/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-sum-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 14:38:00,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 14:38:00,575 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 14:38:00,627 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 14:38:00,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 14:38:00,634 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 14:38:00,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 14:38:00,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 14:38:00,645 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 14:38:00,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 14:38:00,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 14:38:00,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 14:38:00,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 14:38:00,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 14:38:00,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 14:38:00,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 14:38:00,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 14:38:00,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 14:38:00,657 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 14:38:00,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 14:38:00,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 14:38:00,666 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 14:38:00,667 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 14:38:00,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 14:38:00,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 14:38:00,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 14:38:00,671 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 14:38:00,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 14:38:00,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 14:38:00,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 14:38:00,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 14:38:00,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 14:38:00,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 14:38:00,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 14:38:00,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 14:38:00,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 14:38:00,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 14:38:00,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 14:38:00,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 14:38:00,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 14:38:00,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 14:38:00,683 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 14:38:00,718 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 14:38:00,718 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 14:38:00,720 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 14:38:00,720 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 14:38:00,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 14:38:00,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 14:38:00,720 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 14:38:00,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 14:38:00,721 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 14:38:00,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 14:38:00,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 14:38:00,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 14:38:00,722 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 14:38:00,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 14:38:00,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 14:38:00,722 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 14:38:00,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 14:38:00,722 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 14:38:00,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 14:38:00,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 14:38:00,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 14:38:00,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 14:38:00,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 14:38:00,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 14:38:00,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 14:38:00,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 14:38:00,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 14:38:00,725 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 14:38:00,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 14:38:00,725 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 14:38:00,725 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 14:38:00,725 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 14:38:00,725 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 14:38:00,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 14:38:00,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 14:38:00,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 14:38:00,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 14:38:00,960 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 14:38:00,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2022-01-19 14:38:01,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc30e77e/68cf82d25d1046ff97eee68345181115/FLAGee7165ce0 [2022-01-19 14:38:01,420 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 14:38:01,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2022-01-19 14:38:01,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc30e77e/68cf82d25d1046ff97eee68345181115/FLAGee7165ce0 [2022-01-19 14:38:01,832 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dc30e77e/68cf82d25d1046ff97eee68345181115 [2022-01-19 14:38:01,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 14:38:01,835 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 14:38:01,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 14:38:01,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 14:38:01,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 14:38:01,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:38:01" (1/1) ... [2022-01-19 14:38:01,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@763e2d98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:01, skipping insertion in model container [2022-01-19 14:38:01,841 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:38:01" (1/1) ... [2022-01-19 14:38:01,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 14:38:01,862 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 14:38:02,026 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-sum-array-hom.wvr.c[2396,2409] [2022-01-19 14:38:02,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 14:38:02,038 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 14:38:02,056 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-sum-array-hom.wvr.c[2396,2409] [2022-01-19 14:38:02,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 14:38:02,070 INFO L208 MainTranslator]: Completed translation [2022-01-19 14:38:02,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02 WrapperNode [2022-01-19 14:38:02,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 14:38:02,071 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 14:38:02,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 14:38:02,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 14:38:02,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02" (1/1) ... [2022-01-19 14:38:02,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02" (1/1) ... [2022-01-19 14:38:02,103 INFO L137 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 102 [2022-01-19 14:38:02,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 14:38:02,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 14:38:02,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 14:38:02,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 14:38:02,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02" (1/1) ... [2022-01-19 14:38:02,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02" (1/1) ... [2022-01-19 14:38:02,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02" (1/1) ... [2022-01-19 14:38:02,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02" (1/1) ... [2022-01-19 14:38:02,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02" (1/1) ... [2022-01-19 14:38:02,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02" (1/1) ... [2022-01-19 14:38:02,124 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02" (1/1) ... [2022-01-19 14:38:02,126 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 14:38:02,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 14:38:02,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 14:38:02,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 14:38:02,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02" (1/1) ... [2022-01-19 14:38:02,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 14:38:02,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:38:02,159 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 14:38:02,160 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 14:38:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 14:38:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 14:38:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 14:38:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 14:38:02,190 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 14:38:02,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 14:38:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 14:38:02,191 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 14:38:02,191 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 14:38:02,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 14:38:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 14:38:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 14:38:02,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 14:38:02,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 14:38:02,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 14:38:02,195 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 14:38:02,292 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 14:38:02,293 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 14:38:02,517 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 14:38:02,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 14:38:02,526 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-19 14:38:02,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:38:02 BoogieIcfgContainer [2022-01-19 14:38:02,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 14:38:02,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 14:38:02,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 14:38:02,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 14:38:02,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:38:01" (1/3) ... [2022-01-19 14:38:02,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc04056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:38:02, skipping insertion in model container [2022-01-19 14:38:02,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:38:02" (2/3) ... [2022-01-19 14:38:02,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc04056 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:38:02, skipping insertion in model container [2022-01-19 14:38:02,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:38:02" (3/3) ... [2022-01-19 14:38:02,534 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2022-01-19 14:38:02,539 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 14:38:02,539 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 14:38:02,539 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 14:38:02,606 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,606 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,606 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,607 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,607 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,607 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,608 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,609 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,610 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,611 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,611 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,611 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,611 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,612 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,612 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,613 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,613 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,613 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,613 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,614 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,614 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,615 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,615 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,615 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,615 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,616 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,617 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,617 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,617 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,618 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,618 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,632 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,633 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,633 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,633 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,634 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,634 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,634 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,634 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,635 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,635 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,635 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,635 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,636 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,636 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,636 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,636 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,636 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,637 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,637 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,637 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,638 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,638 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,638 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,638 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,638 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,638 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,639 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,639 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,639 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,639 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,640 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,640 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,642 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,643 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,643 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,643 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,643 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,645 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,645 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,646 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,646 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,647 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,647 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,653 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork2_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,653 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:38:02,673 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 14:38:02,736 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 14:38:02,743 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 14:38:02,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 14:38:02,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 158 places, 160 transitions, 344 flow [2022-01-19 14:38:02,810 INFO L129 PetriNetUnfolder]: 12/157 cut-off events. [2022-01-19 14:38:02,810 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 14:38:02,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 157 events. 12/157 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2022-01-19 14:38:02,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 160 transitions, 344 flow [2022-01-19 14:38:02,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 146 transitions, 310 flow [2022-01-19 14:38:02,850 INFO L129 PetriNetUnfolder]: 12/145 cut-off events. [2022-01-19 14:38:02,850 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 14:38:02,851 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:02,851 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] [2022-01-19 14:38:02,852 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 14:38:02,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1367986410, now seen corresponding path program 1 times [2022-01-19 14:38:02,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:02,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977134759] [2022-01-19 14:38:02,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:02,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:03,383 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 14:38:03,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:03,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977134759] [2022-01-19 14:38:03,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977134759] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:38:03,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:38:03,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 14:38:03,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410249312] [2022-01-19 14:38:03,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:38:03,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 14:38:03,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:38:03,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 14:38:03,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-19 14:38:03,438 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 160 [2022-01-19 14:38:03,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 146 transitions, 310 flow. Second operand has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 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 14:38:03,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:38:03,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 160 [2022-01-19 14:38:03,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:38:03,728 INFO L129 PetriNetUnfolder]: 49/376 cut-off events. [2022-01-19 14:38:03,728 INFO L130 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2022-01-19 14:38:03,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 531 conditions, 376 events. 49/376 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1383 event pairs, 8 based on Foata normal form. 58/404 useless extension candidates. Maximal degree in co-relation 208. Up to 45 conditions per place. [2022-01-19 14:38:03,734 INFO L132 encePairwiseOnDemand]: 139/160 looper letters, 47 selfloop transitions, 9 changer transitions 11/173 dead transitions. [2022-01-19 14:38:03,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 173 transitions, 534 flow [2022-01-19 14:38:03,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 14:38:03,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 14:38:03,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1397 transitions. [2022-01-19 14:38:03,752 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.79375 [2022-01-19 14:38:03,753 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1397 transitions. [2022-01-19 14:38:03,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1397 transitions. [2022-01-19 14:38:03,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:38:03,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1397 transitions. [2022-01-19 14:38:03,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 127.0) internal successors, (1397), 11 states have internal predecessors, (1397), 0 states have call successors, (0), 0 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 14:38:03,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 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 14:38:03,853 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 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 14:38:03,855 INFO L186 Difference]: Start difference. First operand has 144 places, 146 transitions, 310 flow. Second operand 11 states and 1397 transitions. [2022-01-19 14:38:03,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 173 transitions, 534 flow [2022-01-19 14:38:03,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 173 transitions, 498 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 14:38:03,868 INFO L242 Difference]: Finished difference. Result has 152 places, 140 transitions, 327 flow [2022-01-19 14:38:03,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=327, PETRI_PLACES=152, PETRI_TRANSITIONS=140} [2022-01-19 14:38:03,872 INFO L334 CegarLoopForPetriNet]: 144 programPoint places, 8 predicate places. [2022-01-19 14:38:03,872 INFO L470 AbstractCegarLoop]: Abstraction has has 152 places, 140 transitions, 327 flow [2022-01-19 14:38:03,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 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 14:38:03,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:03,874 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] [2022-01-19 14:38:03,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 14:38:03,874 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 14:38:03,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:03,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1354690984, now seen corresponding path program 1 times [2022-01-19 14:38:03,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:03,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574283478] [2022-01-19 14:38:03,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:03,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:04,021 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 14:38:04,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:04,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574283478] [2022-01-19 14:38:04,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574283478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:38:04,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:38:04,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 14:38:04,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119457530] [2022-01-19 14:38:04,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:38:04,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 14:38:04,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:38:04,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 14:38:04,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 14:38:04,026 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-01-19 14:38:04,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 140 transitions, 327 flow. Second operand has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 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 14:38:04,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:38:04,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-01-19 14:38:04,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:38:04,274 INFO L129 PetriNetUnfolder]: 184/756 cut-off events. [2022-01-19 14:38:04,274 INFO L130 PetriNetUnfolder]: For 66/72 co-relation queries the response was YES. [2022-01-19 14:38:04,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1224 conditions, 756 events. 184/756 cut-off events. For 66/72 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4268 event pairs, 85 based on Foata normal form. 0/630 useless extension candidates. Maximal degree in co-relation 1197. Up to 252 conditions per place. [2022-01-19 14:38:04,285 INFO L132 encePairwiseOnDemand]: 151/160 looper letters, 41 selfloop transitions, 8 changer transitions 0/160 dead transitions. [2022-01-19 14:38:04,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 160 transitions, 473 flow [2022-01-19 14:38:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 14:38:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 14:38:04,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1026 transitions. [2022-01-19 14:38:04,288 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8015625 [2022-01-19 14:38:04,289 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1026 transitions. [2022-01-19 14:38:04,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1026 transitions. [2022-01-19 14:38:04,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:38:04,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1026 transitions. [2022-01-19 14:38:04,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 128.25) internal successors, (1026), 8 states have internal predecessors, (1026), 0 states have call successors, (0), 0 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 14:38:04,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 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 14:38:04,295 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 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 14:38:04,295 INFO L186 Difference]: Start difference. First operand has 152 places, 140 transitions, 327 flow. Second operand 8 states and 1026 transitions. [2022-01-19 14:38:04,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 160 transitions, 473 flow [2022-01-19 14:38:04,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 160 transitions, 469 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 14:38:04,305 INFO L242 Difference]: Finished difference. Result has 150 places, 143 transitions, 359 flow [2022-01-19 14:38:04,305 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=359, PETRI_PLACES=150, PETRI_TRANSITIONS=143} [2022-01-19 14:38:04,306 INFO L334 CegarLoopForPetriNet]: 144 programPoint places, 6 predicate places. [2022-01-19 14:38:04,307 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 143 transitions, 359 flow [2022-01-19 14:38:04,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.42857142857143) internal successors, (878), 7 states have internal predecessors, (878), 0 states have call successors, (0), 0 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 14:38:04,307 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:04,308 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] [2022-01-19 14:38:04,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 14:38:04,309 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 14:38:04,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:04,313 INFO L85 PathProgramCache]: Analyzing trace with hash 73956418, now seen corresponding path program 1 times [2022-01-19 14:38:04,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:04,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171662632] [2022-01-19 14:38:04,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:04,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:04,499 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 14:38:04,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:04,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171662632] [2022-01-19 14:38:04,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171662632] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:38:04,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:38:04,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 14:38:04,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144586364] [2022-01-19 14:38:04,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:38:04,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 14:38:04,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:38:04,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 14:38:04,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-19 14:38:04,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 160 [2022-01-19 14:38:04,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 143 transitions, 359 flow. Second operand has 10 states, 10 states have (on average 104.1) internal successors, (1041), 10 states have internal predecessors, (1041), 0 states have call successors, (0), 0 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 14:38:04,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:38:04,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 160 [2022-01-19 14:38:04,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:38:04,991 INFO L129 PetriNetUnfolder]: 856/2248 cut-off events. [2022-01-19 14:38:04,991 INFO L130 PetriNetUnfolder]: For 313/335 co-relation queries the response was YES. [2022-01-19 14:38:05,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3960 conditions, 2248 events. 856/2248 cut-off events. For 313/335 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 17056 event pairs, 565 based on Foata normal form. 21/1945 useless extension candidates. Maximal degree in co-relation 3404. Up to 1089 conditions per place. [2022-01-19 14:38:05,018 INFO L132 encePairwiseOnDemand]: 146/160 looper letters, 65 selfloop transitions, 13 changer transitions 0/172 dead transitions. [2022-01-19 14:38:05,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 172 transitions, 583 flow [2022-01-19 14:38:05,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 14:38:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 14:38:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1379 transitions. [2022-01-19 14:38:05,023 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6629807692307692 [2022-01-19 14:38:05,023 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1379 transitions. [2022-01-19 14:38:05,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1379 transitions. [2022-01-19 14:38:05,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:38:05,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1379 transitions. [2022-01-19 14:38:05,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 106.07692307692308) internal successors, (1379), 13 states have internal predecessors, (1379), 0 states have call successors, (0), 0 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 14:38:05,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:38:05,034 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:38:05,034 INFO L186 Difference]: Start difference. First operand has 150 places, 143 transitions, 359 flow. Second operand 13 states and 1379 transitions. [2022-01-19 14:38:05,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 172 transitions, 583 flow [2022-01-19 14:38:05,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 172 transitions, 573 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 14:38:05,042 INFO L242 Difference]: Finished difference. Result has 163 places, 147 transitions, 402 flow [2022-01-19 14:38:05,043 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=402, PETRI_PLACES=163, PETRI_TRANSITIONS=147} [2022-01-19 14:38:05,045 INFO L334 CegarLoopForPetriNet]: 144 programPoint places, 19 predicate places. [2022-01-19 14:38:05,045 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 147 transitions, 402 flow [2022-01-19 14:38:05,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.1) internal successors, (1041), 10 states have internal predecessors, (1041), 0 states have call successors, (0), 0 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 14:38:05,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:05,046 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] [2022-01-19 14:38:05,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 14:38:05,046 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 14:38:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:05,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2069950516, now seen corresponding path program 1 times [2022-01-19 14:38:05,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:05,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907279524] [2022-01-19 14:38:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:05,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:05,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:05,371 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 14:38:05,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:05,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907279524] [2022-01-19 14:38:05,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907279524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:38:05,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:38:05,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 14:38:05,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659226813] [2022-01-19 14:38:05,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:38:05,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 14:38:05,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:38:05,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 14:38:05,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 14:38:05,381 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 160 [2022-01-19 14:38:05,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 147 transitions, 402 flow. Second operand has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 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 14:38:05,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:38:05,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 160 [2022-01-19 14:38:05,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:38:05,947 INFO L129 PetriNetUnfolder]: 640/1565 cut-off events. [2022-01-19 14:38:05,947 INFO L130 PetriNetUnfolder]: For 402/420 co-relation queries the response was YES. [2022-01-19 14:38:05,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3024 conditions, 1565 events. 640/1565 cut-off events. For 402/420 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 10378 event pairs, 440 based on Foata normal form. 18/1392 useless extension candidates. Maximal degree in co-relation 2728. Up to 909 conditions per place. [2022-01-19 14:38:05,961 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 44 selfloop transitions, 6 changer transitions 21/165 dead transitions. [2022-01-19 14:38:05,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 165 transitions, 584 flow [2022-01-19 14:38:05,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 14:38:05,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 14:38:05,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1181 transitions. [2022-01-19 14:38:05,965 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6710227272727273 [2022-01-19 14:38:05,965 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1181 transitions. [2022-01-19 14:38:05,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1181 transitions. [2022-01-19 14:38:05,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:38:05,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1181 transitions. [2022-01-19 14:38:05,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 107.36363636363636) internal successors, (1181), 11 states have internal predecessors, (1181), 0 states have call successors, (0), 0 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 14:38:05,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 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 14:38:05,971 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 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 14:38:05,971 INFO L186 Difference]: Start difference. First operand has 163 places, 147 transitions, 402 flow. Second operand 11 states and 1181 transitions. [2022-01-19 14:38:05,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 165 transitions, 584 flow [2022-01-19 14:38:05,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 165 transitions, 567 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-01-19 14:38:05,978 INFO L242 Difference]: Finished difference. Result has 168 places, 141 transitions, 363 flow [2022-01-19 14:38:05,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=363, PETRI_PLACES=168, PETRI_TRANSITIONS=141} [2022-01-19 14:38:05,980 INFO L334 CegarLoopForPetriNet]: 144 programPoint places, 24 predicate places. [2022-01-19 14:38:05,980 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 141 transitions, 363 flow [2022-01-19 14:38:05,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 105.0) internal successors, (1050), 10 states have internal predecessors, (1050), 0 states have call successors, (0), 0 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 14:38:05,981 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:05,981 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] [2022-01-19 14:38:05,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 14:38:05,982 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 14:38:05,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:05,982 INFO L85 PathProgramCache]: Analyzing trace with hash -40833583, now seen corresponding path program 1 times [2022-01-19 14:38:05,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:05,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422439890] [2022-01-19 14:38:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:05,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:06,083 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 14:38:06,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:06,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422439890] [2022-01-19 14:38:06,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422439890] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:06,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374152301] [2022-01-19 14:38:06,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:06,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:06,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:38:06,091 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 14:38:06,114 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 14:38:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:06,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 14:38:06,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:38:06,479 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 14:38:06,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:38:06,762 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 14:38:06,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374152301] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:06,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 14:38:06,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-01-19 14:38:06,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17941790] [2022-01-19 14:38:06,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:38:06,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:38:06,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:38:06,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:38:06,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-01-19 14:38:06,766 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-01-19 14:38:06,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 141 transitions, 363 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 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 14:38:06,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:38:06,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-01-19 14:38:06,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:38:07,279 INFO L129 PetriNetUnfolder]: 1394/3136 cut-off events. [2022-01-19 14:38:07,280 INFO L130 PetriNetUnfolder]: For 843/844 co-relation queries the response was YES. [2022-01-19 14:38:07,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6283 conditions, 3136 events. 1394/3136 cut-off events. For 843/844 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 24659 event pairs, 430 based on Foata normal form. 9/3058 useless extension candidates. Maximal degree in co-relation 6186. Up to 619 conditions per place. [2022-01-19 14:38:07,311 INFO L132 encePairwiseOnDemand]: 149/160 looper letters, 72 selfloop transitions, 17 changer transitions 0/192 dead transitions. [2022-01-19 14:38:07,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 192 transitions, 682 flow [2022-01-19 14:38:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 14:38:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 14:38:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1343 transitions. [2022-01-19 14:38:07,315 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630681818181818 [2022-01-19 14:38:07,315 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1343 transitions. [2022-01-19 14:38:07,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1343 transitions. [2022-01-19 14:38:07,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:38:07,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1343 transitions. [2022-01-19 14:38:07,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.0909090909091) internal successors, (1343), 11 states have internal predecessors, (1343), 0 states have call successors, (0), 0 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 14:38:07,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 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 14:38:07,321 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 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 14:38:07,321 INFO L186 Difference]: Start difference. First operand has 168 places, 141 transitions, 363 flow. Second operand 11 states and 1343 transitions. [2022-01-19 14:38:07,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 192 transitions, 682 flow [2022-01-19 14:38:07,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 192 transitions, 624 flow, removed 23 selfloop flow, removed 14 redundant places. [2022-01-19 14:38:07,329 INFO L242 Difference]: Finished difference. Result has 157 places, 153 transitions, 427 flow [2022-01-19 14:38:07,329 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=427, PETRI_PLACES=157, PETRI_TRANSITIONS=153} [2022-01-19 14:38:07,330 INFO L334 CegarLoopForPetriNet]: 144 programPoint places, 13 predicate places. [2022-01-19 14:38:07,330 INFO L470 AbstractCegarLoop]: Abstraction has has 157 places, 153 transitions, 427 flow [2022-01-19 14:38:07,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 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 14:38:07,331 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:07,331 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] [2022-01-19 14:38:07,359 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 14:38:07,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:07,556 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 14:38:07,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:07,557 INFO L85 PathProgramCache]: Analyzing trace with hash -434299201, now seen corresponding path program 2 times [2022-01-19 14:38:07,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:07,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441255134] [2022-01-19 14:38:07,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:07,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:07,666 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 14:38:07,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:07,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441255134] [2022-01-19 14:38:07,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441255134] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:07,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164434153] [2022-01-19 14:38:07,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 14:38:07,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:07,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:38:07,668 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 14:38:07,669 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 14:38:07,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 14:38:07,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:38:07,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-19 14:38:07,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:38:08,019 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 14:38:08,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:38:08,222 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 14:38:08,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164434153] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:38:08,222 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:38:08,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2022-01-19 14:38:08,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271055457] [2022-01-19 14:38:08,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:38:08,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-19 14:38:08,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:38:08,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-19 14:38:08,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-01-19 14:38:08,226 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 160 [2022-01-19 14:38:08,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 153 transitions, 427 flow. Second operand has 17 states, 17 states have (on average 113.6470588235294) internal successors, (1932), 17 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 14:38:08,227 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:38:08,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 160 [2022-01-19 14:38:08,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:38:09,796 INFO L129 PetriNetUnfolder]: 3980/8113 cut-off events. [2022-01-19 14:38:09,797 INFO L130 PetriNetUnfolder]: For 3000/3053 co-relation queries the response was YES. [2022-01-19 14:38:09,828 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18143 conditions, 8113 events. 3980/8113 cut-off events. For 3000/3053 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 68580 event pairs, 329 based on Foata normal form. 34/7702 useless extension candidates. Maximal degree in co-relation 18048. Up to 745 conditions per place. [2022-01-19 14:38:09,869 INFO L132 encePairwiseOnDemand]: 144/160 looper letters, 219 selfloop transitions, 88 changer transitions 0/406 dead transitions. [2022-01-19 14:38:09,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 406 transitions, 1810 flow [2022-01-19 14:38:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 14:38:09,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 14:38:09,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2927 transitions. [2022-01-19 14:38:09,876 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622395833333333 [2022-01-19 14:38:09,876 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2927 transitions. [2022-01-19 14:38:09,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2927 transitions. [2022-01-19 14:38:09,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:38:09,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2927 transitions. [2022-01-19 14:38:09,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 121.95833333333333) internal successors, (2927), 24 states have internal predecessors, (2927), 0 states have call successors, (0), 0 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 14:38:09,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 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 14:38:09,890 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 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 14:38:09,890 INFO L186 Difference]: Start difference. First operand has 157 places, 153 transitions, 427 flow. Second operand 24 states and 2927 transitions. [2022-01-19 14:38:09,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 406 transitions, 1810 flow [2022-01-19 14:38:09,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 406 transitions, 1805 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 14:38:09,945 INFO L242 Difference]: Finished difference. Result has 195 places, 234 transitions, 1161 flow [2022-01-19 14:38:09,945 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1161, PETRI_PLACES=195, PETRI_TRANSITIONS=234} [2022-01-19 14:38:09,946 INFO L334 CegarLoopForPetriNet]: 144 programPoint places, 51 predicate places. [2022-01-19 14:38:09,946 INFO L470 AbstractCegarLoop]: Abstraction has has 195 places, 234 transitions, 1161 flow [2022-01-19 14:38:09,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 113.6470588235294) internal successors, (1932), 17 states have internal predecessors, (1932), 0 states have call successors, (0), 0 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 14:38:09,947 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:09,947 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] [2022-01-19 14:38:09,972 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 14:38:10,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-19 14:38:10,172 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 14:38:10,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:10,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1761054417, now seen corresponding path program 1 times [2022-01-19 14:38:10,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:10,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046113931] [2022-01-19 14:38:10,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:10,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:10,242 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 14:38:10,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:10,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046113931] [2022-01-19 14:38:10,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046113931] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:10,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926034581] [2022-01-19 14:38:10,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:10,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:10,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:38:10,245 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 14:38:10,246 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 14:38:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:10,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-19 14:38:10,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:38:10,554 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 14:38:10,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:38:10,794 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 14:38:10,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926034581] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:10,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 14:38:10,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-01-19 14:38:10,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247531884] [2022-01-19 14:38:10,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:38:10,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 14:38:10,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:38:10,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 14:38:10,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-01-19 14:38:10,797 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 160 [2022-01-19 14:38:10,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 234 transitions, 1161 flow. Second operand has 7 states, 7 states have (on average 125.57142857142857) internal successors, (879), 7 states have internal predecessors, (879), 0 states have call successors, (0), 0 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 14:38:10,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:38:10,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 160 [2022-01-19 14:38:10,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:38:11,107 INFO L129 PetriNetUnfolder]: 674/2240 cut-off events. [2022-01-19 14:38:11,107 INFO L130 PetriNetUnfolder]: For 7035/7567 co-relation queries the response was YES. [2022-01-19 14:38:11,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6166 conditions, 2240 events. 674/2240 cut-off events. For 7035/7567 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 18349 event pairs, 110 based on Foata normal form. 129/2266 useless extension candidates. Maximal degree in co-relation 6053. Up to 370 conditions per place. [2022-01-19 14:38:11,134 INFO L132 encePairwiseOnDemand]: 152/160 looper letters, 63 selfloop transitions, 24 changer transitions 0/251 dead transitions. [2022-01-19 14:38:11,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 251 transitions, 1459 flow [2022-01-19 14:38:11,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 14:38:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 14:38:11,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 890 transitions. [2022-01-19 14:38:11,137 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7946428571428571 [2022-01-19 14:38:11,137 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 890 transitions. [2022-01-19 14:38:11,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 890 transitions. [2022-01-19 14:38:11,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:38:11,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 890 transitions. [2022-01-19 14:38:11,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 127.14285714285714) internal successors, (890), 7 states have internal predecessors, (890), 0 states have call successors, (0), 0 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 14:38:11,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 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 14:38:11,141 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 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 14:38:11,142 INFO L186 Difference]: Start difference. First operand has 195 places, 234 transitions, 1161 flow. Second operand 7 states and 890 transitions. [2022-01-19 14:38:11,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 251 transitions, 1459 flow [2022-01-19 14:38:11,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 251 transitions, 1413 flow, removed 7 selfloop flow, removed 8 redundant places. [2022-01-19 14:38:11,169 INFO L242 Difference]: Finished difference. Result has 194 places, 234 transitions, 1171 flow [2022-01-19 14:38:11,170 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1098, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1171, PETRI_PLACES=194, PETRI_TRANSITIONS=234} [2022-01-19 14:38:11,170 INFO L334 CegarLoopForPetriNet]: 144 programPoint places, 50 predicate places. [2022-01-19 14:38:11,170 INFO L470 AbstractCegarLoop]: Abstraction has has 194 places, 234 transitions, 1171 flow [2022-01-19 14:38:11,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 125.57142857142857) internal successors, (879), 7 states have internal predecessors, (879), 0 states have call successors, (0), 0 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 14:38:11,171 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:11,171 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] [2022-01-19 14:38:11,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 14:38:11,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:11,388 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 14:38:11,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:11,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1358578551, now seen corresponding path program 3 times [2022-01-19 14:38:11,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:11,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594758319] [2022-01-19 14:38:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:11,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:11,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:38:11,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:11,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594758319] [2022-01-19 14:38:11,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594758319] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:11,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819843863] [2022-01-19 14:38:11,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 14:38:11,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:11,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:38:11,496 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 14:38:11,498 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 14:38:11,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-19 14:38:11,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:38:11,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 14:38:11,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:38:11,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:38:11,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:38:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:38:12,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819843863] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:38:12,227 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:38:12,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 18 [2022-01-19 14:38:12,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915882298] [2022-01-19 14:38:12,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:38:12,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 14:38:12,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:38:12,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 14:38:12,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-01-19 14:38:12,231 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-01-19 14:38:12,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 234 transitions, 1171 flow. Second operand has 18 states, 18 states have (on average 116.94444444444444) internal successors, (2105), 18 states have internal predecessors, (2105), 0 states have call successors, (0), 0 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 14:38:12,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:38:12,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-01-19 14:38:12,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:38:13,264 INFO L129 PetriNetUnfolder]: 2825/6173 cut-off events. [2022-01-19 14:38:13,264 INFO L130 PetriNetUnfolder]: For 12942/13506 co-relation queries the response was YES. [2022-01-19 14:38:13,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18759 conditions, 6173 events. 2825/6173 cut-off events. For 12942/13506 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 51065 event pairs, 384 based on Foata normal form. 87/6045 useless extension candidates. Maximal degree in co-relation 18646. Up to 928 conditions per place. [2022-01-19 14:38:13,352 INFO L132 encePairwiseOnDemand]: 147/160 looper letters, 133 selfloop transitions, 124 changer transitions 0/377 dead transitions. [2022-01-19 14:38:13,352 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 377 transitions, 2554 flow [2022-01-19 14:38:13,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 14:38:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 14:38:13,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1819 transitions. [2022-01-19 14:38:13,357 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7579166666666667 [2022-01-19 14:38:13,357 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1819 transitions. [2022-01-19 14:38:13,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1819 transitions. [2022-01-19 14:38:13,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:38:13,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1819 transitions. [2022-01-19 14:38:13,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 121.26666666666667) internal successors, (1819), 15 states have internal predecessors, (1819), 0 states have call successors, (0), 0 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 14:38:13,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 160.0) internal successors, (2560), 16 states have internal predecessors, (2560), 0 states have call successors, (0), 0 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 14:38:13,367 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 160.0) internal successors, (2560), 16 states have internal predecessors, (2560), 0 states have call successors, (0), 0 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 14:38:13,367 INFO L186 Difference]: Start difference. First operand has 194 places, 234 transitions, 1171 flow. Second operand 15 states and 1819 transitions. [2022-01-19 14:38:13,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 377 transitions, 2554 flow [2022-01-19 14:38:13,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 377 transitions, 2519 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-01-19 14:38:13,430 INFO L242 Difference]: Finished difference. Result has 209 places, 301 transitions, 2112 flow [2022-01-19 14:38:13,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1144, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2112, PETRI_PLACES=209, PETRI_TRANSITIONS=301} [2022-01-19 14:38:13,431 INFO L334 CegarLoopForPetriNet]: 144 programPoint places, 65 predicate places. [2022-01-19 14:38:13,431 INFO L470 AbstractCegarLoop]: Abstraction has has 209 places, 301 transitions, 2112 flow [2022-01-19 14:38:13,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 116.94444444444444) internal successors, (2105), 18 states have internal predecessors, (2105), 0 states have call successors, (0), 0 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 14:38:13,435 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:13,435 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] [2022-01-19 14:38:13,461 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 14:38:13,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:13,644 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 14:38:13,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:13,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1212757809, now seen corresponding path program 4 times [2022-01-19 14:38:13,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:13,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327274285] [2022-01-19 14:38:13,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:13,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:13,739 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 14:38:13,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:13,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327274285] [2022-01-19 14:38:13,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327274285] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:13,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608743931] [2022-01-19 14:38:13,739 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 14:38:13,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:13,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:38:13,741 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 14:38:13,762 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 14:38:13,821 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 14:38:13,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:38:13,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 14:38:13,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:38:14,089 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 14:38:14,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:38:14,427 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 14:38:14,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608743931] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:14,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 14:38:14,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2022-01-19 14:38:14,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885447981] [2022-01-19 14:38:14,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:38:14,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:38:14,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:38:14,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:38:14,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-01-19 14:38:14,430 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-01-19 14:38:14,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 301 transitions, 2112 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 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 14:38:14,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:38:14,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-01-19 14:38:14,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:38:15,470 INFO L129 PetriNetUnfolder]: 3161/7053 cut-off events. [2022-01-19 14:38:15,471 INFO L130 PetriNetUnfolder]: For 24109/24829 co-relation queries the response was YES. [2022-01-19 14:38:15,521 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23872 conditions, 7053 events. 3161/7053 cut-off events. For 24109/24829 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 60548 event pairs, 522 based on Foata normal form. 224/7064 useless extension candidates. Maximal degree in co-relation 23752. Up to 1539 conditions per place. [2022-01-19 14:38:15,567 INFO L132 encePairwiseOnDemand]: 147/160 looper letters, 129 selfloop transitions, 126 changer transitions 0/375 dead transitions. [2022-01-19 14:38:15,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 375 transitions, 3100 flow [2022-01-19 14:38:15,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 14:38:15,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 14:38:15,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1353 transitions. [2022-01-19 14:38:15,579 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76875 [2022-01-19 14:38:15,579 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1353 transitions. [2022-01-19 14:38:15,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1353 transitions. [2022-01-19 14:38:15,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:38:15,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1353 transitions. [2022-01-19 14:38:15,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 123.0) internal successors, (1353), 11 states have internal predecessors, (1353), 0 states have call successors, (0), 0 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 14:38:15,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 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 14:38:15,680 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 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 14:38:15,680 INFO L186 Difference]: Start difference. First operand has 209 places, 301 transitions, 2112 flow. Second operand 11 states and 1353 transitions. [2022-01-19 14:38:15,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 375 transitions, 3100 flow [2022-01-19 14:38:15,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 375 transitions, 3061 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-01-19 14:38:15,837 INFO L242 Difference]: Finished difference. Result has 219 places, 323 transitions, 2806 flow [2022-01-19 14:38:15,838 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2087, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2806, PETRI_PLACES=219, PETRI_TRANSITIONS=323} [2022-01-19 14:38:15,838 INFO L334 CegarLoopForPetriNet]: 144 programPoint places, 75 predicate places. [2022-01-19 14:38:15,838 INFO L470 AbstractCegarLoop]: Abstraction has has 219 places, 323 transitions, 2806 flow [2022-01-19 14:38:15,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 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 14:38:15,839 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:15,839 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] [2022-01-19 14:38:15,863 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 14:38:16,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:16,056 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:38:16,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:16,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1165057115, now seen corresponding path program 5 times [2022-01-19 14:38:16,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:16,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487354004] [2022-01-19 14:38:16,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:16,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:16,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:38:16,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:16,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487354004] [2022-01-19 14:38:16,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487354004] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:16,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593811693] [2022-01-19 14:38:16,175 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 14:38:16,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:16,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:38:16,176 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 14:38:16,177 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 14:38:16,257 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 14:38:16,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:38:16,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-19 14:38:16,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:38:16,517 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 14:38:16,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:38:16,707 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 14:38:16,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593811693] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:38:16,708 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:38:16,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-01-19 14:38:16,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600870261] [2022-01-19 14:38:16,708 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:38:16,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-19 14:38:16,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:38:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-19 14:38:16,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-19 14:38:16,711 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 160 [2022-01-19 14:38:16,712 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 323 transitions, 2806 flow. Second operand has 16 states, 16 states have (on average 113.8125) internal successors, (1821), 16 states have internal predecessors, (1821), 0 states have call successors, (0), 0 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 14:38:16,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:38:16,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 160 [2022-01-19 14:38:16,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:38:18,840 INFO L129 PetriNetUnfolder]: 5646/11597 cut-off events. [2022-01-19 14:38:18,841 INFO L130 PetriNetUnfolder]: For 61253/61510 co-relation queries the response was YES. [2022-01-19 14:38:18,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43735 conditions, 11597 events. 5646/11597 cut-off events. For 61253/61510 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 101117 event pairs, 708 based on Foata normal form. 61/11458 useless extension candidates. Maximal degree in co-relation 43610. Up to 1166 conditions per place. [2022-01-19 14:38:19,024 INFO L132 encePairwiseOnDemand]: 143/160 looper letters, 233 selfloop transitions, 237 changer transitions 0/569 dead transitions. [2022-01-19 14:38:19,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 569 transitions, 5314 flow [2022-01-19 14:38:19,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 14:38:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 14:38:19,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2907 transitions. [2022-01-19 14:38:19,029 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.75703125 [2022-01-19 14:38:19,029 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2907 transitions. [2022-01-19 14:38:19,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2907 transitions. [2022-01-19 14:38:19,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:38:19,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2907 transitions. [2022-01-19 14:38:19,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 121.125) internal successors, (2907), 24 states have internal predecessors, (2907), 0 states have call successors, (0), 0 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 14:38:19,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 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 14:38:19,049 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 160.0) internal successors, (4000), 25 states have internal predecessors, (4000), 0 states have call successors, (0), 0 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 14:38:19,049 INFO L186 Difference]: Start difference. First operand has 219 places, 323 transitions, 2806 flow. Second operand 24 states and 2907 transitions. [2022-01-19 14:38:19,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 569 transitions, 5314 flow [2022-01-19 14:38:19,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 569 transitions, 5196 flow, removed 12 selfloop flow, removed 6 redundant places. [2022-01-19 14:38:19,426 INFO L242 Difference]: Finished difference. Result has 248 places, 424 transitions, 4356 flow [2022-01-19 14:38:19,428 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2728, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4356, PETRI_PLACES=248, PETRI_TRANSITIONS=424} [2022-01-19 14:38:19,429 INFO L334 CegarLoopForPetriNet]: 144 programPoint places, 104 predicate places. [2022-01-19 14:38:19,429 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 424 transitions, 4356 flow [2022-01-19 14:38:19,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 113.8125) internal successors, (1821), 16 states have internal predecessors, (1821), 0 states have call successors, (0), 0 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 14:38:19,429 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:19,430 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] [2022-01-19 14:38:19,453 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 14:38:19,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:19,643 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:38:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash -186314357, now seen corresponding path program 6 times [2022-01-19 14:38:19,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:19,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706096739] [2022-01-19 14:38:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:19,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:19,754 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 14:38:19,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:19,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706096739] [2022-01-19 14:38:19,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706096739] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:19,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538059882] [2022-01-19 14:38:19,755 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 14:38:19,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:19,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:38:19,756 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 14:38:19,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 14:38:19,844 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-19 14:38:19,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:38:19,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-19 14:38:19,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:38:20,093 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 14:38:20,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:38:20,411 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 14:38:20,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538059882] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:20,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 14:38:20,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 20 [2022-01-19 14:38:20,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275142671] [2022-01-19 14:38:20,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:38:20,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:38:20,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:38:20,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:38:20,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-01-19 14:38:20,414 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 160 [2022-01-19 14:38:20,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 424 transitions, 4356 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 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 14:38:20,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:38:20,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 160 [2022-01-19 14:38:20,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:38:21,616 INFO L129 PetriNetUnfolder]: 3171/7018 cut-off events. [2022-01-19 14:38:21,616 INFO L130 PetriNetUnfolder]: For 42577/43096 co-relation queries the response was YES. [2022-01-19 14:38:21,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28375 conditions, 7018 events. 3171/7018 cut-off events. For 42577/43096 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 60399 event pairs, 409 based on Foata normal form. 69/6885 useless extension candidates. Maximal degree in co-relation 28238. Up to 1998 conditions per place. [2022-01-19 14:38:21,695 INFO L132 encePairwiseOnDemand]: 148/160 looper letters, 124 selfloop transitions, 163 changer transitions 0/453 dead transitions. [2022-01-19 14:38:21,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 453 transitions, 5093 flow [2022-01-19 14:38:21,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 14:38:21,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 14:38:21,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1220 transitions. [2022-01-19 14:38:21,698 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625 [2022-01-19 14:38:21,698 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1220 transitions. [2022-01-19 14:38:21,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1220 transitions. [2022-01-19 14:38:21,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:38:21,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1220 transitions. [2022-01-19 14:38:21,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 122.0) internal successors, (1220), 10 states have internal predecessors, (1220), 0 states have call successors, (0), 0 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 14:38:21,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 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 14:38:21,702 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 160.0) internal successors, (1760), 11 states have internal predecessors, (1760), 0 states have call successors, (0), 0 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 14:38:21,702 INFO L186 Difference]: Start difference. First operand has 248 places, 424 transitions, 4356 flow. Second operand 10 states and 1220 transitions. [2022-01-19 14:38:21,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 453 transitions, 5093 flow [2022-01-19 14:38:21,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 453 transitions, 4966 flow, removed 38 selfloop flow, removed 6 redundant places. [2022-01-19 14:38:21,947 INFO L242 Difference]: Finished difference. Result has 254 places, 427 transitions, 4845 flow [2022-01-19 14:38:21,948 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4237, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4845, PETRI_PLACES=254, PETRI_TRANSITIONS=427} [2022-01-19 14:38:21,948 INFO L334 CegarLoopForPetriNet]: 144 programPoint places, 110 predicate places. [2022-01-19 14:38:21,948 INFO L470 AbstractCegarLoop]: Abstraction has has 254 places, 427 transitions, 4845 flow [2022-01-19 14:38:21,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 0 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 14:38:21,949 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:38:21,949 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, 1] [2022-01-19 14:38:21,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-19 14:38:22,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:22,150 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 14:38:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:38:22,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2057679709, now seen corresponding path program 1 times [2022-01-19 14:38:22,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:38:22,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990741795] [2022-01-19 14:38:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:22,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:38:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:23,150 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 14:38:23,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:38:23,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990741795] [2022-01-19 14:38:23,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990741795] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:38:23,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444219956] [2022-01-19 14:38:23,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:38:23,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:38:23,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:38:23,153 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 14:38:23,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 14:38:23,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:38:23,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-19 14:38:23,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:38:24,727 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:38:24,728 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 17 treesize of output 17 [2022-01-19 14:38:25,175 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 14:38:25,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:38:25,830 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:38:25,830 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 28 treesize of output 29 Received shutdown request... [2022-01-19 14:52:18,615 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-19 14:52:18,617 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 14:52:18,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 14:52:18,653 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 14:52:18,653 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 14:52:18,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-19 14:52:18,818 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 128 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 44ms.. [2022-01-19 14:52:18,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 14:52:18,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 14:52:18,819 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 14:52:18,822 INFO L732 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1] [2022-01-19 14:52:18,823 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 14:52:18,823 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 14:52:18,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 02:52:18 BasicIcfg [2022-01-19 14:52:18,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 14:52:18,826 INFO L158 Benchmark]: Toolchain (without parser) took 856990.44ms. Allocated memory was 341.8MB in the beginning and 3.3GB in the end (delta: 3.0GB). Free memory was 284.0MB in the beginning and 1.1GB in the end (delta: -837.2MB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2022-01-19 14:52:18,826 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 341.8MB. Free memory was 300.4MB in the beginning and 300.4MB in the end (delta: 71.6kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 14:52:18,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.06ms. Allocated memory was 341.8MB in the beginning and 469.8MB in the end (delta: 127.9MB). Free memory was 283.8MB in the beginning and 439.0MB in the end (delta: -155.2MB). Peak memory consumption was 11.1MB. Max. memory is 16.0GB. [2022-01-19 14:52:18,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.75ms. Allocated memory is still 469.8MB. Free memory was 438.5MB in the beginning and 436.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 14:52:18,827 INFO L158 Benchmark]: Boogie Preprocessor took 22.07ms. Allocated memory is still 469.8MB. Free memory was 436.9MB in the beginning and 435.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 14:52:18,827 INFO L158 Benchmark]: RCFGBuilder took 401.10ms. Allocated memory is still 469.8MB. Free memory was 435.4MB in the beginning and 420.8MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 14:52:18,827 INFO L158 Benchmark]: TraceAbstraction took 856296.46ms. Allocated memory was 469.8MB in the beginning and 3.3GB in the end (delta: 2.9GB). Free memory was 420.2MB in the beginning and 1.1GB in the end (delta: -701.1MB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. [2022-01-19 14:52:18,828 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 341.8MB. Free memory was 300.4MB in the beginning and 300.4MB in the end (delta: 71.6kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 234.06ms. Allocated memory was 341.8MB in the beginning and 469.8MB in the end (delta: 127.9MB). Free memory was 283.8MB in the beginning and 439.0MB in the end (delta: -155.2MB). Peak memory consumption was 11.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 31.75ms. Allocated memory is still 469.8MB. Free memory was 438.5MB in the beginning and 436.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.07ms. Allocated memory is still 469.8MB. Free memory was 436.9MB in the beginning and 435.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 401.10ms. Allocated memory is still 469.8MB. Free memory was 435.4MB in the beginning and 420.8MB in the end (delta: 14.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 856296.46ms. Allocated memory was 469.8MB in the beginning and 3.3GB in the end (delta: 2.9GB). Free memory was 420.2MB in the beginning and 1.1GB in the end (delta: -701.1MB). Peak memory consumption was 2.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 90]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 128 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 44ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 128 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 44ms.. - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 128 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 44ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 128 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12 for 44ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 185 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 856.1s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 11.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2014 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2014 mSDsluCounter, 1111 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1228 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3285 IncrementalHoareTripleChecker+Invalid, 3327 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 277 mSDtfsCounter, 3285 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1873 GetRequests, 1624 SyntacticMatches, 14 SemanticMatches, 235 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4845occurred in iteration=11, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 2125 NumberOfCodeBlocks, 2115 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 2940 ConstructedInterpolants, 0 QuantifiedInterpolants, 8732 SizeOfPredicates, 56 NumberOfNonLiveVariables, 1947 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 25 InterpolantComputations, 8 PerfectInterpolantSequences, 27/45 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown