/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-bad-buffer-mult-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:51:43,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:51:43,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:51:43,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:51:43,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:51:43,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:51:43,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:51:43,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:51:43,671 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:51:43,672 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:51:43,673 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:51:43,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:51:43,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:51:43,675 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:51:43,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:51:43,677 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:51:43,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:51:43,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:51:43,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:51:43,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:51:43,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:51:43,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:51:43,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:51:43,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:51:43,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:51:43,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:51:43,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:51:43,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:51:43,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:51:43,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:51:43,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:51:43,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:51:43,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:51:43,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:51:43,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:51:43,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:51:43,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:51:43,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:51:43,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:51:43,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:51:43,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:51:43,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:51:43,715 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:51:43,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:51:43,716 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:51:43,716 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:51:43,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:51:43,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:51:43,717 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:51:43,717 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:51:43,717 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:51:43,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:51:43,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:51:43,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:51:43,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:51:43,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:51:43,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:51:43,718 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:51:43,718 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:51:43,718 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:51:43,718 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:51:43,718 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:51:43,719 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:51:43,719 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:51:43,719 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:51:43,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:51:43,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:51:43,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:51:43,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:51:43,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:51:43,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:51:43,720 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:51:43,720 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:51:43,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:51:43,938 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:51:43,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:51:43,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:51:43,965 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:51:43,967 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:51:43,968 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2022-09-16 11:51:44,022 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85e620cc5/0649558c4072424e96f50f2f514f2dd1/FLAGd49a5ef45 [2022-09-16 11:51:44,421 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:51:44,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2022-09-16 11:51:44,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85e620cc5/0649558c4072424e96f50f2f514f2dd1/FLAGd49a5ef45 [2022-09-16 11:51:44,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/85e620cc5/0649558c4072424e96f50f2f514f2dd1 [2022-09-16 11:51:44,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:51:44,444 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:51:44,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:51:44,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:51:44,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:51:44,449 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f3c9ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44, skipping insertion in model container [2022-09-16 11:51:44,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:51:44,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:51:44,733 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-bad-buffer-mult-alt.wvr.c[4293,4306] [2022-09-16 11:51:44,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:51:44,757 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:51:44,798 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-bad-buffer-mult-alt.wvr.c[4293,4306] [2022-09-16 11:51:44,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:51:44,837 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:51:44,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44 WrapperNode [2022-09-16 11:51:44,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:51:44,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:51:44,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:51:44,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:51:44,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,903 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 365 [2022-09-16 11:51:44,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:51:44,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:51:44,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:51:44,905 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:51:44,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:51:44,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:51:44,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:51:44,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:51:44,949 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44" (1/1) ... [2022-09-16 11:51:44,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:51:44,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:51:44,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:51:44,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:51:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:51:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:51:45,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:51:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:51:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:51:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:51:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:51:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:51:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:51:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:51:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:51:45,015 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:51:45,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:51:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:51:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:51:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:51:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:51:45,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:51:45,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:51:45,018 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:51:45,174 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:51:45,183 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:51:45,625 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:51:46,024 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:51:46,024 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-16 11:51:46,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:51:46 BoogieIcfgContainer [2022-09-16 11:51:46,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:51:46,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:51:46,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:51:46,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:51:46,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:51:44" (1/3) ... [2022-09-16 11:51:46,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3a324e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:51:46, skipping insertion in model container [2022-09-16 11:51:46,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:51:44" (2/3) ... [2022-09-16 11:51:46,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3a324e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:51:46, skipping insertion in model container [2022-09-16 11:51:46,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:51:46" (3/3) ... [2022-09-16 11:51:46,037 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2022-09-16 11:51:46,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:51:46,056 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-09-16 11:51:46,056 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:51:46,234 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:51:46,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 280 transitions, 592 flow [2022-09-16 11:51:46,419 INFO L130 PetriNetUnfolder]: 19/276 cut-off events. [2022-09-16 11:51:46,419 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-16 11:51:46,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293 conditions, 276 events. 19/276 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 289 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 230. Up to 2 conditions per place. [2022-09-16 11:51:46,427 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 280 transitions, 592 flow [2022-09-16 11:51:46,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 248 places, 253 transitions, 527 flow [2022-09-16 11:51:46,461 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:51:46,471 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;@592bfba1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:51:46,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-09-16 11:51:46,491 INFO L130 PetriNetUnfolder]: 3/95 cut-off events. [2022-09-16 11:51:46,492 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:51:46,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:46,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:46,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:51:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:46,500 INFO L85 PathProgramCache]: Analyzing trace with hash 7201232, now seen corresponding path program 1 times [2022-09-16 11:51:46,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:46,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128096838] [2022-09-16 11:51:46,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:46,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:46,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:46,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:46,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:46,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128096838] [2022-09-16 11:51:46,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128096838] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:51:46,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:51:46,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:51:46,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085147352] [2022-09-16 11:51:46,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:51:46,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:51:46,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:46,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:51:46,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:51:46,915 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 280 [2022-09-16 11:51:46,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 253 transitions, 527 flow. Second operand has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:46,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:46,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 280 [2022-09-16 11:51:46,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:51:54,719 INFO L130 PetriNetUnfolder]: 26913/38763 cut-off events. [2022-09-16 11:51:54,719 INFO L131 PetriNetUnfolder]: For 6162/6166 co-relation queries the response was YES. [2022-09-16 11:51:54,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75448 conditions, 38763 events. 26913/38763 cut-off events. For 6162/6166 co-relation queries the response was YES. Maximal size of possible extension queue 2230. Compared 266397 event pairs, 15506 based on Foata normal form. 6016/20443 useless extension candidates. Maximal degree in co-relation 36997. Up to 16667 conditions per place. [2022-09-16 11:51:55,161 INFO L137 encePairwiseOnDemand]: 247/280 looper letters, 94 selfloop transitions, 9 changer transitions 6/281 dead transitions. [2022-09-16 11:51:55,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 281 transitions, 810 flow [2022-09-16 11:51:55,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:51:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:51:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1153 transitions. [2022-09-16 11:51:55,184 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8235714285714286 [2022-09-16 11:51:55,185 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1153 transitions. [2022-09-16 11:51:55,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1153 transitions. [2022-09-16 11:51:55,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:51:55,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1153 transitions. [2022-09-16 11:51:55,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 230.6) internal successors, (1153), 5 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:55,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:55,208 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:55,211 INFO L175 Difference]: Start difference. First operand has 248 places, 253 transitions, 527 flow. Second operand 5 states and 1153 transitions. [2022-09-16 11:51:55,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 281 transitions, 810 flow [2022-09-16 11:51:55,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 281 transitions, 784 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:51:55,225 INFO L231 Difference]: Finished difference. Result has 240 places, 234 transitions, 529 flow [2022-09-16 11:51:55,227 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=529, PETRI_PLACES=240, PETRI_TRANSITIONS=234} [2022-09-16 11:51:55,231 INFO L287 CegarLoopForPetriNet]: 248 programPoint places, -8 predicate places. [2022-09-16 11:51:55,231 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 234 transitions, 529 flow [2022-09-16 11:51:55,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:55,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:51:55,233 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:51:55,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:51:55,233 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:51:55,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:51:55,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1702232982, now seen corresponding path program 1 times [2022-09-16 11:51:55,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:51:55,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216118251] [2022-09-16 11:51:55,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:55,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:51:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:55,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:55,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:51:55,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216118251] [2022-09-16 11:51:55,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216118251] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:51:55,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934372229] [2022-09-16 11:51:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:51:55,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:51:55,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:51:55,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:51:55,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:51:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:51:55,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:51:55,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:51:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:55,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:51:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:51:55,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934372229] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:51:55,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:51:55,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:51:55,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711667930] [2022-09-16 11:51:55,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:51:55,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:51:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:51:55,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:51:55,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:51:55,770 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 280 [2022-09-16 11:51:55,773 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 234 transitions, 529 flow. Second operand has 12 states, 12 states have (on average 204.66666666666666) internal successors, (2456), 12 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:51:55,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:51:55,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 280 [2022-09-16 11:51:55,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:11,067 INFO L130 PetriNetUnfolder]: 67281/96743 cut-off events. [2022-09-16 11:52:11,067 INFO L131 PetriNetUnfolder]: For 4507/4517 co-relation queries the response was YES. [2022-09-16 11:52:11,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183737 conditions, 96743 events. 67281/96743 cut-off events. For 4507/4517 co-relation queries the response was YES. Maximal size of possible extension queue 2429. Compared 694003 event pairs, 38765 based on Foata normal form. 6/35939 useless extension candidates. Maximal degree in co-relation 146764. Up to 16660 conditions per place. [2022-09-16 11:52:12,135 INFO L137 encePairwiseOnDemand]: 265/280 looper letters, 211 selfloop transitions, 40 changer transitions 0/423 dead transitions. [2022-09-16 11:52:12,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 423 transitions, 1491 flow [2022-09-16 11:52:12,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:52:12,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:52:12,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3893 transitions. [2022-09-16 11:52:12,144 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.772420634920635 [2022-09-16 11:52:12,144 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3893 transitions. [2022-09-16 11:52:12,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3893 transitions. [2022-09-16 11:52:12,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:12,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3893 transitions. [2022-09-16 11:52:12,154 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 216.27777777777777) internal successors, (3893), 18 states have internal predecessors, (3893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:12,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 280.0) internal successors, (5320), 19 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:12,167 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 280.0) internal successors, (5320), 19 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:12,167 INFO L175 Difference]: Start difference. First operand has 240 places, 234 transitions, 529 flow. Second operand 18 states and 3893 transitions. [2022-09-16 11:52:12,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 423 transitions, 1491 flow [2022-09-16 11:52:12,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 423 transitions, 1486 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:52:12,180 INFO L231 Difference]: Finished difference. Result has 254 places, 261 transitions, 762 flow [2022-09-16 11:52:12,181 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=524, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=762, PETRI_PLACES=254, PETRI_TRANSITIONS=261} [2022-09-16 11:52:12,182 INFO L287 CegarLoopForPetriNet]: 248 programPoint places, 6 predicate places. [2022-09-16 11:52:12,182 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 261 transitions, 762 flow [2022-09-16 11:52:12,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 204.66666666666666) internal successors, (2456), 12 states have internal predecessors, (2456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:12,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:12,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:12,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:52:12,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:12,400 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:52:12,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:12,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1229613867, now seen corresponding path program 1 times [2022-09-16 11:52:12,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:12,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85673621] [2022-09-16 11:52:12,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:12,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:12,521 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:12,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:12,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85673621] [2022-09-16 11:52:12,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85673621] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:52:12,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592641231] [2022-09-16 11:52:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:12,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:12,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:52:12,524 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:52:12,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:52:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:12,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:52:12,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:52:12,731 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:12,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:52:12,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592641231] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:12,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:52:12,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:52:12,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327320619] [2022-09-16 11:52:12,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:12,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:52:12,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:12,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:52:12,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:52:12,740 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 280 [2022-09-16 11:52:12,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 261 transitions, 762 flow. Second operand has 6 states, 6 states have (on average 204.33333333333334) internal successors, (1226), 6 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:12,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:12,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 280 [2022-09-16 11:52:12,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:27,665 INFO L130 PetriNetUnfolder]: 67281/96735 cut-off events. [2022-09-16 11:52:27,666 INFO L131 PetriNetUnfolder]: For 4601/4611 co-relation queries the response was YES. [2022-09-16 11:52:28,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183774 conditions, 96735 events. 67281/96735 cut-off events. For 4601/4611 co-relation queries the response was YES. Maximal size of possible extension queue 2428. Compared 690392 event pairs, 38765 based on Foata normal form. 8/35933 useless extension candidates. Maximal degree in co-relation 146994. Up to 66596 conditions per place. [2022-09-16 11:52:28,557 INFO L137 encePairwiseOnDemand]: 269/280 looper letters, 95 selfloop transitions, 27 changer transitions 0/294 dead transitions. [2022-09-16 11:52:28,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 294 transitions, 1046 flow [2022-09-16 11:52:28,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:52:28,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:52:28,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1517 transitions. [2022-09-16 11:52:28,562 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7739795918367347 [2022-09-16 11:52:28,562 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1517 transitions. [2022-09-16 11:52:28,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1517 transitions. [2022-09-16 11:52:28,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:28,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1517 transitions. [2022-09-16 11:52:28,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 216.71428571428572) internal successors, (1517), 7 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:28,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 280.0) internal successors, (2240), 8 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:28,570 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 280.0) internal successors, (2240), 8 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:28,570 INFO L175 Difference]: Start difference. First operand has 254 places, 261 transitions, 762 flow. Second operand 7 states and 1517 transitions. [2022-09-16 11:52:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 294 transitions, 1046 flow [2022-09-16 11:52:28,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 294 transitions, 972 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-09-16 11:52:28,582 INFO L231 Difference]: Finished difference. Result has 249 places, 253 transitions, 688 flow [2022-09-16 11:52:28,582 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=688, PETRI_PLACES=249, PETRI_TRANSITIONS=253} [2022-09-16 11:52:28,584 INFO L287 CegarLoopForPetriNet]: 248 programPoint places, 1 predicate places. [2022-09-16 11:52:28,584 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 253 transitions, 688 flow [2022-09-16 11:52:28,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.33333333333334) internal successors, (1226), 6 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:28,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:28,587 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:52:28,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:52:28,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:52:28,816 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:52:28,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:28,816 INFO L85 PathProgramCache]: Analyzing trace with hash -402412464, now seen corresponding path program 2 times [2022-09-16 11:52:28,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:28,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628484195] [2022-09-16 11:52:28,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:28,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:28,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:28,978 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:28,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:28,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628484195] [2022-09-16 11:52:28,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628484195] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:52:28,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645350930] [2022-09-16 11:52:28,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:52:28,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:28,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:52:28,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:52:28,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:52:29,116 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:52:29,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:52:29,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:52:29,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:52:29,273 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:52:29,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:52:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:52:29,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645350930] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:52:29,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:52:29,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:52:29,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765179630] [2022-09-16 11:52:29,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:52:29,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:52:29,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:29,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:52:29,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:52:29,423 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 280 [2022-09-16 11:52:29,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 253 transitions, 688 flow. Second operand has 18 states, 18 states have (on average 190.61111111111111) internal successors, (3431), 18 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:29,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:29,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 280 [2022-09-16 11:52:29,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:52:44,946 INFO L130 PetriNetUnfolder]: 66907/99207 cut-off events. [2022-09-16 11:52:44,947 INFO L131 PetriNetUnfolder]: For 5530/5537 co-relation queries the response was YES. [2022-09-16 11:52:45,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186470 conditions, 99207 events. 66907/99207 cut-off events. For 5530/5537 co-relation queries the response was YES. Maximal size of possible extension queue 1798. Compared 730500 event pairs, 39109 based on Foata normal form. 4/41153 useless extension candidates. Maximal degree in co-relation 159510. Up to 11923 conditions per place. [2022-09-16 11:52:45,950 INFO L137 encePairwiseOnDemand]: 258/280 looper letters, 275 selfloop transitions, 65 changer transitions 0/497 dead transitions. [2022-09-16 11:52:45,950 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 497 transitions, 1963 flow [2022-09-16 11:52:45,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:52:45,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:52:45,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 9521 transitions. [2022-09-16 11:52:45,969 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6939504373177843 [2022-09-16 11:52:45,969 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 9521 transitions. [2022-09-16 11:52:45,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 9521 transitions. [2022-09-16 11:52:45,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:52:45,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 9521 transitions. [2022-09-16 11:52:45,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 194.30612244897958) internal successors, (9521), 49 states have internal predecessors, (9521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:46,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 280.0) internal successors, (14000), 50 states have internal predecessors, (14000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:46,024 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 280.0) internal successors, (14000), 50 states have internal predecessors, (14000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:46,024 INFO L175 Difference]: Start difference. First operand has 249 places, 253 transitions, 688 flow. Second operand 49 states and 9521 transitions. [2022-09-16 11:52:46,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 497 transitions, 1963 flow [2022-09-16 11:52:46,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 497 transitions, 1920 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:52:46,032 INFO L231 Difference]: Finished difference. Result has 293 places, 276 transitions, 899 flow [2022-09-16 11:52:46,033 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=640, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=899, PETRI_PLACES=293, PETRI_TRANSITIONS=276} [2022-09-16 11:52:46,034 INFO L287 CegarLoopForPetriNet]: 248 programPoint places, 45 predicate places. [2022-09-16 11:52:46,034 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 276 transitions, 899 flow [2022-09-16 11:52:46,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 190.61111111111111) internal successors, (3431), 18 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:46,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:52:46,036 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 11:52:46,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:52:46,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:52:46,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-09-16 11:52:46,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:52:46,251 INFO L85 PathProgramCache]: Analyzing trace with hash 229201863, now seen corresponding path program 1 times [2022-09-16 11:52:46,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:52:46,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683395064] [2022-09-16 11:52:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:52:46,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:52:46,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:52:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:52:46,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:52:46,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683395064] [2022-09-16 11:52:46,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683395064] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:52:46,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:52:46,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:52:46,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772793621] [2022-09-16 11:52:46,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:52:46,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:52:46,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:52:46,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:52:46,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:52:46,337 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 280 [2022-09-16 11:52:46,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 276 transitions, 899 flow. Second operand has 3 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:52:46,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:52:46,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 280 [2022-09-16 11:52:46,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand