43243243243242) internal successors, (9266), 37 states have internal predecessors, (9266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:31,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 390.0) internal successors, (14820), 38 states have internal predecessors, (14820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:31,132 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 390.0) internal successors, (14820), 38 states have internal predecessors, (14820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:31,133 INFO L175 Difference]: Start difference. First operand has 348 places, 387 transitions, 1072 flow. Second operand 37 states and 9266 transitions. [2022-09-16 12:01:31,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 648 transitions, 2539 flow [2022-09-16 12:01:31,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 648 transitions, 2485 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 12:01:31,143 INFO L231 Difference]: Finished difference. Result has 398 places, 442 transitions, 1474 flow [2022-09-16 12:01:31,144 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1022, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1474, PETRI_PLACES=398, PETRI_TRANSITIONS=442} [2022-09-16 12:01:31,146 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 56 predicate places. [2022-09-16 12:01:31,146 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 442 transitions, 1474 flow [2022-09-16 12:01:31,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 243.28571428571428) internal successors, (8515), 35 states have internal predecessors, (8515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:31,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:31,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:31,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:31,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:31,367 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:31,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1230363251, now seen corresponding path program 1 times [2022-09-16 12:01:31,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:31,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086022259] [2022-09-16 12:01:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:31,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:31,420 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:01:31,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:31,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086022259] [2022-09-16 12:01:31,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086022259] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:31,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:31,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:01:31,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432976775] [2022-09-16 12:01:31,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:31,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:01:31,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:31,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:01:31,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:01:31,425 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-09-16 12:01:31,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 442 transitions, 1474 flow. Second operand has 4 states, 4 states have (on average 310.5) internal successors, (1242), 4 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:31,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:31,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-09-16 12:01:31,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:33,212 INFO L130 PetriNetUnfolder]: 2239/9294 cut-off events. [2022-09-16 12:01:33,212 INFO L131 PetriNetUnfolder]: For 944/944 co-relation queries the response was YES. [2022-09-16 12:01:33,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14257 conditions, 9294 events. 2239/9294 cut-off events. For 944/944 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 88240 event pairs, 1110 based on Foata normal form. 36/6300 useless extension candidates. Maximal degree in co-relation 13812. Up to 2287 conditions per place. [2022-09-16 12:01:33,308 INFO L137 encePairwiseOnDemand]: 377/390 looper letters, 86 selfloop transitions, 10 changer transitions 0/466 dead transitions. [2022-09-16 12:01:33,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 466 transitions, 1701 flow [2022-09-16 12:01:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 12:01:33,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 12:01:33,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1327 transitions. [2022-09-16 12:01:33,316 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8506410256410256 [2022-09-16 12:01:33,316 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1327 transitions. [2022-09-16 12:01:33,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1327 transitions. [2022-09-16 12:01:33,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:33,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1327 transitions. [2022-09-16 12:01:33,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 331.75) internal successors, (1327), 4 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:33,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:33,321 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:33,321 INFO L175 Difference]: Start difference. First operand has 398 places, 442 transitions, 1474 flow. Second operand 4 states and 1327 transitions. [2022-09-16 12:01:33,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 466 transitions, 1701 flow [2022-09-16 12:01:33,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 466 transitions, 1695 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 12:01:33,331 INFO L231 Difference]: Finished difference. Result has 400 places, 440 transitions, 1499 flow [2022-09-16 12:01:33,331 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1499, PETRI_PLACES=400, PETRI_TRANSITIONS=440} [2022-09-16 12:01:33,332 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 58 predicate places. [2022-09-16 12:01:33,332 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 440 transitions, 1499 flow [2022-09-16 12:01:33,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 310.5) internal successors, (1242), 4 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:33,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:33,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:33,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 12:01:33,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:33,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:33,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1909301833, now seen corresponding path program 2 times [2022-09-16 12:01:33,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:33,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885897144] [2022-09-16 12:01:33,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:33,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:33,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:33,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885897144] [2022-09-16 12:01:33,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885897144] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:33,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696457784] [2022-09-16 12:01:33,492 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:01:33,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:33,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:33,493 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:33,494 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 12:01:33,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 12:01:33,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:01:33,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 12:01:33,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:33,825 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:33,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:34,110 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:34,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696457784] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:34,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:34,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 32 [2022-09-16 12:01:34,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491170519] [2022-09-16 12:01:34,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:34,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-16 12:01:34,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:34,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-16 12:01:34,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2022-09-16 12:01:34,117 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 390 [2022-09-16 12:01:34,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 440 transitions, 1499 flow. Second operand has 32 states, 32 states have (on average 299.09375) internal successors, (9571), 32 states have internal predecessors, (9571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:34,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:34,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 390 [2022-09-16 12:01:34,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:38,376 INFO L130 PetriNetUnfolder]: 7385/18970 cut-off events. [2022-09-16 12:01:38,376 INFO L131 PetriNetUnfolder]: For 1085/1085 co-relation queries the response was YES. [2022-09-16 12:01:38,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30849 conditions, 18970 events. 7385/18970 cut-off events. For 1085/1085 co-relation queries the response was YES. Maximal size of possible extension queue 417. Compared 182163 event pairs, 4709 based on Foata normal form. 4/11338 useless extension candidates. Maximal degree in co-relation 26900. Up to 9190 conditions per place. [2022-09-16 12:01:38,736 INFO L137 encePairwiseOnDemand]: 364/390 looper letters, 103 selfloop transitions, 99 changer transitions 0/490 dead transitions. [2022-09-16 12:01:38,736 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 490 transitions, 2038 flow [2022-09-16 12:01:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-09-16 12:01:38,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-09-16 12:01:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 8717 transitions. [2022-09-16 12:01:38,745 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7707338638373121 [2022-09-16 12:01:38,745 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 8717 transitions. [2022-09-16 12:01:38,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 8717 transitions. [2022-09-16 12:01:38,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:38,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 8717 transitions. [2022-09-16 12:01:38,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 300.58620689655174) internal successors, (8717), 29 states have internal predecessors, (8717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:38,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 390.0) internal successors, (11700), 30 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:38,774 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 390.0) internal successors, (11700), 30 states have internal predecessors, (11700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:38,774 INFO L175 Difference]: Start difference. First operand has 400 places, 440 transitions, 1499 flow. Second operand 29 states and 8717 transitions. [2022-09-16 12:01:38,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 490 transitions, 2038 flow [2022-09-16 12:01:38,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 490 transitions, 2024 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-09-16 12:01:39,104 INFO L231 Difference]: Finished difference. Result has 422 places, 444 transitions, 1754 flow [2022-09-16 12:01:39,105 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1417, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1754, PETRI_PLACES=422, PETRI_TRANSITIONS=444} [2022-09-16 12:01:39,105 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 80 predicate places. [2022-09-16 12:01:39,105 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 444 transitions, 1754 flow [2022-09-16 12:01:39,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 299.09375) internal successors, (9571), 32 states have internal predecessors, (9571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:39,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:39,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:01:39,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:39,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:39,309 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:39,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:39,310 INFO L85 PathProgramCache]: Analyzing trace with hash 767426956, now seen corresponding path program 1 times [2022-09-16 12:01:39,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:39,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671379131] [2022-09-16 12:01:39,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:39,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:39,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:01:39,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:39,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671379131] [2022-09-16 12:01:39,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671379131] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:39,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:39,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:01:39,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572939439] [2022-09-16 12:01:39,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:39,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:01:39,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:01:39,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:01:39,355 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-09-16 12:01:39,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 444 transitions, 1754 flow. Second operand has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:39,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:39,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-09-16 12:01:39,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:40,555 INFO L130 PetriNetUnfolder]: 1264/5562 cut-off events. [2022-09-16 12:01:40,556 INFO L131 PetriNetUnfolder]: For 837/837 co-relation queries the response was YES. [2022-09-16 12:01:40,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8820 conditions, 5562 events. 1264/5562 cut-off events. For 837/837 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 44680 event pairs, 629 based on Foata normal form. 12/3854 useless extension candidates. Maximal degree in co-relation 7327. Up to 1408 conditions per place. [2022-09-16 12:01:40,620 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 82 selfloop transitions, 8 changer transitions 0/468 dead transitions. [2022-09-16 12:01:40,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 468 transitions, 1980 flow [2022-09-16 12:01:40,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 12:01:40,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 12:01:40,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1323 transitions. [2022-09-16 12:01:40,622 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8480769230769231 [2022-09-16 12:01:40,622 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1323 transitions. [2022-09-16 12:01:40,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1323 transitions. [2022-09-16 12:01:40,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:40,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1323 transitions. [2022-09-16 12:01:40,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 330.75) internal successors, (1323), 4 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:40,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:40,625 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:40,626 INFO L175 Difference]: Start difference. First operand has 422 places, 444 transitions, 1754 flow. Second operand 4 states and 1323 transitions. [2022-09-16 12:01:40,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 468 transitions, 1980 flow [2022-09-16 12:01:40,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 468 transitions, 1849 flow, removed 8 selfloop flow, removed 12 redundant places. [2022-09-16 12:01:40,636 INFO L231 Difference]: Finished difference. Result has 413 places, 442 transitions, 1627 flow [2022-09-16 12:01:40,636 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1627, PETRI_PLACES=413, PETRI_TRANSITIONS=442} [2022-09-16 12:01:40,637 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 71 predicate places. [2022-09-16 12:01:40,637 INFO L495 AbstractCegarLoop]: Abstraction has has 413 places, 442 transitions, 1627 flow [2022-09-16 12:01:40,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.0) internal successors, (1244), 4 states have internal predecessors, (1244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:40,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:40,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:40,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 12:01:40,638 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:40,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1979567264, now seen corresponding path program 1 times [2022-09-16 12:01:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:40,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757382161] [2022-09-16 12:01:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:40,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:40,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:40,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757382161] [2022-09-16 12:01:40,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757382161] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:40,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020720276] [2022-09-16 12:01:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:40,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:40,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:40,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:40,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 12:01:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:40,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 32 conjunts are in the unsatisfiable core [2022-09-16 12:01:40,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:40,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:01:41,056 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:01:41,155 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:01:41,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:01:41,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 12:01:41,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-09-16 12:01:41,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 12:01:41,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:41,314 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_262) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-09-16 12:01:41,341 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc32#1.base| v_ArrVal_262) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-09-16 12:01:41,556 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:41,557 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-09-16 12:01:41,561 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:41,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-09-16 12:01:41,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-09-16 12:01:41,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-09-16 12:01:41,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020720276] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:41,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:41,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 35 [2022-09-16 12:01:41,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085293664] [2022-09-16 12:01:41,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:41,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-09-16 12:01:41,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:41,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-09-16 12:01:41,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=992, Unknown=9, NotChecked=130, Total=1260 [2022-09-16 12:01:41,691 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 390 [2022-09-16 12:01:41,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 413 places, 442 transitions, 1627 flow. Second operand has 36 states, 36 states have (on average 243.38888888888889) internal successors, (8762), 36 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:41,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:41,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 390 [2022-09-16 12:01:41,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:48,381 INFO L130 PetriNetUnfolder]: 13912/33849 cut-off events. [2022-09-16 12:01:48,382 INFO L131 PetriNetUnfolder]: For 545/545 co-relation queries the response was YES. [2022-09-16 12:01:48,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53277 conditions, 33849 events. 13912/33849 cut-off events. For 545/545 co-relation queries the response was YES. Maximal size of possible extension queue 676. Compared 344311 event pairs, 7769 based on Foata normal form. 0/22253 useless extension candidates. Maximal degree in co-relation 46579. Up to 10580 conditions per place. [2022-09-16 12:01:48,871 INFO L137 encePairwiseOnDemand]: 355/390 looper letters, 241 selfloop transitions, 52 changer transitions 0/519 dead transitions. [2022-09-16 12:01:48,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 519 transitions, 2409 flow [2022-09-16 12:01:48,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-09-16 12:01:48,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-09-16 12:01:48,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6475 transitions. [2022-09-16 12:01:48,979 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.638560157790927 [2022-09-16 12:01:48,979 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6475 transitions. [2022-09-16 12:01:48,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6475 transitions. [2022-09-16 12:01:48,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:48,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6475 transitions. [2022-09-16 12:01:48,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 249.03846153846155) internal successors, (6475), 26 states have internal predecessors, (6475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:48,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 390.0) internal successors, (10530), 27 states have internal predecessors, (10530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:48,999 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 390.0) internal successors, (10530), 27 states have internal predecessors, (10530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:49,000 INFO L175 Difference]: Start difference. First operand has 413 places, 442 transitions, 1627 flow. Second operand 26 states and 6475 transitions. [2022-09-16 12:01:49,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 519 transitions, 2409 flow [2022-09-16 12:01:49,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 519 transitions, 2392 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-16 12:01:49,012 INFO L231 Difference]: Finished difference. Result has 438 places, 445 transitions, 1767 flow [2022-09-16 12:01:49,014 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1615, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1767, PETRI_PLACES=438, PETRI_TRANSITIONS=445} [2022-09-16 12:01:49,014 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 96 predicate places. [2022-09-16 12:01:49,014 INFO L495 AbstractCegarLoop]: Abstraction has has 438 places, 445 transitions, 1767 flow [2022-09-16 12:01:49,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 243.38888888888889) internal successors, (8762), 36 states have internal predecessors, (8762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:49,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:49,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:49,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 12:01:49,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:49,236 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:49,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:49,237 INFO L85 PathProgramCache]: Analyzing trace with hash 462319179, now seen corresponding path program 1 times [2022-09-16 12:01:49,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:49,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032908889] [2022-09-16 12:01:49,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:49,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:49,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:01:49,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:49,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032908889] [2022-09-16 12:01:49,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032908889] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:01:49,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:01:49,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 12:01:49,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245113084] [2022-09-16 12:01:49,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:01:49,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 12:01:49,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:49,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 12:01:49,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 12:01:49,275 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 390 [2022-09-16 12:01:49,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 438 places, 445 transitions, 1767 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:49,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:49,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 390 [2022-09-16 12:01:49,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:01:50,393 INFO L130 PetriNetUnfolder]: 1337/5810 cut-off events. [2022-09-16 12:01:50,397 INFO L131 PetriNetUnfolder]: For 958/958 co-relation queries the response was YES. [2022-09-16 12:01:50,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9275 conditions, 5810 events. 1337/5810 cut-off events. For 958/958 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 46852 event pairs, 666 based on Foata normal form. 12/4016 useless extension candidates. Maximal degree in co-relation 7857. Up to 1548 conditions per place. [2022-09-16 12:01:50,449 INFO L137 encePairwiseOnDemand]: 381/390 looper letters, 81 selfloop transitions, 8 changer transitions 0/469 dead transitions. [2022-09-16 12:01:50,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 469 transitions, 1994 flow [2022-09-16 12:01:50,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 12:01:50,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-16 12:01:50,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1319 transitions. [2022-09-16 12:01:50,451 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8455128205128205 [2022-09-16 12:01:50,451 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1319 transitions. [2022-09-16 12:01:50,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1319 transitions. [2022-09-16 12:01:50,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:01:50,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1319 transitions. [2022-09-16 12:01:50,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 329.75) internal successors, (1319), 4 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:50,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:50,454 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:50,454 INFO L175 Difference]: Start difference. First operand has 438 places, 445 transitions, 1767 flow. Second operand 4 states and 1319 transitions. [2022-09-16 12:01:50,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 469 transitions, 1994 flow [2022-09-16 12:01:50,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 469 transitions, 1925 flow, removed 1 selfloop flow, removed 19 redundant places. [2022-09-16 12:01:50,465 INFO L231 Difference]: Finished difference. Result has 422 places, 445 transitions, 1725 flow [2022-09-16 12:01:50,466 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1678, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1725, PETRI_PLACES=422, PETRI_TRANSITIONS=445} [2022-09-16 12:01:50,466 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 80 predicate places. [2022-09-16 12:01:50,466 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 445 transitions, 1725 flow [2022-09-16 12:01:50,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:50,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:01:50,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:01:50,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 12:01:50,467 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:01:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:01:50,467 INFO L85 PathProgramCache]: Analyzing trace with hash -2137261565, now seen corresponding path program 1 times [2022-09-16 12:01:50,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:01:50,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338736287] [2022-09-16 12:01:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:50,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:01:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:50,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:01:50,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338736287] [2022-09-16 12:01:50,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338736287] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:01:50,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544931974] [2022-09-16 12:01:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:01:50,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:01:50,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:01:50,753 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:01:50,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 12:01:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:01:50,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 46 conjunts are in the unsatisfiable core [2022-09-16 12:01:50,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:01:50,869 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:01:50,934 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:01:51,042 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-09-16 12:01:51,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-09-16 12:01:51,069 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 12:01:51,155 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:01:51,156 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:01:51,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 12:01:51,200 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-09-16 12:01:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:01:51,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:01:51,465 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_322) c_~A~0.base) c_~A~0.offset) 2147483647)) is different from false [2022-09-16 12:01:51,475 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc32#1.base| v_ArrVal_322) c_~A~0.base) c_~A~0.offset) 2147483647)) is different from false [2022-09-16 12:01:51,964 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:51,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2022-09-16 12:01:51,970 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:01:51,970 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-09-16 12:01:51,973 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-09-16 12:01:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 12:01:52,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544931974] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:01:52,103 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:01:52,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 22] total 45 [2022-09-16 12:01:52,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800048973] [2022-09-16 12:01:52,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:01:52,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-09-16 12:01:52,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:01:52,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-09-16 12:01:52,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1703, Unknown=18, NotChecked=170, Total=2070 [2022-09-16 12:01:52,109 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 390 [2022-09-16 12:01:52,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 445 transitions, 1725 flow. Second operand has 46 states, 46 states have (on average 170.19565217391303) internal successors, (7829), 46 states have internal predecessors, (7829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:01:52,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:01:52,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 390 [2022-09-16 12:01:52,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:00,414 INFO L130 PetriNetUnfolder]: 14729/35760 cut-off events. [2022-09-16 12:02:00,414 INFO L131 PetriNetUnfolder]: For 673/673 co-relation queries the response was YES. [2022-09-16 12:02:00,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56851 conditions, 35760 events. 14729/35760 cut-off events. For 673/673 co-relation queries the response was YES. Maximal size of possible extension queue 677. Compared 364543 event pairs, 8226 based on Foata normal form. 0/23522 useless extension candidates. Maximal degree in co-relation 47558. Up to 15351 conditions per place. [2022-09-16 12:02:00,825 INFO L137 encePairwiseOnDemand]: 328/390 looper letters, 310 selfloop transitions, 105 changer transitions 1/585 dead transitions. [2022-09-16 12:02:00,825 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 585 transitions, 2933 flow [2022-09-16 12:02:00,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-09-16 12:02:00,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-09-16 12:02:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 9173 transitions. [2022-09-16 12:02:00,832 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.44378326076439284 [2022-09-16 12:02:00,832 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 9173 transitions. [2022-09-16 12:02:00,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 9173 transitions. [2022-09-16 12:02:00,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:00,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 9173 transitions. [2022-09-16 12:02:00,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 173.0754716981132) internal successors, (9173), 53 states have internal predecessors, (9173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:00,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 390.0) internal successors, (21060), 54 states have internal predecessors, (21060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:00,856 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 390.0) internal successors, (21060), 54 states have internal predecessors, (21060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:00,856 INFO L175 Difference]: Start difference. First operand has 422 places, 445 transitions, 1725 flow. Second operand 53 states and 9173 transitions. [2022-09-16 12:02:00,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 585 transitions, 2933 flow [2022-09-16 12:02:00,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 585 transitions, 2924 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 12:02:00,868 INFO L231 Difference]: Finished difference. Result has 494 places, 484 transitions, 2201 flow [2022-09-16 12:02:00,868 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=1719, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=2201, PETRI_PLACES=494, PETRI_TRANSITIONS=484} [2022-09-16 12:02:00,869 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 152 predicate places. [2022-09-16 12:02:00,869 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 484 transitions, 2201 flow [2022-09-16 12:02:00,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 170.19565217391303) internal successors, (7829), 46 states have internal predecessors, (7829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:00,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:00,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:02:00,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 12:02:01,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:01,082 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:02:01,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:01,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1830598075, now seen corresponding path program 1 times [2022-09-16 12:02:01,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:01,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590990663] [2022-09-16 12:02:01,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:01,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:01,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:01,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:01,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590990663] [2022-09-16 12:02:01,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590990663] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:01,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482723960] [2022-09-16 12:02:01,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:01,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:01,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:01,372 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:02:01,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 12:02:01,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:01,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 45 conjunts are in the unsatisfiable core [2022-09-16 12:02:01,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:01,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:02:01,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:02:01,739 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-09-16 12:02:01,740 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-09-16 12:02:01,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 12:02:01,829 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:02:01,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:02:01,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 12:02:01,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 12:02:02,003 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 12:02:02,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:02:02,140 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset) 2147483648))) is different from false [2022-09-16 12:02:02,149 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_364 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc32#1.base| v_ArrVal_364) c_~A~0.base) c_~A~0.offset) 2147483648))) is different from false [2022-09-16 12:02:02,555 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:02:02,555 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-09-16 12:02:02,560 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:02:02,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 36 [2022-09-16 12:02:02,562 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 11 treesize of output 9 [2022-09-16 12:02:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 12:02:02,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482723960] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:02:02,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:02:02,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22, 21] total 43 [2022-09-16 12:02:02,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109204507] [2022-09-16 12:02:02,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:02:02,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-09-16 12:02:02,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-09-16 12:02:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1541, Unknown=18, NotChecked=162, Total=1892 [2022-09-16 12:02:02,683 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 390 [2022-09-16 12:02:02,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 484 transitions, 2201 flow. Second operand has 44 states, 44 states have (on average 176.3181818181818) internal successors, (7758), 44 states have internal predecessors, (7758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:02,686 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:02,686 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 390 [2022-09-16 12:02:02,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:11,624 INFO L130 PetriNetUnfolder]: 14729/35746 cut-off events. [2022-09-16 12:02:11,624 INFO L131 PetriNetUnfolder]: For 1283/1283 co-relation queries the response was YES. [2022-09-16 12:02:12,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57274 conditions, 35746 events. 14729/35746 cut-off events. For 1283/1283 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 364563 event pairs, 8226 based on Foata normal form. 6/23556 useless extension candidates. Maximal degree in co-relation 51021. Up to 15406 conditions per place. [2022-09-16 12:02:12,275 INFO L137 encePairwiseOnDemand]: 332/390 looper letters, 318 selfloop transitions, 101 changer transitions 1/602 dead transitions. [2022-09-16 12:02:12,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 541 places, 602 transitions, 3381 flow [2022-09-16 12:02:12,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-09-16 12:02:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-09-16 12:02:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 8633 transitions. [2022-09-16 12:02:12,292 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.46116452991452994 [2022-09-16 12:02:12,292 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 8633 transitions. [2022-09-16 12:02:12,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 8633 transitions. [2022-09-16 12:02:12,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:12,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 8633 transitions. [2022-09-16 12:02:12,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 179.85416666666666) internal successors, (8633), 48 states have internal predecessors, (8633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:12,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 390.0) internal successors, (19110), 49 states have internal predecessors, (19110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:12,328 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 390.0) internal successors, (19110), 49 states have internal predecessors, (19110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:12,328 INFO L175 Difference]: Start difference. First operand has 494 places, 484 transitions, 2201 flow. Second operand 48 states and 8633 transitions. [2022-09-16 12:02:12,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 541 places, 602 transitions, 3381 flow [2022-09-16 12:02:12,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 602 transitions, 3264 flow, removed 5 selfloop flow, removed 16 redundant places. [2022-09-16 12:02:12,348 INFO L231 Difference]: Finished difference. Result has 535 places, 501 transitions, 2447 flow [2022-09-16 12:02:12,348 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=2089, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=2447, PETRI_PLACES=535, PETRI_TRANSITIONS=501} [2022-09-16 12:02:12,349 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 193 predicate places. [2022-09-16 12:02:12,349 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 501 transitions, 2447 flow [2022-09-16 12:02:12,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 176.3181818181818) internal successors, (7758), 44 states have internal predecessors, (7758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:12,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:12,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:02:12,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 12:02:12,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-16 12:02:12,569 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:02:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:12,570 INFO L85 PathProgramCache]: Analyzing trace with hash -590101487, now seen corresponding path program 1 times [2022-09-16 12:02:12,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:12,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804430093] [2022-09-16 12:02:12,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:12,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:12,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 12:02:12,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:12,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804430093] [2022-09-16 12:02:12,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804430093] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 12:02:12,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 12:02:12,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 12:02:12,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892036697] [2022-09-16 12:02:12,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 12:02:12,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 12:02:12,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:12,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 12:02:12,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-09-16 12:02:12,623 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 390 [2022-09-16 12:02:12,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 501 transitions, 2447 flow. Second operand has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:12,624 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:12,624 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 390 [2022-09-16 12:02:12,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:13,962 INFO L130 PetriNetUnfolder]: 1337/5782 cut-off events. [2022-09-16 12:02:13,962 INFO L131 PetriNetUnfolder]: For 2072/2072 co-relation queries the response was YES. [2022-09-16 12:02:14,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10345 conditions, 5782 events. 1337/5782 cut-off events. For 2072/2072 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 46638 event pairs, 666 based on Foata normal form. 12/4066 useless extension candidates. Maximal degree in co-relation 9799. Up to 2116 conditions per place. [2022-09-16 12:02:14,044 INFO L137 encePairwiseOnDemand]: 377/390 looper letters, 133 selfloop transitions, 19 changer transitions 0/511 dead transitions. [2022-09-16 12:02:14,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 511 transitions, 2789 flow [2022-09-16 12:02:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 12:02:14,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 12:02:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1606 transitions. [2022-09-16 12:02:14,046 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6863247863247863 [2022-09-16 12:02:14,046 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1606 transitions. [2022-09-16 12:02:14,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1606 transitions. [2022-09-16 12:02:14,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:02:14,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1606 transitions. [2022-09-16 12:02:14,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 267.6666666666667) internal successors, (1606), 6 states have internal predecessors, (1606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:14,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:14,054 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 390.0) internal successors, (2730), 7 states have internal predecessors, (2730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:14,054 INFO L175 Difference]: Start difference. First operand has 535 places, 501 transitions, 2447 flow. Second operand 6 states and 1606 transitions. [2022-09-16 12:02:14,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 511 transitions, 2789 flow [2022-09-16 12:02:14,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 511 transitions, 2636 flow, removed 12 selfloop flow, removed 30 redundant places. [2022-09-16 12:02:14,073 INFO L231 Difference]: Finished difference. Result has 515 places, 509 transitions, 2422 flow [2022-09-16 12:02:14,074 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2422, PETRI_PLACES=515, PETRI_TRANSITIONS=509} [2022-09-16 12:02:14,074 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 173 predicate places. [2022-09-16 12:02:14,075 INFO L495 AbstractCegarLoop]: Abstraction has has 515 places, 509 transitions, 2422 flow [2022-09-16 12:02:14,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.8333333333333) internal successors, (1541), 6 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:14,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:02:14,075 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:02:14,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 12:02:14,076 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:02:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:02:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash 317891719, now seen corresponding path program 3 times [2022-09-16 12:02:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:02:14,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676880703] [2022-09-16 12:02:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:02:14,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:02:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:02:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-09-16 12:02:14,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:02:14,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676880703] [2022-09-16 12:02:14,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676880703] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:02:14,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390915327] [2022-09-16 12:02:14,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 12:02:14,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:02:14,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:02:14,362 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 12:02:14,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 12:02:14,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-16 12:02:14,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:02:14,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 46 conjunts are in the unsatisfiable core [2022-09-16 12:02:14,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:02:14,531 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 12:02:14,660 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 12:02:14,729 INFO L356 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-09-16 12:02:14,730 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 12:02:15,103 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:02:15,104 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 12:02:15,198 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 12:02:15,294 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 12:02:15,317 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-09-16 12:02:15,344 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 12:02:15,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:02:15,435 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_437 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_437) c_~B~0.base) c_~B~0.offset) 9223372039002259456))) is different from false [2022-09-16 12:02:15,441 WARN L833 $PredicateComparison]: unable to prove that (or (not (< |c_ULTIMATE.start_create_fresh_int_array_~i~3#1| |c_ULTIMATE.start_create_fresh_int_array_~size#1|)) (forall ((v_ArrVal_437 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_437) c_~B~0.base) c_~B~0.offset) 9223372039002259456)))) is different from false [2022-09-16 12:02:16,272 INFO L356 Elim1Store]: treesize reduction 20, result has 63.0 percent of original size [2022-09-16 12:02:16,272 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 46 [2022-09-16 12:02:16,283 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:02:16,283 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 45 [2022-09-16 12:02:16,287 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-09-16 12:02:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 5 not checked. [2022-09-16 12:02:16,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390915327] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:02:16,645 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:02:16,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 27, 27] total 65 [2022-09-16 12:02:16,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320306712] [2022-09-16 12:02:16,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:02:16,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-09-16 12:02:16,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:02:16,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-09-16 12:02:16,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=3748, Unknown=16, NotChecked=250, Total=4290 [2022-09-16 12:02:16,652 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 390 [2022-09-16 12:02:16,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 509 transitions, 2422 flow. Second operand has 66 states, 66 states have (on average 207.53030303030303) internal successors, (13697), 66 states have internal predecessors, (13697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:02:16,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:02:16,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 390 [2022-09-16 12:02:16,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 12:02:59,746 INFO L130 PetriNetUnfolder]: 74981/167111 cut-off events. [2022-09-16 12:02:59,747 INFO L131 PetriNetUnfolder]: For 3922/3922 co-relation queries the response was YES. [2022-09-16 12:03:03,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267519 conditions, 167111 events. 74981/167111 cut-off events. For 3922/3922 co-relation queries the response was YES. Maximal size of possible extension queue 2860. Compared 1990073 event pairs, 50193 based on Foata normal form. 5/108409 useless extension candidates. Maximal degree in co-relation 259351. Up to 51354 conditions per place. [2022-09-16 12:03:04,156 INFO L137 encePairwiseOnDemand]: 331/390 looper letters, 468 selfloop transitions, 178 changer transitions 1/860 dead transitions. [2022-09-16 12:03:04,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 860 transitions, 5202 flow [2022-09-16 12:03:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-09-16 12:03:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2022-09-16 12:03:04,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 15244 transitions. [2022-09-16 12:03:04,167 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5428774928774929 [2022-09-16 12:03:04,167 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 15244 transitions. [2022-09-16 12:03:04,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 15244 transitions. [2022-09-16 12:03:04,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 12:03:04,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 15244 transitions. [2022-09-16 12:03:04,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 211.72222222222223) internal successors, (15244), 72 states have internal predecessors, (15244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:04,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 390.0) internal successors, (28470), 73 states have internal predecessors, (28470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:04,204 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 390.0) internal successors, (28470), 73 states have internal predecessors, (28470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:04,204 INFO L175 Difference]: Start difference. First operand has 515 places, 509 transitions, 2422 flow. Second operand 72 states and 15244 transitions. [2022-09-16 12:03:04,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 860 transitions, 5202 flow [2022-09-16 12:03:04,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 860 transitions, 5178 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-09-16 12:03:04,233 INFO L231 Difference]: Finished difference. Result has 596 places, 582 transitions, 3308 flow [2022-09-16 12:03:04,234 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=390, PETRI_DIFFERENCE_MINUEND_FLOW=2407, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=3308, PETRI_PLACES=596, PETRI_TRANSITIONS=582} [2022-09-16 12:03:04,234 INFO L287 CegarLoopForPetriNet]: 342 programPoint places, 254 predicate places. [2022-09-16 12:03:04,235 INFO L495 AbstractCegarLoop]: Abstraction has has 596 places, 582 transitions, 3308 flow [2022-09-16 12:03:04,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 207.53030303030303) internal successors, (13697), 66 states have internal predecessors, (13697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:04,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 12:03:04,236 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 12:03:04,271 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 12:03:04,453 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,SelfDestructingSolverStorable14 [2022-09-16 12:03:04,454 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-09-16 12:03:04,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 12:03:04,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1546289100, now seen corresponding path program 2 times [2022-09-16 12:03:04,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 12:03:04,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091769057] [2022-09-16 12:03:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 12:03:04,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 12:03:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 12:03:04,828 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-09-16 12:03:04,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 12:03:04,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091769057] [2022-09-16 12:03:04,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091769057] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 12:03:04,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137982986] [2022-09-16 12:03:04,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 12:03:04,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 12:03:04,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 12:03:04,830 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 12:03:04,831 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 12:03:04,981 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 12:03:04,981 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 12:03:04,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-16 12:03:04,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 12:03:04,989 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 12:03:05,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 12:03:05,180 INFO L356 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-09-16 12:03:05,180 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 23 treesize of output 22 [2022-09-16 12:03:05,236 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 12:03:05,236 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 12:03:05,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 12:03:05,268 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 12:03:05,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-09-16 12:03:05,327 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-09-16 12:03:05,327 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 12:03:05,403 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_492 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_492) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-09-16 12:03:05,424 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_492 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc32#1.base| v_ArrVal_492) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2022-09-16 12:03:11,895 INFO L356 Elim1Store]: treesize reduction 29, result has 46.3 percent of original size [2022-09-16 12:03:11,895 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 29 treesize of output 35 [2022-09-16 12:03:11,907 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 12:03:11,907 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 32 [2022-09-16 12:03:11,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2022-09-16 12:03:12,065 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 14 trivial. 8 not checked. [2022-09-16 12:03:12,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [137982986] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 12:03:12,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 12:03:12,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 42 [2022-09-16 12:03:12,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112380318] [2022-09-16 12:03:12,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 12:03:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-09-16 12:03:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 12:03:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-09-16 12:03:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=1452, Unknown=26, NotChecked=158, Total=1806 [2022-09-16 12:03:12,071 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 390 [2022-09-16 12:03:12,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 596 places, 582 transitions, 3308 flow. Second operand has 43 states, 43 states have (on average 229.02325581395348) internal successors, (9848), 43 states have internal predecessors, (9848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 12:03:12,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 12:03:12,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 390 [2022-09-16 12:03:12,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand