/usr/bin/java -Xmx16000000000 -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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 14:27:19,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 14:27:19,546 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 14:27:19,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 14:27:19,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 14:27:19,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 14:27:19,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 14:27:19,590 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 14:27:19,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 14:27:19,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 14:27:19,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 14:27:19,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 14:27:19,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 14:27:19,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 14:27:19,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 14:27:19,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 14:27:19,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 14:27:19,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 14:27:19,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 14:27:19,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 14:27:19,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 14:27:19,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 14:27:19,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 14:27:19,609 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 14:27:19,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 14:27:19,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 14:27:19,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 14:27:19,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 14:27:19,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 14:27:19,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 14:27:19,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 14:27:19,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 14:27:19,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 14:27:19,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 14:27:19,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 14:27:19,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 14:27:19,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 14:27:19,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 14:27:19,619 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 14:27:19,620 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 14:27:19,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 14:27:19,621 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-After.epf [2022-01-19 14:27:19,646 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 14:27:19,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 14:27:19,647 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 14:27:19,647 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 14:27:19,648 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 14:27:19,648 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 14:27:19,648 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 14:27:19,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 14:27:19,648 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 14:27:19,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 14:27:19,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 14:27:19,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 14:27:19,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 14:27:19,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 14:27:19,649 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 14:27:19,649 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 14:27:19,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 14:27:19,649 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 14:27:19,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 14:27:19,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 14:27:19,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 14:27:19,650 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 14:27:19,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 14:27:19,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 14:27:19,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 14:27:19,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 14:27:19,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 14:27:19,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 14:27:19,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 14:27:19,650 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 14:27:19,650 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 14:27:19,651 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 14:27:19,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 14:27:19,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 14:27:19,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 14:27:19,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 14:27:19,881 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 14:27:19,882 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 14:27:19,882 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2022-01-19 14:27:19,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1adced08/11cb4ff74e0943df9321d5c2c7fd5634/FLAG14124e497 [2022-01-19 14:27:20,256 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 14:27:20,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c [2022-01-19 14:27:20,261 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1adced08/11cb4ff74e0943df9321d5c2c7fd5634/FLAG14124e497 [2022-01-19 14:27:20,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1adced08/11cb4ff74e0943df9321d5c2c7fd5634 [2022-01-19 14:27:20,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 14:27:20,667 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 14:27:20,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 14:27:20,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 14:27:20,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 14:27:20,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,682 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d90a25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20, skipping insertion in model container [2022-01-19 14:27:20,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 14:27:20,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 14:27:20,821 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-more-min-array-hom.wvr.c[2586,2599] [2022-01-19 14:27:20,828 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 14:27:20,832 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 14:27:20,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array-hom.wvr.c[2586,2599] [2022-01-19 14:27:20,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 14:27:20,857 INFO L208 MainTranslator]: Completed translation [2022-01-19 14:27:20,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20 WrapperNode [2022-01-19 14:27:20,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 14:27:20,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 14:27:20,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 14:27:20,858 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 14:27:20,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,869 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,882 INFO L137 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 106 [2022-01-19 14:27:20,882 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 14:27:20,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 14:27:20,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 14:27:20,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 14:27:20,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,908 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 14:27:20,908 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 14:27:20,908 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 14:27:20,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 14:27:20,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20" (1/1) ... [2022-01-19 14:27:20,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 14:27:20,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:27:20,938 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) [2022-01-19 14:27:20,943 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 [2022-01-19 14:27:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 14:27:20,968 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 14:27:20,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 14:27:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 14:27:20,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 14:27:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 14:27:20,969 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 14:27:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 14:27:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 14:27:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 14:27:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 14:27:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 14:27:20,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 14:27:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 14:27:20,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 14:27:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 14:27:20,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 14:27:20,971 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 14:27:21,037 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 14:27:21,038 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 14:27:21,279 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 14:27:21,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 14:27:21,316 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-19 14:27:21,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:27:21 BoogieIcfgContainer [2022-01-19 14:27:21,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 14:27:21,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 14:27:21,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 14:27:21,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 14:27:21,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:27:20" (1/3) ... [2022-01-19 14:27:21,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6486517e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:27:21, skipping insertion in model container [2022-01-19 14:27:21,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:27:20" (2/3) ... [2022-01-19 14:27:21,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6486517e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:27:21, skipping insertion in model container [2022-01-19 14:27:21,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:27:21" (3/3) ... [2022-01-19 14:27:21,327 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array-hom.wvr.c [2022-01-19 14:27:21,333 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 14:27:21,333 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 14:27:21,333 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 14:27:21,360 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,361 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,361 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,361 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,361 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,361 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,362 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,362 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,363 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,363 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,364 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,364 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,364 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,364 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,364 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,365 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,365 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,365 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,365 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,365 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,366 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,366 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,366 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,366 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,367 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,367 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,368 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,368 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,368 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,368 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,368 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,369 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,369 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,369 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,369 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,370 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,370 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,370 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,370 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,370 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,370 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,370 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,371 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,371 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,371 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,371 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,371 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,371 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,371 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,371 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,372 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,372 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,372 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,372 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,372 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,372 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,372 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,373 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,373 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,373 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,375 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,375 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,376 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,376 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,377 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,377 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,377 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,377 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,377 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,377 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,378 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,378 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:27:21,381 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 14:27:21,420 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 14:27:21,426 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 14:27:21,426 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 14:27:21,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 156 places, 159 transitions, 342 flow [2022-01-19 14:27:21,493 INFO L129 PetriNetUnfolder]: 13/156 cut-off events. [2022-01-19 14:27:21,493 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 14:27:21,497 INFO L84 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 156 events. 13/156 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 96 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2022-01-19 14:27:21,497 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 159 transitions, 342 flow [2022-01-19 14:27:21,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 145 transitions, 308 flow [2022-01-19 14:27:21,538 INFO L129 PetriNetUnfolder]: 13/144 cut-off events. [2022-01-19 14:27:21,538 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 14:27:21,538 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:27:21,539 INFO L254 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] [2022-01-19 14:27:21,539 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:27:21,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:27:21,543 INFO L85 PathProgramCache]: Analyzing trace with hash -363023648, now seen corresponding path program 1 times [2022-01-19 14:27:21,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:27:21,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348781715] [2022-01-19 14:27:21,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:27:21,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:27:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:27:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:27:21,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:27:21,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348781715] [2022-01-19 14:27:21,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348781715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:27:21,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:27:21,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 14:27:21,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658498195] [2022-01-19 14:27:21,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:27:21,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 14:27:21,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:27:21,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 14:27:21,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 14:27:21,858 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 159 [2022-01-19 14:27:21,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 145 transitions, 308 flow. Second operand has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:21,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:27:21,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 159 [2022-01-19 14:27:21,865 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:27:21,936 INFO L129 PetriNetUnfolder]: 42/270 cut-off events. [2022-01-19 14:27:21,936 INFO L130 PetriNetUnfolder]: For 50/51 co-relation queries the response was YES. [2022-01-19 14:27:21,938 INFO L84 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 270 events. 42/270 cut-off events. For 50/51 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 719 event pairs, 15 based on Foata normal form. 42/281 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2022-01-19 14:27:21,940 INFO L132 encePairwiseOnDemand]: 151/159 looper letters, 9 selfloop transitions, 0 changer transitions 4/137 dead transitions. [2022-01-19 14:27:21,940 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 137 transitions, 310 flow [2022-01-19 14:27:21,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 14:27:21,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 14:27:21,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 299 transitions. [2022-01-19 14:27:21,955 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.940251572327044 [2022-01-19 14:27:21,955 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 299 transitions. [2022-01-19 14:27:21,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 299 transitions. [2022-01-19 14:27:21,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:27:21,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 299 transitions. [2022-01-19 14:27:21,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 149.5) internal successors, (299), 2 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:21,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:21,975 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:21,977 INFO L186 Difference]: Start difference. First operand has 142 places, 145 transitions, 308 flow. Second operand 2 states and 299 transitions. [2022-01-19 14:27:21,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 137 transitions, 310 flow [2022-01-19 14:27:21,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 298 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 14:27:21,983 INFO L242 Difference]: Finished difference. Result has 137 places, 133 transitions, 272 flow [2022-01-19 14:27:21,985 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=272, PETRI_PLACES=137, PETRI_TRANSITIONS=133} [2022-01-19 14:27:21,991 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, -5 predicate places. [2022-01-19 14:27:21,991 INFO L470 AbstractCegarLoop]: Abstraction has has 137 places, 133 transitions, 272 flow [2022-01-19 14:27:21,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 145.5) internal successors, (291), 2 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:21,991 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:27:21,992 INFO L254 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] [2022-01-19 14:27:21,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 14:27:21,993 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:27:21,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:27:21,993 INFO L85 PathProgramCache]: Analyzing trace with hash 811959335, now seen corresponding path program 1 times [2022-01-19 14:27:21,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:27:21,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355888824] [2022-01-19 14:27:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:27:21,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:27:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:27:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:27:22,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:27:22,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355888824] [2022-01-19 14:27:22,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355888824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:27:22,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:27:22,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 14:27:22,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745965252] [2022-01-19 14:27:22,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:27:22,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 14:27:22,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:27:22,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 14:27:22,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-19 14:27:22,211 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 159 [2022-01-19 14:27:22,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 133 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:22,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:27:22,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 159 [2022-01-19 14:27:22,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:27:22,371 INFO L129 PetriNetUnfolder]: 396/824 cut-off events. [2022-01-19 14:27:22,371 INFO L130 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-01-19 14:27:22,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1429 conditions, 824 events. 396/824 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3520 event pairs, 109 based on Foata normal form. 0/634 useless extension candidates. Maximal degree in co-relation 1426. Up to 305 conditions per place. [2022-01-19 14:27:22,379 INFO L132 encePairwiseOnDemand]: 152/159 looper letters, 42 selfloop transitions, 6 changer transitions 0/142 dead transitions. [2022-01-19 14:27:22,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 142 transitions, 388 flow [2022-01-19 14:27:22,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 14:27:22,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 14:27:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 691 transitions. [2022-01-19 14:27:22,383 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7243186582809225 [2022-01-19 14:27:22,383 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 691 transitions. [2022-01-19 14:27:22,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 691 transitions. [2022-01-19 14:27:22,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:27:22,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 691 transitions. [2022-01-19 14:27:22,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 115.16666666666667) internal successors, (691), 6 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:22,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:22,389 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 159.0) internal successors, (1113), 7 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:22,390 INFO L186 Difference]: Start difference. First operand has 137 places, 133 transitions, 272 flow. Second operand 6 states and 691 transitions. [2022-01-19 14:27:22,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 142 transitions, 388 flow [2022-01-19 14:27:22,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 142 transitions, 388 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 14:27:22,395 INFO L242 Difference]: Finished difference. Result has 140 places, 134 transitions, 297 flow [2022-01-19 14:27:22,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=297, PETRI_PLACES=140, PETRI_TRANSITIONS=134} [2022-01-19 14:27:22,396 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, -2 predicate places. [2022-01-19 14:27:22,397 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 134 transitions, 297 flow [2022-01-19 14:27:22,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:22,399 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:27:22,403 INFO L254 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] [2022-01-19 14:27:22,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 14:27:22,403 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:27:22,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:27:22,404 INFO L85 PathProgramCache]: Analyzing trace with hash -533935902, now seen corresponding path program 1 times [2022-01-19 14:27:22,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:27:22,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479396461] [2022-01-19 14:27:22,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:27:22,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:27:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:27:22,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:27:22,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:27:22,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479396461] [2022-01-19 14:27:22,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479396461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:27:22,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:27:22,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-19 14:27:22,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015087891] [2022-01-19 14:27:22,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:27:22,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:27:22,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:27:22,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:27:22,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-19 14:27:22,694 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 159 [2022-01-19 14:27:22,695 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 134 transitions, 297 flow. Second operand has 9 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:22,695 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:27:22,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 159 [2022-01-19 14:27:22,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:27:22,909 INFO L129 PetriNetUnfolder]: 396/805 cut-off events. [2022-01-19 14:27:22,909 INFO L130 PetriNetUnfolder]: For 204/204 co-relation queries the response was YES. [2022-01-19 14:27:22,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 805 events. 396/805 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3353 event pairs, 199 based on Foata normal form. 1/627 useless extension candidates. Maximal degree in co-relation 1597. Up to 508 conditions per place. [2022-01-19 14:27:22,915 INFO L132 encePairwiseOnDemand]: 148/159 looper letters, 54 selfloop transitions, 7 changer transitions 4/150 dead transitions. [2022-01-19 14:27:22,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 150 transitions, 465 flow [2022-01-19 14:27:22,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 14:27:22,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 14:27:22,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 947 transitions. [2022-01-19 14:27:22,917 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6617749825296995 [2022-01-19 14:27:22,917 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 947 transitions. [2022-01-19 14:27:22,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 947 transitions. [2022-01-19 14:27:22,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:27:22,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 947 transitions. [2022-01-19 14:27:22,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.22222222222223) internal successors, (947), 9 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:22,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:22,922 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 159.0) internal successors, (1590), 10 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:22,922 INFO L186 Difference]: Start difference. First operand has 140 places, 134 transitions, 297 flow. Second operand 9 states and 947 transitions. [2022-01-19 14:27:22,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 150 transitions, 465 flow [2022-01-19 14:27:22,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 150 transitions, 453 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 14:27:22,926 INFO L242 Difference]: Finished difference. Result has 148 places, 135 transitions, 319 flow [2022-01-19 14:27:22,926 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=319, PETRI_PLACES=148, PETRI_TRANSITIONS=135} [2022-01-19 14:27:22,927 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 6 predicate places. [2022-01-19 14:27:22,927 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 135 transitions, 319 flow [2022-01-19 14:27:22,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 102.44444444444444) internal successors, (922), 9 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:22,927 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:27:22,928 INFO L254 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] [2022-01-19 14:27:22,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 14:27:22,928 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:27:22,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:27:22,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1305271965, now seen corresponding path program 1 times [2022-01-19 14:27:22,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:27:22,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905227237] [2022-01-19 14:27:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:27:22,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:27:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:27:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:27:23,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:27:23,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905227237] [2022-01-19 14:27:23,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905227237] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:27:23,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276021558] [2022-01-19 14:27:23,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:27:23,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:27:23,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:27:23,011 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) [2022-01-19 14:27:23,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 14:27:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:27:23,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-19 14:27:23,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:27:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:27:23,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:27:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:27:23,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276021558] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 14:27:23,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 14:27:23,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-01-19 14:27:23,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086228219] [2022-01-19 14:27:23,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:27:23,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 14:27:23,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:27:23,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 14:27:23,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-01-19 14:27:23,634 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 159 [2022-01-19 14:27:23,635 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 135 transitions, 319 flow. Second operand has 7 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:23,635 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:27:23,636 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 159 [2022-01-19 14:27:23,636 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:27:23,788 INFO L129 PetriNetUnfolder]: 171/592 cut-off events. [2022-01-19 14:27:23,788 INFO L130 PetriNetUnfolder]: For 145/167 co-relation queries the response was YES. [2022-01-19 14:27:23,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 592 events. 171/592 cut-off events. For 145/167 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2821 event pairs, 80 based on Foata normal form. 22/563 useless extension candidates. Maximal degree in co-relation 1011. Up to 135 conditions per place. [2022-01-19 14:27:23,792 INFO L132 encePairwiseOnDemand]: 151/159 looper letters, 35 selfloop transitions, 7 changer transitions 0/144 dead transitions. [2022-01-19 14:27:23,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 144 transitions, 432 flow [2022-01-19 14:27:23,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 14:27:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 14:27:23,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 873 transitions. [2022-01-19 14:27:23,794 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.784366576819407 [2022-01-19 14:27:23,794 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 873 transitions. [2022-01-19 14:27:23,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 873 transitions. [2022-01-19 14:27:23,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:27:23,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 873 transitions. [2022-01-19 14:27:23,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 124.71428571428571) internal successors, (873), 7 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:23,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:23,797 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 159.0) internal successors, (1272), 8 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:23,798 INFO L186 Difference]: Start difference. First operand has 148 places, 135 transitions, 319 flow. Second operand 7 states and 873 transitions. [2022-01-19 14:27:23,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 144 transitions, 432 flow [2022-01-19 14:27:23,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 144 transitions, 412 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-01-19 14:27:23,801 INFO L242 Difference]: Finished difference. Result has 148 places, 137 transitions, 333 flow [2022-01-19 14:27:23,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=148, PETRI_TRANSITIONS=137} [2022-01-19 14:27:23,802 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 6 predicate places. [2022-01-19 14:27:23,802 INFO L470 AbstractCegarLoop]: Abstraction has has 148 places, 137 transitions, 333 flow [2022-01-19 14:27:23,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:23,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:27:23,803 INFO L254 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] [2022-01-19 14:27:23,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 14:27:24,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:27:24,019 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:27:24,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:27:24,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1256240202, now seen corresponding path program 1 times [2022-01-19 14:27:24,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:27:24,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91812701] [2022-01-19 14:27:24,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:27:24,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:27:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:27:24,917 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:27:24,917 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:27:24,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91812701] [2022-01-19 14:27:24,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91812701] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:27:24,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428484240] [2022-01-19 14:27:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:27:24,918 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:27:24,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:27:24,919 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) [2022-01-19 14:27:24,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 14:27:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:27:24,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-19 14:27:25,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:27:25,083 INFO L387 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 [2022-01-19 14:27:25,322 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 14:27:25,322 INFO L387 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 [2022-01-19 14:27:26,500 INFO L387 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 35 treesize of output 33 [2022-01-19 14:27:27,002 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-19 14:27:27,004 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:27:27,004 INFO L387 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 63 treesize of output 36 [2022-01-19 14:27:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:27:27,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:27:27,756 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:27:27,756 INFO L387 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 143 treesize of output 111 [2022-01-19 14:27:27,761 INFO L387 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 72 treesize of output 60 [2022-01-19 14:27:27,765 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 54 [2022-01-19 14:27:29,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 14:27:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:27:29,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428484240] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:27:29,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:27:29,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 28, 28] total 72 [2022-01-19 14:27:29,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606722323] [2022-01-19 14:27:29,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:27:29,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-19 14:27:29,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:27:29,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-19 14:27:29,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=4456, Unknown=5, NotChecked=0, Total=5112 [2022-01-19 14:27:29,745 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 159 [2022-01-19 14:27:29,748 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 137 transitions, 333 flow. Second operand has 72 states, 72 states have (on average 57.90277777777778) internal successors, (4169), 72 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:29,748 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:27:29,748 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 159 [2022-01-19 14:27:29,749 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:27:39,414 INFO L129 PetriNetUnfolder]: 9336/15267 cut-off events. [2022-01-19 14:27:39,414 INFO L130 PetriNetUnfolder]: For 6485/6485 co-relation queries the response was YES. [2022-01-19 14:27:39,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35490 conditions, 15267 events. 9336/15267 cut-off events. For 6485/6485 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 113075 event pairs, 1258 based on Foata normal form. 4/14440 useless extension candidates. Maximal degree in co-relation 35480. Up to 3519 conditions per place. [2022-01-19 14:27:39,510 INFO L132 encePairwiseOnDemand]: 113/159 looper letters, 651 selfloop transitions, 248 changer transitions 21/966 dead transitions. [2022-01-19 14:27:39,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 966 transitions, 4614 flow [2022-01-19 14:27:39,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-19 14:27:39,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2022-01-19 14:27:39,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 7645 transitions. [2022-01-19 14:27:39,528 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.39411279513351893 [2022-01-19 14:27:39,529 INFO L72 ComplementDD]: Start complementDD. Operand 122 states and 7645 transitions. [2022-01-19 14:27:39,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 122 states and 7645 transitions. [2022-01-19 14:27:39,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:27:39,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 122 states and 7645 transitions. [2022-01-19 14:27:39,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 123 states, 122 states have (on average 62.66393442622951) internal successors, (7645), 122 states have internal predecessors, (7645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:39,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 123 states, 123 states have (on average 159.0) internal successors, (19557), 123 states have internal predecessors, (19557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:39,581 INFO L81 ComplementDD]: Finished complementDD. Result has 123 states, 123 states have (on average 159.0) internal successors, (19557), 123 states have internal predecessors, (19557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:39,581 INFO L186 Difference]: Start difference. First operand has 148 places, 137 transitions, 333 flow. Second operand 122 states and 7645 transitions. [2022-01-19 14:27:39,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 966 transitions, 4614 flow [2022-01-19 14:27:39,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 966 transitions, 4535 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 14:27:39,613 INFO L242 Difference]: Finished difference. Result has 337 places, 417 transitions, 2272 flow [2022-01-19 14:27:39,614 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=122, PETRI_FLOW=2272, PETRI_PLACES=337, PETRI_TRANSITIONS=417} [2022-01-19 14:27:39,616 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 195 predicate places. [2022-01-19 14:27:39,616 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 417 transitions, 2272 flow [2022-01-19 14:27:39,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 57.90277777777778) internal successors, (4169), 72 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:39,618 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:27:39,618 INFO L254 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] [2022-01-19 14:27:39,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 14:27:39,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:27:39,832 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:27:39,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:27:39,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1497923746, now seen corresponding path program 2 times [2022-01-19 14:27:39,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:27:39,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358509613] [2022-01-19 14:27:39,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:27:39,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:27:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:27:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:27:40,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:27:40,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358509613] [2022-01-19 14:27:40,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358509613] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:27:40,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853507068] [2022-01-19 14:27:40,720 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 14:27:40,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:27:40,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:27:40,721 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) [2022-01-19 14:27:40,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 14:27:40,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 14:27:40,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:27:40,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-19 14:27:40,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:27:41,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 14:27:41,877 INFO L387 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 35 treesize of output 33 [2022-01-19 14:27:42,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 14:27:42,023 INFO L387 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 35 treesize of output 33 [2022-01-19 14:27:42,418 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:27:42,419 INFO L387 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 63 treesize of output 43 [2022-01-19 14:27:43,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:27:43,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:27:44,070 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:27:44,070 INFO L387 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 337 treesize of output 297 [2022-01-19 14:27:44,079 INFO L387 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 258 treesize of output 234 [2022-01-19 14:27:44,084 INFO L387 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 234 treesize of output 222 [2022-01-19 14:27:44,089 INFO L387 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 222 treesize of output 210 [2022-01-19 14:27:44,100 INFO L387 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 210 treesize of output 186 [2022-01-19 14:27:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:27:45,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853507068] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:27:45,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:27:45,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 27, 27] total 72 [2022-01-19 14:27:45,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380857123] [2022-01-19 14:27:45,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:27:45,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-19 14:27:45,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:27:45,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-19 14:27:45,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=873, Invalid=4229, Unknown=10, NotChecked=0, Total=5112 [2022-01-19 14:27:45,643 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 159 [2022-01-19 14:27:45,646 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 417 transitions, 2272 flow. Second operand has 72 states, 72 states have (on average 55.958333333333336) internal successors, (4029), 72 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:27:45,646 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:27:45,646 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 159 [2022-01-19 14:27:45,646 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:28:05,273 INFO L129 PetriNetUnfolder]: 19082/32509 cut-off events. [2022-01-19 14:28:05,274 INFO L130 PetriNetUnfolder]: For 317879/317887 co-relation queries the response was YES. [2022-01-19 14:28:05,757 INFO L84 FinitePrefix]: Finished finitePrefix Result has 141547 conditions, 32509 events. 19082/32509 cut-off events. For 317879/317887 co-relation queries the response was YES. Maximal size of possible extension queue 1769. Compared 285122 event pairs, 1897 based on Foata normal form. 11/32320 useless extension candidates. Maximal degree in co-relation 141466. Up to 6643 conditions per place. [2022-01-19 14:28:06,038 INFO L132 encePairwiseOnDemand]: 114/159 looper letters, 1246 selfloop transitions, 995 changer transitions 23/2309 dead transitions. [2022-01-19 14:28:06,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 2309 transitions, 19881 flow [2022-01-19 14:28:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2022-01-19 14:28:06,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2022-01-19 14:28:06,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 11104 transitions. [2022-01-19 14:28:06,058 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3837169120187988 [2022-01-19 14:28:06,059 INFO L72 ComplementDD]: Start complementDD. Operand 182 states and 11104 transitions. [2022-01-19 14:28:06,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 182 states and 11104 transitions. [2022-01-19 14:28:06,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:28:06,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 182 states and 11104 transitions. [2022-01-19 14:28:06,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 183 states, 182 states have (on average 61.010989010989015) internal successors, (11104), 182 states have internal predecessors, (11104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:28:06,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 183 states, 183 states have (on average 159.0) internal successors, (29097), 183 states have internal predecessors, (29097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:28:06,130 INFO L81 ComplementDD]: Finished complementDD. Result has 183 states, 183 states have (on average 159.0) internal successors, (29097), 183 states have internal predecessors, (29097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:28:06,130 INFO L186 Difference]: Start difference. First operand has 337 places, 417 transitions, 2272 flow. Second operand 182 states and 11104 transitions. [2022-01-19 14:28:06,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 2309 transitions, 19881 flow [2022-01-19 14:28:08,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 2309 transitions, 19697 flow, removed 76 selfloop flow, removed 29 redundant places. [2022-01-19 14:28:08,179 INFO L242 Difference]: Finished difference. Result has 575 places, 1293 transitions, 12643 flow [2022-01-19 14:28:08,180 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=182, PETRI_FLOW=12643, PETRI_PLACES=575, PETRI_TRANSITIONS=1293} [2022-01-19 14:28:08,181 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 433 predicate places. [2022-01-19 14:28:08,182 INFO L470 AbstractCegarLoop]: Abstraction has has 575 places, 1293 transitions, 12643 flow [2022-01-19 14:28:08,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 55.958333333333336) internal successors, (4029), 72 states have internal predecessors, (4029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:28:08,184 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:28:08,184 INFO L254 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] [2022-01-19 14:28:08,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-19 14:28:08,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:28:08,395 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:28:08,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:28:08,396 INFO L85 PathProgramCache]: Analyzing trace with hash -82461842, now seen corresponding path program 1 times [2022-01-19 14:28:08,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:28:08,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797777597] [2022-01-19 14:28:08,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:28:08,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:28:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:28:09,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:28:09,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:28:09,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797777597] [2022-01-19 14:28:09,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797777597] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:28:09,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235887147] [2022-01-19 14:28:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:28:09,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:28:09,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:28:09,141 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) [2022-01-19 14:28:09,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 14:28:09,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:28:09,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 55 conjunts are in the unsatisfiable core [2022-01-19 14:28:09,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:28:09,299 INFO L387 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 [2022-01-19 14:28:09,338 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-19 14:28:09,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-01-19 14:28:09,712 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 14:28:09,712 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-01-19 14:28:10,653 INFO L387 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 27 treesize of output 27 [2022-01-19 14:28:10,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-19 14:28:10,816 INFO L387 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 27 treesize of output 27 [2022-01-19 14:28:11,190 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-01-19 14:28:11,190 INFO L387 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 61 treesize of output 32 [2022-01-19 14:28:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:28:11,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:28:11,816 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_178 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_178) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))))) (or (not (< .cse0 c_~min3~0)) (not (< .cse0 c_~min2~0)) (= c_~min1~0 .cse0)))) (or (forall ((v_ArrVal_178 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_178) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))) c_~min3~0)) (= c_~min1~0 c_~min3~0) (not (< c_~min3~0 c_~min2~0)))) is different from false [2022-01-19 14:28:11,928 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_177 (Array Int Int)) (v_ArrVal_178 (Array Int Int))) (let ((.cse0 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_177) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_178) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))))) (or (not (< .cse0 c_~min2~0)) (= .cse0 c_~min1~0) (not (< .cse0 c_~min3~0))))) (or (forall ((v_ArrVal_177 (Array Int Int)) (v_ArrVal_178 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_177) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_178) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))) c_~min3~0)) (= c_~min1~0 c_~min3~0) (not (< c_~min3~0 c_~min2~0)))) is different from false [2022-01-19 14:28:12,039 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:28:12,040 INFO L387 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 655 treesize of output 583 [2022-01-19 14:28:12,045 INFO L387 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 544 treesize of output 532 [2022-01-19 14:28:12,058 INFO L387 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 532 treesize of output 508 [2022-01-19 14:28:12,063 INFO L387 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 508 treesize of output 472 [2022-01-19 14:28:12,068 INFO L387 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 472 treesize of output 400 [2022-01-19 14:28:17,240 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-19 14:28:17,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 14:28:17,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:28:17,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235887147] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:28:17,408 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:28:17,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 31] total 84 [2022-01-19 14:28:17,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388092815] [2022-01-19 14:28:17,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:28:17,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-01-19 14:28:17,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:28:17,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-01-19 14:28:17,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=746, Invalid=5901, Unknown=3, NotChecked=322, Total=6972 [2022-01-19 14:28:17,412 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 159 [2022-01-19 14:28:17,414 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 1293 transitions, 12643 flow. Second operand has 84 states, 84 states have (on average 55.642857142857146) internal successors, (4674), 84 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:28:17,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:28:17,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 159 [2022-01-19 14:28:17,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:28:36,939 INFO L129 PetriNetUnfolder]: 25156/42405 cut-off events. [2022-01-19 14:28:36,940 INFO L130 PetriNetUnfolder]: For 1648098/1648558 co-relation queries the response was YES. [2022-01-19 14:28:38,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 287430 conditions, 42405 events. 25156/42405 cut-off events. For 1648098/1648558 co-relation queries the response was YES. Maximal size of possible extension queue 2372. Compared 381282 event pairs, 3259 based on Foata normal form. 36/42135 useless extension candidates. Maximal degree in co-relation 287263. Up to 16542 conditions per place. [2022-01-19 14:28:38,780 INFO L132 encePairwiseOnDemand]: 114/159 looper letters, 1226 selfloop transitions, 902 changer transitions 24/2197 dead transitions. [2022-01-19 14:28:38,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 2197 transitions, 27222 flow [2022-01-19 14:28:38,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 14:28:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 14:28:38,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 4884 transitions. [2022-01-19 14:28:38,785 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3839622641509434 [2022-01-19 14:28:38,785 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 4884 transitions. [2022-01-19 14:28:38,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 4884 transitions. [2022-01-19 14:28:38,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:28:38,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 4884 transitions. [2022-01-19 14:28:38,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 61.05) internal successors, (4884), 80 states have internal predecessors, (4884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:28:38,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 159.0) internal successors, (12879), 81 states have internal predecessors, (12879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:28:38,800 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 159.0) internal successors, (12879), 81 states have internal predecessors, (12879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:28:38,800 INFO L186 Difference]: Start difference. First operand has 575 places, 1293 transitions, 12643 flow. Second operand 80 states and 4884 transitions. [2022-01-19 14:28:38,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 2197 transitions, 27222 flow [2022-01-19 14:28:55,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 2197 transitions, 24920 flow, removed 1109 selfloop flow, removed 40 redundant places. [2022-01-19 14:28:55,575 INFO L242 Difference]: Finished difference. Result has 641 places, 1614 transitions, 17440 flow [2022-01-19 14:28:55,577 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=11187, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=596, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=17440, PETRI_PLACES=641, PETRI_TRANSITIONS=1614} [2022-01-19 14:28:55,577 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 499 predicate places. [2022-01-19 14:28:55,577 INFO L470 AbstractCegarLoop]: Abstraction has has 641 places, 1614 transitions, 17440 flow [2022-01-19 14:28:55,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 55.642857142857146) internal successors, (4674), 84 states have internal predecessors, (4674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:28:55,578 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:28:55,578 INFO L254 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] [2022-01-19 14:28:55,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 14:28:55,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:28:55,791 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:28:55,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:28:55,792 INFO L85 PathProgramCache]: Analyzing trace with hash -485115376, now seen corresponding path program 2 times [2022-01-19 14:28:55,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:28:55,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048140945] [2022-01-19 14:28:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:28:55,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:28:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:28:56,334 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:28:56,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:28:56,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048140945] [2022-01-19 14:28:56,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048140945] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:28:56,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653073890] [2022-01-19 14:28:56,335 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 14:28:56,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:28:56,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:28:56,336 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) [2022-01-19 14:28:56,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 14:28:56,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 14:28:56,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:28:56,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-19 14:28:56,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:28:57,124 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:28:57,124 INFO L387 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 64 treesize of output 44 [2022-01-19 14:28:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:28:57,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:28:57,897 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:28:57,898 INFO L387 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 103 treesize of output 63 [2022-01-19 14:28:58,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:28:58,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653073890] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:28:58,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:28:58,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 19, 19] total 57 [2022-01-19 14:28:58,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903215969] [2022-01-19 14:28:58,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:28:58,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-19 14:28:58,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:28:58,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-19 14:28:58,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=2591, Unknown=0, NotChecked=0, Total=3192 [2022-01-19 14:28:58,985 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 159 [2022-01-19 14:28:58,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 1614 transitions, 17440 flow. Second operand has 57 states, 57 states have (on average 69.6140350877193) internal successors, (3968), 57 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:28:58,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:28:58,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 159 [2022-01-19 14:28:58,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:29:18,292 INFO L129 PetriNetUnfolder]: 27468/46633 cut-off events. [2022-01-19 14:29:18,292 INFO L130 PetriNetUnfolder]: For 1783096/1783651 co-relation queries the response was YES. [2022-01-19 14:29:20,531 INFO L84 FinitePrefix]: Finished finitePrefix Result has 319565 conditions, 46633 events. 27468/46633 cut-off events. For 1783096/1783651 co-relation queries the response was YES. Maximal size of possible extension queue 2615. Compared 430331 event pairs, 4990 based on Foata normal form. 44/46250 useless extension candidates. Maximal degree in co-relation 319375. Up to 22923 conditions per place. [2022-01-19 14:29:20,778 INFO L132 encePairwiseOnDemand]: 122/159 looper letters, 1238 selfloop transitions, 881 changer transitions 34/2207 dead transitions. [2022-01-19 14:29:20,778 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 2207 transitions, 27953 flow [2022-01-19 14:29:20,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-19 14:29:20,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-01-19 14:29:20,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 4509 transitions. [2022-01-19 14:29:20,782 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.46489328796783175 [2022-01-19 14:29:20,782 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 4509 transitions. [2022-01-19 14:29:20,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 4509 transitions. [2022-01-19 14:29:20,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:29:20,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 4509 transitions. [2022-01-19 14:29:20,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 73.91803278688525) internal successors, (4509), 61 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:29:20,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 159.0) internal successors, (9858), 62 states have internal predecessors, (9858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:29:20,793 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 159.0) internal successors, (9858), 62 states have internal predecessors, (9858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:29:20,793 INFO L186 Difference]: Start difference. First operand has 641 places, 1614 transitions, 17440 flow. Second operand 61 states and 4509 transitions. [2022-01-19 14:29:20,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 2207 transitions, 27953 flow [2022-01-19 14:29:42,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 2207 transitions, 27249 flow, removed 266 selfloop flow, removed 47 redundant places. [2022-01-19 14:29:42,375 INFO L242 Difference]: Finished difference. Result has 668 places, 1834 transitions, 22214 flow [2022-01-19 14:29:42,376 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=159, PETRI_DIFFERENCE_MINUEND_FLOW=16932, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=691, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=843, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=22214, PETRI_PLACES=668, PETRI_TRANSITIONS=1834} [2022-01-19 14:29:42,377 INFO L334 CegarLoopForPetriNet]: 142 programPoint places, 526 predicate places. [2022-01-19 14:29:42,377 INFO L470 AbstractCegarLoop]: Abstraction has has 668 places, 1834 transitions, 22214 flow [2022-01-19 14:29:42,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 69.6140350877193) internal successors, (3968), 57 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:29:42,378 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:29:42,378 INFO L254 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] [2022-01-19 14:29:42,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 14:29:42,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:29:42,593 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:29:42,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:29:42,594 INFO L85 PathProgramCache]: Analyzing trace with hash 419152348, now seen corresponding path program 3 times [2022-01-19 14:29:42,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:29:42,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641977929] [2022-01-19 14:29:42,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:29:42,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:29:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:29:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:29:43,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:29:43,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641977929] [2022-01-19 14:29:43,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641977929] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:29:43,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413788818] [2022-01-19 14:29:43,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 14:29:43,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:29:43,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:29:43,181 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) [2022-01-19 14:29:43,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 14:29:43,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 14:29:43,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:29:43,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-19 14:29:43,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:29:43,382 INFO L387 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 [2022-01-19 14:29:43,655 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 14:29:43,655 INFO L387 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 [2022-01-19 14:29:43,801 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-01-19 14:29:44,093 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:29:44,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:29:44,335 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:29:44,663 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:29:44,664 INFO L387 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 64 treesize of output 44 [2022-01-19 14:29:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:29:45,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:30:02,539 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:30:02,540 INFO L387 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 264 treesize of output 181 [2022-01-19 14:30:02,582 INFO L353 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2022-01-19 14:30:02,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6789 treesize of output 6477 [2022-01-19 14:30:02,652 INFO L353 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-01-19 14:30:02,653 INFO L387 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 6456 treesize of output 6045 [2022-01-19 14:30:02,730 INFO L353 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-01-19 14:30:02,730 INFO L387 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 6040 treesize of output 5213 [2022-01-19 14:30:02,799 INFO L353 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-01-19 14:30:02,800 INFO L387 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 5208 treesize of output 5005 [2022-01-19 14:30:02,867 INFO L353 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-01-19 14:30:02,868 INFO L387 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 5000 treesize of output 4925 [2022-01-19 14:30:02,932 INFO L353 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-01-19 14:30:02,932 INFO L387 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 4920 treesize of output 4905 [2022-01-19 14:30:02,957 INFO L884 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2022-01-19 14:30:02,996 INFO L353 Elim1Store]: treesize reduction 8, result has 33.3 percent of original size [2022-01-19 14:30:02,997 INFO L387 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 4900 treesize of output 4865 [2022-01-19 14:30:03,046 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2022-01-19 14:30:03,062 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 14:30:03,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:30:03,252 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArithmeticException: BigInteger out of long range at java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.computeDerApplicabilityScore(QuantifierPusher.java:685) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.selectBestEliminatee(QuantifierPusher.java:668) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:604) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:446) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:355) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:65) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:261) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:247) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:92) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-01-19 14:30:03,256 INFO L158 Benchmark]: Toolchain (without parser) took 162587.64ms. Allocated memory was 406.8MB in the beginning and 10.2GB in the end (delta: 9.8GB). Free memory was 353.2MB in the beginning and 5.9GB in the end (delta: -5.6GB). Peak memory consumption was 4.2GB. Max. memory is 16.0GB. [2022-01-19 14:30:03,257 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 406.8MB. Free memory is still 370.1MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 14:30:03,257 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.85ms. Allocated memory was 406.8MB in the beginning and 650.1MB in the end (delta: 243.3MB). Free memory was 353.1MB in the beginning and 621.7MB in the end (delta: -268.6MB). Peak memory consumption was 8.2MB. Max. memory is 16.0GB. [2022-01-19 14:30:03,257 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.66ms. Allocated memory is still 650.1MB. Free memory was 621.7MB in the beginning and 620.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 14:30:03,257 INFO L158 Benchmark]: Boogie Preprocessor took 24.93ms. Allocated memory is still 650.1MB. Free memory was 620.1MB in the beginning and 618.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 14:30:03,258 INFO L158 Benchmark]: RCFGBuilder took 409.20ms. Allocated memory is still 650.1MB. Free memory was 618.4MB in the beginning and 600.0MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-19 14:30:03,258 INFO L158 Benchmark]: TraceAbstraction took 161936.01ms. Allocated memory was 650.1MB in the beginning and 10.2GB in the end (delta: 9.5GB). Free memory was 599.5MB in the beginning and 5.9GB in the end (delta: -5.3GB). Peak memory consumption was 4.2GB. Max. memory is 16.0GB. [2022-01-19 14:30:03,260 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 406.8MB. Free memory is still 370.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 177.85ms. Allocated memory was 406.8MB in the beginning and 650.1MB in the end (delta: 243.3MB). Free memory was 353.1MB in the beginning and 621.7MB in the end (delta: -268.6MB). Peak memory consumption was 8.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.66ms. Allocated memory is still 650.1MB. Free memory was 621.7MB in the beginning and 620.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.93ms. Allocated memory is still 650.1MB. Free memory was 620.1MB in the beginning and 618.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 409.20ms. Allocated memory is still 650.1MB. Free memory was 618.4MB in the beginning and 600.0MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 161936.01ms. Allocated memory was 650.1MB in the beginning and 10.2GB in the end (delta: 9.5GB). Free memory was 599.5MB in the beginning and 5.9GB in the end (delta: -5.3GB). Peak memory consumption was 4.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: ArithmeticException: BigInteger out of long range de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArithmeticException: BigInteger out of long range: java.base/java.math.BigInteger.longValueExact(BigInteger.java:4765) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-01-19 14:30:03,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...