/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 18:30:11,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 18:30:11,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 18:30:11,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 18:30:11,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 18:30:12,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 18:30:12,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 18:30:12,006 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 18:30:12,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 18:30:12,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 18:30:12,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 18:30:12,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 18:30:12,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 18:30:12,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 18:30:12,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 18:30:12,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 18:30:12,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 18:30:12,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 18:30:12,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 18:30:12,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 18:30:12,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 18:30:12,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 18:30:12,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 18:30:12,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 18:30:12,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 18:30:12,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 18:30:12,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 18:30:12,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 18:30:12,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 18:30:12,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 18:30:12,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 18:30:12,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 18:30:12,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 18:30:12,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 18:30:12,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 18:30:12,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 18:30:12,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 18:30:12,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 18:30:12,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 18:30:12,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 18:30:12,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 18:30:12,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 18:30:12,070 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 18:30:12,071 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 18:30:12,072 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 18:30:12,072 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 18:30:12,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 18:30:12,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 18:30:12,073 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 18:30:12,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 18:30:12,073 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 18:30:12,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 18:30:12,074 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 18:30:12,074 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 18:30:12,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 18:30:12,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 18:30:12,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 18:30:12,075 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 18:30:12,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 18:30:12,075 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 18:30:12,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 18:30:12,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 18:30:12,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 18:30:12,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 18:30:12,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 18:30:12,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:30:12,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 18:30:12,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 18:30:12,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 18:30:12,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 18:30:12,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 18:30:12,076 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 18:30:12,076 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 18:30:12,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 18:30:12,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 18:30:12,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 18:30:12,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 18:30:12,351 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 18:30:12,351 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 18:30:12,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-12-06 18:30:13,364 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 18:30:13,544 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 18:30:13,544 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-12-06 18:30:13,560 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42501ed84/b4fcf196d26a4f93b7ed05c49b3c6d2a/FLAG0c6a1a035 [2022-12-06 18:30:13,575 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/42501ed84/b4fcf196d26a4f93b7ed05c49b3c6d2a [2022-12-06 18:30:13,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 18:30:13,578 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 18:30:13,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 18:30:13,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 18:30:13,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 18:30:13,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d2ee5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13, skipping insertion in model container [2022-12-06 18:30:13,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 18:30:13,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 18:30:13,731 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:30:13,736 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:30:13,739 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:30:13,740 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:30:13,748 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c[2433,2446] [2022-12-06 18:30:13,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:30:13,766 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 18:30:13,778 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:30:13,780 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:30:13,781 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:30:13,783 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:30:13,791 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c[2433,2446] [2022-12-06 18:30:13,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:30:13,806 INFO L208 MainTranslator]: Completed translation [2022-12-06 18:30:13,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13 WrapperNode [2022-12-06 18:30:13,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 18:30:13,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 18:30:13,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 18:30:13,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 18:30:13,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,848 INFO L138 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 131 [2022-12-06 18:30:13,848 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 18:30:13,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 18:30:13,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 18:30:13,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 18:30:13,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,877 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 18:30:13,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 18:30:13,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 18:30:13,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 18:30:13,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (1/1) ... [2022-12-06 18:30:13,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:30:13,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:30:13,921 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) [2022-12-06 18:30:13,930 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 [2022-12-06 18:30:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 18:30:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 18:30:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 18:30:13,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 18:30:13,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 18:30:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 18:30:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 18:30:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 18:30:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 18:30:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 18:30:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-06 18:30:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 18:30:13,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 18:30:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 18:30:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 18:30:13,955 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 18:30:14,018 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 18:30:14,019 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 18:30:14,216 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 18:30:14,295 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 18:30:14,295 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-06 18:30:14,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:30:14 BoogieIcfgContainer [2022-12-06 18:30:14,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 18:30:14,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 18:30:14,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 18:30:14,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 18:30:14,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:30:13" (1/3) ... [2022-12-06 18:30:14,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb5dcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:30:14, skipping insertion in model container [2022-12-06 18:30:14,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:30:13" (2/3) ... [2022-12-06 18:30:14,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fb5dcd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:30:14, skipping insertion in model container [2022-12-06 18:30:14,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:30:14" (3/3) ... [2022-12-06 18:30:14,303 INFO L112 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-12-06 18:30:14,315 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 18:30:14,315 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 18:30:14,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 18:30:14,364 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-06 18:30:14,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 228 flow [2022-12-06 18:30:14,448 INFO L130 PetriNetUnfolder]: 9/104 cut-off events. [2022-12-06 18:30:14,448 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 18:30:14,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 104 events. 9/104 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2022-12-06 18:30:14,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 106 transitions, 228 flow [2022-12-06 18:30:14,458 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 96 transitions, 204 flow [2022-12-06 18:30:14,473 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 18:30:14,478 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@54dd7d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 18:30:14,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-06 18:30:14,505 INFO L130 PetriNetUnfolder]: 9/95 cut-off events. [2022-12-06 18:30:14,505 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-06 18:30:14,505 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:14,506 INFO L213 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] [2022-12-06 18:30:14,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:14,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:14,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1224862245, now seen corresponding path program 1 times [2022-12-06 18:30:14,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:14,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908826411] [2022-12-06 18:30:14,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:14,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:14,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:30:14,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:14,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908826411] [2022-12-06 18:30:14,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908826411] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:30:14,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:30:14,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-06 18:30:14,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492904665] [2022-12-06 18:30:14,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:30:14,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-06 18:30:14,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:14,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-06 18:30:14,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-06 18:30:14,781 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 106 [2022-12-06 18:30:14,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 96 transitions, 204 flow. Second operand has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:14,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:14,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 106 [2022-12-06 18:30:14,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:30:14,843 INFO L130 PetriNetUnfolder]: 5/92 cut-off events. [2022-12-06 18:30:14,844 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-06 18:30:14,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 92 events. 5/92 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 8/94 useless extension candidates. Maximal degree in co-relation 71. Up to 9 conditions per place. [2022-12-06 18:30:14,845 INFO L137 encePairwiseOnDemand]: 100/106 looper letters, 6 selfloop transitions, 0 changer transitions 3/90 dead transitions. [2022-12-06 18:30:14,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 204 flow [2022-12-06 18:30:14,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-06 18:30:14,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-06 18:30:14,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2022-12-06 18:30:14,858 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9339622641509434 [2022-12-06 18:30:14,861 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 1 predicate places. [2022-12-06 18:30:14,861 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 204 flow [2022-12-06 18:30:14,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:14,862 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:14,862 INFO L213 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] [2022-12-06 18:30:14,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 18:30:14,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash 699401461, now seen corresponding path program 1 times [2022-12-06 18:30:14,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:14,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967713944] [2022-12-06 18:30:14,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:14,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:30:15,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:15,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967713944] [2022-12-06 18:30:15,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967713944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:30:15,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:30:15,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:30:15,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222847920] [2022-12-06 18:30:15,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:30:15,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:30:15,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:15,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:30:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:30:15,215 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 106 [2022-12-06 18:30:15,215 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:15,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:15,216 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 106 [2022-12-06 18:30:15,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:30:15,277 INFO L130 PetriNetUnfolder]: 7/114 cut-off events. [2022-12-06 18:30:15,277 INFO L131 PetriNetUnfolder]: For 31/31 co-relation queries the response was YES. [2022-12-06 18:30:15,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 114 events. 7/114 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 99 event pairs, 0 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 85. Up to 15 conditions per place. [2022-12-06 18:30:15,278 INFO L137 encePairwiseOnDemand]: 98/106 looper letters, 21 selfloop transitions, 2 changer transitions 8/98 dead transitions. [2022-12-06 18:30:15,279 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 98 transitions, 296 flow [2022-12-06 18:30:15,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 18:30:15,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 18:30:15,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 564 transitions. [2022-12-06 18:30:15,282 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7601078167115903 [2022-12-06 18:30:15,283 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 7 predicate places. [2022-12-06 18:30:15,283 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 98 transitions, 296 flow [2022-12-06 18:30:15,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.6) internal successors, (398), 5 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:15,283 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:15,283 INFO L213 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] [2022-12-06 18:30:15,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 18:30:15,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:15,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:15,284 INFO L85 PathProgramCache]: Analyzing trace with hash 108936430, now seen corresponding path program 1 times [2022-12-06 18:30:15,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:15,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392088445] [2022-12-06 18:30:15,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:15,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:15,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:30:15,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:15,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392088445] [2022-12-06 18:30:15,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392088445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:30:15,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:30:15,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-06 18:30:15,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533543413] [2022-12-06 18:30:15,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:30:15,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-06 18:30:15,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:15,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-06 18:30:15,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-06 18:30:15,348 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 106 [2022-12-06 18:30:15,349 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 98 transitions, 296 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:15,349 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:15,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 106 [2022-12-06 18:30:15,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:30:15,370 INFO L130 PetriNetUnfolder]: 8/141 cut-off events. [2022-12-06 18:30:15,370 INFO L131 PetriNetUnfolder]: For 89/93 co-relation queries the response was YES. [2022-12-06 18:30:15,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 141 events. 8/141 cut-off events. For 89/93 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 221 event pairs, 0 based on Foata normal form. 2/133 useless extension candidates. Maximal degree in co-relation 98. Up to 20 conditions per place. [2022-12-06 18:30:15,371 INFO L137 encePairwiseOnDemand]: 103/106 looper letters, 10 selfloop transitions, 2 changer transitions 10/102 dead transitions. [2022-12-06 18:30:15,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 102 transitions, 359 flow [2022-12-06 18:30:15,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-06 18:30:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-06 18:30:15,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 288 transitions. [2022-12-06 18:30:15,372 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9056603773584906 [2022-12-06 18:30:15,373 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2022-12-06 18:30:15,373 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 359 flow [2022-12-06 18:30:15,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:15,373 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:15,373 INFO L213 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] [2022-12-06 18:30:15,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 18:30:15,373 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:15,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:15,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1875259749, now seen corresponding path program 1 times [2022-12-06 18:30:15,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:15,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754811648] [2022-12-06 18:30:15,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:15,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:15,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:30:15,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:15,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754811648] [2022-12-06 18:30:15,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754811648] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:30:15,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:30:15,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 18:30:15,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061518972] [2022-12-06 18:30:15,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:30:15,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 18:30:15,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:15,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 18:30:15,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-06 18:30:15,571 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 106 [2022-12-06 18:30:15,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 359 flow. Second operand has 8 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:15,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:15,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 106 [2022-12-06 18:30:15,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:30:15,689 INFO L130 PetriNetUnfolder]: 8/183 cut-off events. [2022-12-06 18:30:15,690 INFO L131 PetriNetUnfolder]: For 218/239 co-relation queries the response was YES. [2022-12-06 18:30:15,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 183 events. 8/183 cut-off events. For 218/239 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 401 event pairs, 0 based on Foata normal form. 9/179 useless extension candidates. Maximal degree in co-relation 154. Up to 24 conditions per place. [2022-12-06 18:30:15,692 INFO L137 encePairwiseOnDemand]: 95/106 looper letters, 21 selfloop transitions, 10 changer transitions 15/111 dead transitions. [2022-12-06 18:30:15,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 111 transitions, 491 flow [2022-12-06 18:30:15,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 18:30:15,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 18:30:15,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 733 transitions. [2022-12-06 18:30:15,695 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7683438155136268 [2022-12-06 18:30:15,696 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 17 predicate places. [2022-12-06 18:30:15,697 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 111 transitions, 491 flow [2022-12-06 18:30:15,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:15,698 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:15,698 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:30:15,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 18:30:15,698 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:15,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:15,698 INFO L85 PathProgramCache]: Analyzing trace with hash 267608171, now seen corresponding path program 1 times [2022-12-06 18:30:15,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:15,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444473369] [2022-12-06 18:30:15,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:15,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:16,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:30:16,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:16,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444473369] [2022-12-06 18:30:16,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444473369] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:30:16,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43354650] [2022-12-06 18:30:16,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:16,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:16,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:30:16,145 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) [2022-12-06 18:30:16,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 18:30:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:16,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 26 conjunts are in the unsatisfiable core [2022-12-06 18:30:16,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:30:16,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-06 18:30:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:30:16,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:30:16,638 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-06 18:30:16,639 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 13 [2022-12-06 18:30:16,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:30:16,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43354650] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:30:16,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:30:16,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 7] total 15 [2022-12-06 18:30:16,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576445198] [2022-12-06 18:30:16,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:30:16,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-06 18:30:16,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:16,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-06 18:30:16,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-12-06 18:30:16,703 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 106 [2022-12-06 18:30:16,704 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 111 transitions, 491 flow. Second operand has 15 states, 15 states have (on average 60.733333333333334) internal successors, (911), 15 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:16,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:16,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 106 [2022-12-06 18:30:16,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:30:16,984 INFO L130 PetriNetUnfolder]: 28/285 cut-off events. [2022-12-06 18:30:16,984 INFO L131 PetriNetUnfolder]: For 464/470 co-relation queries the response was YES. [2022-12-06 18:30:16,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696 conditions, 285 events. 28/285 cut-off events. For 464/470 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 968 event pairs, 0 based on Foata normal form. 2/265 useless extension candidates. Maximal degree in co-relation 250. Up to 50 conditions per place. [2022-12-06 18:30:16,986 INFO L137 encePairwiseOnDemand]: 87/106 looper letters, 46 selfloop transitions, 15 changer transitions 30/141 dead transitions. [2022-12-06 18:30:16,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 141 transitions, 842 flow [2022-12-06 18:30:16,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-06 18:30:16,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-06 18:30:16,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1486 transitions. [2022-12-06 18:30:16,989 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5607547169811321 [2022-12-06 18:30:16,990 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 41 predicate places. [2022-12-06 18:30:16,990 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 141 transitions, 842 flow [2022-12-06 18:30:16,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 60.733333333333334) internal successors, (911), 15 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:16,990 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:16,990 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:30:17,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 18:30:17,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:17,213 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:17,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:17,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1012362811, now seen corresponding path program 2 times [2022-12-06 18:30:17,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:17,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382884784] [2022-12-06 18:30:17,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:17,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:30:17,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:17,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382884784] [2022-12-06 18:30:17,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382884784] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:30:17,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679808925] [2022-12-06 18:30:17,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 18:30:17,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:17,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:30:17,717 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) [2022-12-06 18:30:17,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 18:30:17,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:30:17,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:30:17,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-06 18:30:17,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:30:18,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-06 18:30:18,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:30:18,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 18:30:18,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-06 18:30:18,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-06 18:30:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:30:18,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:30:18,370 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_92 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_92) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))))) is different from false [2022-12-06 18:30:18,643 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:18,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2022-12-06 18:30:18,650 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:18,650 INFO L350 Elim1Store]: Elim1 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 184 treesize of output 167 [2022-12-06 18:30:18,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 106 [2022-12-06 18:30:18,662 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:18,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 122 [2022-12-06 18:30:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:30:18,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679808925] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:30:18,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:30:18,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 16] total 37 [2022-12-06 18:30:18,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022816863] [2022-12-06 18:30:18,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:30:18,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-06 18:30:18,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:18,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-06 18:30:18,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=1087, Unknown=17, NotChecked=68, Total=1332 [2022-12-06 18:30:18,881 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 106 [2022-12-06 18:30:18,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 141 transitions, 842 flow. Second operand has 37 states, 37 states have (on average 47.270270270270274) internal successors, (1749), 37 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:18,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:18,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 106 [2022-12-06 18:30:18,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:30:21,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:30:22,519 INFO L130 PetriNetUnfolder]: 44/382 cut-off events. [2022-12-06 18:30:22,519 INFO L131 PetriNetUnfolder]: For 913/934 co-relation queries the response was YES. [2022-12-06 18:30:22,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1117 conditions, 382 events. 44/382 cut-off events. For 913/934 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1644 event pairs, 0 based on Foata normal form. 5/356 useless extension candidates. Maximal degree in co-relation 446. Up to 74 conditions per place. [2022-12-06 18:30:22,521 INFO L137 encePairwiseOnDemand]: 80/106 looper letters, 60 selfloop transitions, 28 changer transitions 52/179 dead transitions. [2022-12-06 18:30:22,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 179 transitions, 1412 flow [2022-12-06 18:30:22,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-06 18:30:22,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-12-06 18:30:22,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 1759 transitions. [2022-12-06 18:30:22,528 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.44849566547679753 [2022-12-06 18:30:22,528 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 77 predicate places. [2022-12-06 18:30:22,528 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 179 transitions, 1412 flow [2022-12-06 18:30:22,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 47.270270270270274) internal successors, (1749), 37 states have internal predecessors, (1749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:22,529 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:22,529 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:30:22,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 18:30:22,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-06 18:30:22,736 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:22,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:22,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2118727370, now seen corresponding path program 3 times [2022-12-06 18:30:22,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:22,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192496631] [2022-12-06 18:30:22,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:22,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:22,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-06 18:30:22,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:22,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192496631] [2022-12-06 18:30:22,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192496631] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:30:22,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665381656] [2022-12-06 18:30:22,812 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 18:30:22,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:22,812 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:30:22,813 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) [2022-12-06 18:30:22,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 18:30:22,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-06 18:30:22,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:30:22,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 49 conjunts are in the unsatisfiable core [2022-12-06 18:30:22,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:30:23,206 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-06 18:30:23,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:30:23,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 18:30:23,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-06 18:30:23,541 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-06 18:30:23,541 INFO L350 Elim1Store]: Elim1 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 19 treesize of output 10 [2022-12-06 18:30:23,609 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 18:30:23,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:30:23,743 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_120 (Array Int Int)) (~front~0 Int)) (or (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_120) c_~queue~0.base) (+ c_~queue~0.offset (* ~front~0 4)))) (<= c_~n~0 ~front~0) (< ~front~0 0))) is different from false [2022-12-06 18:30:23,916 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_119 (Array Int Int)) (v_ArrVal_120 (Array Int Int)) (v_~front~0_64 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_119))) (or (< v_~front~0_64 0) (<= c_~n~0 v_~front~0_64) (not (= 5 (select (select .cse0 |c_ULTIMATE.start_main_#t~ret9#1.base|) (+ (* c_~size~0 4) (* c_~front~0 4) |c_ULTIMATE.start_main_#t~ret9#1.offset|)))) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_120) |c_ULTIMATE.start_main_#t~ret9#1.base|) (+ |c_ULTIMATE.start_main_#t~ret9#1.offset| (* v_~front~0_64 4))) 5)))) is different from false [2022-12-06 18:30:23,929 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_119 (Array Int Int)) (v_ArrVal_120 (Array Int Int)) (v_~front~0_64 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_119))) (or (= 5 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_120) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| (* v_~front~0_64 4)))) (< v_~front~0_64 0) (<= c_~n~0 v_~front~0_64) (not (= 5 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ (* c_~size~0 4) (* c_~front~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))))))) is different from false [2022-12-06 18:30:23,953 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_119 (Array Int Int)) (v_ArrVal_120 (Array Int Int)) (v_~front~0_64 Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_119))) (or (< v_~front~0_64 0) (<= c_~n~0 v_~front~0_64) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_120) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* v_~front~0_64 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5) (not (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* c_~size~0 4) (* c_~front~0 4) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 5))))) is different from false [2022-12-06 18:30:24,147 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:24,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2022-12-06 18:30:24,156 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:24,156 INFO L350 Elim1Store]: Elim1 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 106 treesize of output 103 [2022-12-06 18:30:24,168 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:24,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 61 [2022-12-06 18:30:24,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2022-12-06 18:30:24,803 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 18:30:24,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665381656] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:30:24,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:30:24,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 23, 23] total 43 [2022-12-06 18:30:24,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851713077] [2022-12-06 18:30:24,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:30:24,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-06 18:30:24,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:24,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-06 18:30:24,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1274, Unknown=7, NotChecked=308, Total=1806 [2022-12-06 18:30:24,806 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 106 [2022-12-06 18:30:24,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 179 transitions, 1412 flow. Second operand has 43 states, 43 states have (on average 42.395348837209305) internal successors, (1823), 43 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:24,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:24,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 106 [2022-12-06 18:30:24,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:30:35,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2022-12-06 18:30:37,085 INFO L130 PetriNetUnfolder]: 115/971 cut-off events. [2022-12-06 18:30:37,085 INFO L131 PetriNetUnfolder]: For 3633/3747 co-relation queries the response was YES. [2022-12-06 18:30:37,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3300 conditions, 971 events. 115/971 cut-off events. For 3633/3747 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 6811 event pairs, 0 based on Foata normal form. 60/950 useless extension candidates. Maximal degree in co-relation 810. Up to 205 conditions per place. [2022-12-06 18:30:37,090 INFO L137 encePairwiseOnDemand]: 74/106 looper letters, 96 selfloop transitions, 37 changer transitions 210/377 dead transitions. [2022-12-06 18:30:37,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 377 transitions, 4145 flow [2022-12-06 18:30:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-06 18:30:37,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-12-06 18:30:37,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 2541 transitions. [2022-12-06 18:30:37,095 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.39952830188679245 [2022-12-06 18:30:37,095 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 136 predicate places. [2022-12-06 18:30:37,095 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 377 transitions, 4145 flow [2022-12-06 18:30:37,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 42.395348837209305) internal successors, (1823), 43 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:37,096 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:37,096 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:30:37,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 18:30:37,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:37,297 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:37,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:37,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1117027509, now seen corresponding path program 4 times [2022-12-06 18:30:37,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:37,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771205171] [2022-12-06 18:30:37,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:37,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 18:30:37,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:37,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771205171] [2022-12-06 18:30:37,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771205171] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:30:37,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395714048] [2022-12-06 18:30:37,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 18:30:37,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:37,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:30:37,784 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) [2022-12-06 18:30:37,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 18:30:37,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 18:30:37,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:30:37,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-06 18:30:37,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:30:38,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-06 18:30:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 18:30:38,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:30:38,153 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-06 18:30:38,154 INFO L350 Elim1Store]: Elim1 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 13 [2022-12-06 18:30:38,230 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 18:30:38,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395714048] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:30:38,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:30:38,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 9] total 22 [2022-12-06 18:30:38,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153025652] [2022-12-06 18:30:38,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:30:38,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 18:30:38,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:38,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 18:30:38,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2022-12-06 18:30:38,233 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 106 [2022-12-06 18:30:38,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 377 transitions, 4145 flow. Second operand has 22 states, 22 states have (on average 60.27272727272727) internal successors, (1326), 22 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:38,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:38,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 106 [2022-12-06 18:30:38,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:30:39,352 INFO L130 PetriNetUnfolder]: 213/1615 cut-off events. [2022-12-06 18:30:39,352 INFO L131 PetriNetUnfolder]: For 6971/7193 co-relation queries the response was YES. [2022-12-06 18:30:39,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6404 conditions, 1615 events. 213/1615 cut-off events. For 6971/7193 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 13849 event pairs, 0 based on Foata normal form. 60/1547 useless extension candidates. Maximal degree in co-relation 1490. Up to 395 conditions per place. [2022-12-06 18:30:39,359 INFO L137 encePairwiseOnDemand]: 87/106 looper letters, 94 selfloop transitions, 37 changer transitions 418/603 dead transitions. [2022-12-06 18:30:39,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 603 transitions, 8094 flow [2022-12-06 18:30:39,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-12-06 18:30:39,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-12-06 18:30:39,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 3404 transitions. [2022-12-06 18:30:39,364 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5633896060906984 [2022-12-06 18:30:39,366 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 192 predicate places. [2022-12-06 18:30:39,366 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 603 transitions, 8094 flow [2022-12-06 18:30:39,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 60.27272727272727) internal successors, (1326), 22 states have internal predecessors, (1326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:39,367 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:39,367 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:30:39,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-06 18:30:39,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:39,572 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:39,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:39,573 INFO L85 PathProgramCache]: Analyzing trace with hash 855349215, now seen corresponding path program 5 times [2022-12-06 18:30:39,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:39,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583123479] [2022-12-06 18:30:39,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:39,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:40,266 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 18:30:40,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:40,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583123479] [2022-12-06 18:30:40,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583123479] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:30:40,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932936946] [2022-12-06 18:30:40,267 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 18:30:40,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:40,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:30:40,275 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) [2022-12-06 18:30:40,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 18:30:40,347 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-06 18:30:40,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:30:40,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 56 conjunts are in the unsatisfiable core [2022-12-06 18:30:40,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:30:40,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:30:40,507 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-12-06 18:30:40,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-12-06 18:30:40,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-12-06 18:30:40,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:30:41,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-12-06 18:30:41,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 18:30:41,230 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:41,230 INFO L350 Elim1Store]: Elim1 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 10 [2022-12-06 18:30:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:30:41,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:30:41,595 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_~size~0_87 Int) (v_ArrVal_180 (Array Int Int)) (v_ArrVal_181 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_180)) (.cse1 (* c_~front~0 4))) (or (not (= (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ .cse1 (* v_~size~0_87 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) 5)) (= (select (select (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_181) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) (+ .cse1 |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset| 4)) 5) (not (<= v_~size~0_87 (+ c_~size~0 1))) (< v_~size~0_87 1)))) is different from false [2022-12-06 18:30:41,701 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:41,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 49 [2022-12-06 18:30:41,708 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:41,708 INFO L350 Elim1Store]: Elim1 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 192 treesize of output 173 [2022-12-06 18:30:41,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 108 [2022-12-06 18:30:41,728 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:41,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 122 [2022-12-06 18:30:42,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-12-06 18:30:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 18:30:42,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932936946] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:30:42,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:30:42,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 18] total 46 [2022-12-06 18:30:42,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870172365] [2022-12-06 18:30:42,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:30:42,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-06 18:30:42,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:42,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-06 18:30:42,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=1676, Unknown=9, NotChecked=86, Total=2070 [2022-12-06 18:30:42,177 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 106 [2022-12-06 18:30:42,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 603 transitions, 8094 flow. Second operand has 46 states, 46 states have (on average 40.32608695652174) internal successors, (1855), 46 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:42,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:42,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 106 [2022-12-06 18:30:42,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:30:46,094 INFO L130 PetriNetUnfolder]: 511/3709 cut-off events. [2022-12-06 18:30:46,095 INFO L131 PetriNetUnfolder]: For 21299/21923 co-relation queries the response was YES. [2022-12-06 18:30:46,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16440 conditions, 3709 events. 511/3709 cut-off events. For 21299/21923 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 38411 event pairs, 0 based on Foata normal form. 148/3559 useless extension candidates. Maximal degree in co-relation 3578. Up to 1077 conditions per place. [2022-12-06 18:30:46,110 INFO L137 encePairwiseOnDemand]: 82/106 looper letters, 216 selfloop transitions, 86 changer transitions 968/1302 dead transitions. [2022-12-06 18:30:46,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 1302 transitions, 20828 flow [2022-12-06 18:30:46,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-12-06 18:30:46,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-12-06 18:30:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 3073 transitions. [2022-12-06 18:30:46,121 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.38145481628599803 [2022-12-06 18:30:46,122 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 267 predicate places. [2022-12-06 18:30:46,122 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 1302 transitions, 20828 flow [2022-12-06 18:30:46,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 40.32608695652174) internal successors, (1855), 46 states have internal predecessors, (1855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:46,124 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:46,124 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:30:46,130 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-06 18:30:46,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:46,330 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:46,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:46,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1936419885, now seen corresponding path program 6 times [2022-12-06 18:30:46,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:46,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673017323] [2022-12-06 18:30:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:46,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:46,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:46,614 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-06 18:30:46,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:46,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673017323] [2022-12-06 18:30:46,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673017323] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:30:46,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596400652] [2022-12-06 18:30:46,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 18:30:46,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:46,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:30:46,624 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) [2022-12-06 18:30:46,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 18:30:47,036 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-12-06 18:30:47,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:30:47,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-06 18:30:47,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:30:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-06 18:30:47,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:30:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-06 18:30:47,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596400652] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:30:47,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:30:47,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2022-12-06 18:30:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453493588] [2022-12-06 18:30:47,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:30:47,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-06 18:30:47,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:47,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-06 18:30:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1049, Unknown=0, NotChecked=0, Total=1332 [2022-12-06 18:30:47,748 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 106 [2022-12-06 18:30:47,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 1302 transitions, 20828 flow. Second operand has 37 states, 37 states have (on average 78.24324324324324) internal successors, (2895), 37 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:47,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:47,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 106 [2022-12-06 18:30:47,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:30:48,742 INFO L130 PetriNetUnfolder]: 317/2612 cut-off events. [2022-12-06 18:30:48,743 INFO L131 PetriNetUnfolder]: For 17747/18114 co-relation queries the response was YES. [2022-12-06 18:30:48,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11662 conditions, 2612 events. 317/2612 cut-off events. For 17747/18114 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 24137 event pairs, 0 based on Foata normal form. 85/2476 useless extension candidates. Maximal degree in co-relation 3726. Up to 638 conditions per place. [2022-12-06 18:30:48,757 INFO L137 encePairwiseOnDemand]: 92/106 looper letters, 156 selfloop transitions, 27 changer transitions 454/793 dead transitions. [2022-12-06 18:30:48,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 793 transitions, 13338 flow [2022-12-06 18:30:48,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-06 18:30:48,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-06 18:30:48,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2142 transitions. [2022-12-06 18:30:48,775 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7484276729559748 [2022-12-06 18:30:48,776 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 293 predicate places. [2022-12-06 18:30:48,776 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 793 transitions, 13338 flow [2022-12-06 18:30:48,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 78.24324324324324) internal successors, (2895), 37 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:48,777 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:48,777 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:30:48,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-06 18:30:48,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:48,983 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:48,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:48,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1273985823, now seen corresponding path program 7 times [2022-12-06 18:30:48,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:48,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851472400] [2022-12-06 18:30:48,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:48,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:30:49,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:49,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851472400] [2022-12-06 18:30:49,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851472400] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:30:49,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522102394] [2022-12-06 18:30:49,657 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 18:30:49,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:49,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:30:49,668 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) [2022-12-06 18:30:49,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 18:30:49,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:49,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-06 18:30:49,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:30:50,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-06 18:30:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 18:30:50,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:30:50,250 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-06 18:30:50,250 INFO L350 Elim1Store]: Elim1 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 13 [2022-12-06 18:30:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-06 18:30:50,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522102394] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:30:50,389 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:30:50,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 11] total 30 [2022-12-06 18:30:50,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094756673] [2022-12-06 18:30:50,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:30:50,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-12-06 18:30:50,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:50,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-12-06 18:30:50,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-12-06 18:30:50,392 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2022-12-06 18:30:50,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 793 transitions, 13338 flow. Second operand has 30 states, 30 states have (on average 53.666666666666664) internal successors, (1610), 30 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:50,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:50,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2022-12-06 18:30:50,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:30:53,631 INFO L130 PetriNetUnfolder]: 613/4607 cut-off events. [2022-12-06 18:30:53,631 INFO L131 PetriNetUnfolder]: For 39393/40252 co-relation queries the response was YES. [2022-12-06 18:30:53,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22773 conditions, 4607 events. 613/4607 cut-off events. For 39393/40252 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 48451 event pairs, 0 based on Foata normal form. 174/4389 useless extension candidates. Maximal degree in co-relation 9409. Up to 1417 conditions per place. [2022-12-06 18:30:53,651 INFO L137 encePairwiseOnDemand]: 83/106 looper letters, 334 selfloop transitions, 191 changer transitions 865/1431 dead transitions. [2022-12-06 18:30:53,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1431 transitions, 27147 flow [2022-12-06 18:30:53,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2022-12-06 18:30:53,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2022-12-06 18:30:53,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 7418 transitions. [2022-12-06 18:30:53,658 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5071096527208094 [2022-12-06 18:30:53,658 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 430 predicate places. [2022-12-06 18:30:53,658 INFO L495 AbstractCegarLoop]: Abstraction has has 524 places, 1431 transitions, 27147 flow [2022-12-06 18:30:53,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 53.666666666666664) internal successors, (1610), 30 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:53,659 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:30:53,659 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:30:53,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-06 18:30:53,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:53,864 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:30:53,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:30:53,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1143307963, now seen corresponding path program 8 times [2022-12-06 18:30:53,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:30:53,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858002408] [2022-12-06 18:30:53,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:30:53,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:30:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:30:54,754 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:30:54,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:30:54,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858002408] [2022-12-06 18:30:54,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858002408] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:30:54,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654297063] [2022-12-06 18:30:54,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 18:30:54,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:30:54,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:30:54,756 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) [2022-12-06 18:30:54,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-06 18:30:54,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:30:54,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:30:54,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 35 conjunts are in the unsatisfiable core [2022-12-06 18:30:54,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:30:55,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 18:30:55,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-06 18:30:55,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-06 18:30:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-06 18:30:55,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:30:55,522 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_274 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_274) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)))) is different from false [2022-12-06 18:30:55,535 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:30:55,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 37 [2022-12-06 18:30:55,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-12-06 18:30:55,877 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-06 18:30:55,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654297063] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:30:55,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:30:55,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19, 18] total 49 [2022-12-06 18:30:55,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337534776] [2022-12-06 18:30:55,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:30:55,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-06 18:30:55,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:30:55,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-06 18:30:55,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2068, Unknown=1, NotChecked=92, Total=2352 [2022-12-06 18:30:55,881 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 106 [2022-12-06 18:30:55,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 524 places, 1431 transitions, 27147 flow. Second operand has 49 states, 49 states have (on average 44.02040816326531) internal successors, (2157), 49 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:30:55,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:30:55,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 106 [2022-12-06 18:30:55,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:31:00,425 INFO L130 PetriNetUnfolder]: 768/5187 cut-off events. [2022-12-06 18:31:00,426 INFO L131 PetriNetUnfolder]: For 55838/57811 co-relation queries the response was YES. [2022-12-06 18:31:00,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28629 conditions, 5187 events. 768/5187 cut-off events. For 55838/57811 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 55632 event pairs, 0 based on Foata normal form. 397/5150 useless extension candidates. Maximal degree in co-relation 11914. Up to 1702 conditions per place. [2022-12-06 18:31:00,450 INFO L137 encePairwiseOnDemand]: 81/106 looper letters, 372 selfloop transitions, 306 changer transitions 928/1641 dead transitions. [2022-12-06 18:31:00,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 1641 transitions, 34718 flow [2022-12-06 18:31:00,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-12-06 18:31:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2022-12-06 18:31:00,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 4210 transitions. [2022-12-06 18:31:00,454 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.41807348560079444 [2022-12-06 18:31:00,455 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 524 predicate places. [2022-12-06 18:31:00,455 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 1641 transitions, 34718 flow [2022-12-06 18:31:00,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 44.02040816326531) internal successors, (2157), 49 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:31:00,456 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:31:00,456 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:31:00,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-06 18:31:00,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-06 18:31:00,661 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:31:00,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:31:00,661 INFO L85 PathProgramCache]: Analyzing trace with hash 2028521200, now seen corresponding path program 9 times [2022-12-06 18:31:00,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:31:00,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565649626] [2022-12-06 18:31:00,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:31:00,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:31:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:31:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-06 18:31:00,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:31:00,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565649626] [2022-12-06 18:31:00,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565649626] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:31:00,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209894181] [2022-12-06 18:31:00,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 18:31:00,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:31:00,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:31:00,771 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:31:00,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-06 18:31:00,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-06 18:31:00,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:31:00,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 61 conjunts are in the unsatisfiable core [2022-12-06 18:31:00,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:31:01,636 INFO L321 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2022-12-06 18:31:01,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 13 [2022-12-06 18:31:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 9 proven. 40 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 18:31:01,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:31:01,964 INFO L321 Elim1Store]: treesize reduction 10, result has 70.6 percent of original size [2022-12-06 18:31:01,964 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 35 [2022-12-06 18:31:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 48 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-06 18:31:02,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209894181] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:31:02,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:31:02,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 26, 21] total 46 [2022-12-06 18:31:02,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221841142] [2022-12-06 18:31:02,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:31:02,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-12-06 18:31:02,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:31:02,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-12-06 18:31:02,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1722, Unknown=0, NotChecked=0, Total=2070 [2022-12-06 18:31:02,708 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 106 [2022-12-06 18:31:02,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 1641 transitions, 34718 flow. Second operand has 46 states, 46 states have (on average 49.67391304347826) internal successors, (2285), 46 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:31:02,710 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:31:02,710 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 106 [2022-12-06 18:31:02,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:31:13,213 INFO L130 PetriNetUnfolder]: 2466/15782 cut-off events. [2022-12-06 18:31:13,213 INFO L131 PetriNetUnfolder]: For 209062/214743 co-relation queries the response was YES. [2022-12-06 18:31:13,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97060 conditions, 15782 events. 2466/15782 cut-off events. For 209062/214743 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 215091 event pairs, 0 based on Foata normal form. 1127/15632 useless extension candidates. Maximal degree in co-relation 26831. Up to 5966 conditions per place. [2022-12-06 18:31:13,291 INFO L137 encePairwiseOnDemand]: 77/106 looper letters, 805 selfloop transitions, 584 changer transitions 3861/5287 dead transitions. [2022-12-06 18:31:13,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 5287 transitions, 123614 flow [2022-12-06 18:31:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 205 states. [2022-12-06 18:31:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2022-12-06 18:31:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 10174 transitions. [2022-12-06 18:31:13,301 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.46820064427059366 [2022-12-06 18:31:13,302 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 728 predicate places. [2022-12-06 18:31:13,302 INFO L495 AbstractCegarLoop]: Abstraction has has 822 places, 5287 transitions, 123614 flow [2022-12-06 18:31:13,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 49.67391304347826) internal successors, (2285), 46 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:31:13,303 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:31:13,303 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:31:13,308 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-06 18:31:13,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-06 18:31:13,508 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:31:13,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:31:13,509 INFO L85 PathProgramCache]: Analyzing trace with hash -347427239, now seen corresponding path program 10 times [2022-12-06 18:31:13,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:31:13,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929608554] [2022-12-06 18:31:13,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:31:13,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:31:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:31:13,859 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-06 18:31:13,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:31:13,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929608554] [2022-12-06 18:31:13,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929608554] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:31:13,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426214704] [2022-12-06 18:31:13,860 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 18:31:13,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:31:13,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:31:13,876 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:31:13,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-06 18:31:13,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 18:31:13,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:31:13,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-06 18:31:13,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:31:14,408 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 32 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-06 18:31:14,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:31:14,843 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 23 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-06 18:31:14,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426214704] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:31:14,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:31:14,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-12-06 18:31:14,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882538931] [2022-12-06 18:31:14,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:31:14,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-06 18:31:14,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:31:14,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-06 18:31:14,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=1879, Unknown=0, NotChecked=0, Total=2352 [2022-12-06 18:31:14,846 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 106 [2022-12-06 18:31:14,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 822 places, 5287 transitions, 123614 flow. Second operand has 49 states, 49 states have (on average 78.12244897959184) internal successors, (3828), 49 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:31:14,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:31:14,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 106 [2022-12-06 18:31:14,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:31:22,832 INFO L130 PetriNetUnfolder]: 1723/11951 cut-off events. [2022-12-06 18:31:22,832 INFO L131 PetriNetUnfolder]: For 176034/179925 co-relation queries the response was YES. [2022-12-06 18:31:22,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74303 conditions, 11951 events. 1723/11951 cut-off events. For 176034/179925 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 153328 event pairs, 0 based on Foata normal form. 452/11404 useless extension candidates. Maximal degree in co-relation 26002. Up to 4202 conditions per place. [2022-12-06 18:31:22,890 INFO L137 encePairwiseOnDemand]: 92/106 looper letters, 830 selfloop transitions, 36 changer transitions 2401/3814 dead transitions. [2022-12-06 18:31:22,891 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 852 places, 3814 transitions, 92295 flow [2022-12-06 18:31:22,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-06 18:31:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-12-06 18:31:22,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3252 transitions. [2022-12-06 18:31:22,893 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7482742751955821 [2022-12-06 18:31:22,893 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 758 predicate places. [2022-12-06 18:31:22,894 INFO L495 AbstractCegarLoop]: Abstraction has has 852 places, 3814 transitions, 92295 flow [2022-12-06 18:31:22,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 78.12244897959184) internal successors, (3828), 49 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:31:22,895 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:31:22,895 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:31:22,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-06 18:31:23,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-06 18:31:23,100 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:31:23,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:31:23,100 INFO L85 PathProgramCache]: Analyzing trace with hash 623125387, now seen corresponding path program 11 times [2022-12-06 18:31:23,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:31:23,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043324745] [2022-12-06 18:31:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:31:23,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:31:23,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:31:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:31:23,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:31:23,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043324745] [2022-12-06 18:31:23,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043324745] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:31:23,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584664839] [2022-12-06 18:31:23,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 18:31:23,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:31:23,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:31:23,922 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:31:23,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-06 18:31:24,010 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-12-06 18:31:24,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:31:24,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-06 18:31:24,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:31:24,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-06 18:31:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 18:31:24,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:31:24,581 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-06 18:31:24,581 INFO L350 Elim1Store]: Elim1 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 13 [2022-12-06 18:31:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-06 18:31:24,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584664839] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:31:24,724 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:31:24,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 12] total 37 [2022-12-06 18:31:24,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166985093] [2022-12-06 18:31:24,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:31:24,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-06 18:31:24,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:31:24,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-06 18:31:24,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2022-12-06 18:31:24,727 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2022-12-06 18:31:24,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 3814 transitions, 92295 flow. Second operand has 37 states, 37 states have (on average 53.270270270270274) internal successors, (1971), 37 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:31:24,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:31:24,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2022-12-06 18:31:24,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:31:36,668 INFO L130 PetriNetUnfolder]: 2148/14472 cut-off events. [2022-12-06 18:31:36,668 INFO L131 PetriNetUnfolder]: For 244741/250611 co-relation queries the response was YES. [2022-12-06 18:31:36,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97333 conditions, 14472 events. 2148/14472 cut-off events. For 244741/250611 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 193109 event pairs, 0 based on Foata normal form. 926/14207 useless extension candidates. Maximal degree in co-relation 34918. Up to 5290 conditions per place. [2022-12-06 18:31:36,777 INFO L137 encePairwiseOnDemand]: 83/106 looper letters, 883 selfloop transitions, 710 changer transitions 3022/4656 dead transitions. [2022-12-06 18:31:36,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1101 places, 4656 transitions, 121935 flow [2022-12-06 18:31:36,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 250 states. [2022-12-06 18:31:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2022-12-06 18:31:36,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 13477 transitions. [2022-12-06 18:31:36,787 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5085660377358491 [2022-12-06 18:31:36,788 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 1007 predicate places. [2022-12-06 18:31:36,788 INFO L495 AbstractCegarLoop]: Abstraction has has 1101 places, 4656 transitions, 121935 flow [2022-12-06 18:31:36,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 53.270270270270274) internal successors, (1971), 37 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:31:36,788 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:31:36,789 INFO L213 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:31:36,808 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-06 18:31:36,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-06 18:31:36,995 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:31:36,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:31:36,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2076498101, now seen corresponding path program 12 times [2022-12-06 18:31:36,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:31:36,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337923901] [2022-12-06 18:31:36,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:31:36,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:31:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:31:37,726 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:31:37,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:31:37,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337923901] [2022-12-06 18:31:37,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337923901] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:31:37,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309668026] [2022-12-06 18:31:37,726 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 18:31:37,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:31:37,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:31:37,728 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:31:37,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-06 18:31:37,900 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-12-06 18:31:37,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:31:37,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 62 conjunts are in the unsatisfiable core [2022-12-06 18:31:37,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:31:38,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-06 18:31:38,683 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:31:38,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-06 18:31:49,763 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-06 18:31:49,763 INFO L350 Elim1Store]: Elim1 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 27 treesize of output 10 [2022-12-06 18:31:49,775 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 2 proven. 64 refuted. 18 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-06 18:31:49,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:31:51,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:31:51,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 52 [2022-12-06 18:31:51,038 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-06 18:31:51,038 INFO L350 Elim1Store]: Elim1 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 332 treesize of output 297 [2022-12-06 18:31:51,044 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-06 18:31:51,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 193 [2022-12-06 18:31:51,052 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-12-06 18:31:51,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 196 [2022-12-06 18:31:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-06 18:31:51,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309668026] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:31:51,692 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:31:51,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 31, 28] total 75 [2022-12-06 18:31:51,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383766566] [2022-12-06 18:31:51,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:31:51,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-12-06 18:31:51,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:31:51,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-12-06 18:31:51,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=4874, Unknown=51, NotChecked=0, Total=5550 [2022-12-06 18:31:51,695 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 106 [2022-12-06 18:31:51,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1101 places, 4656 transitions, 121935 flow. Second operand has 75 states, 75 states have (on average 41.666666666666664) internal successors, (3125), 75 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:31:51,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:31:51,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 106 [2022-12-06 18:31:51,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:32:03,247 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 79 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:32:14,979 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 75 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:32:27,615 WARN L233 SmtUtils]: Spent 12.11s on a formula simplification. DAG size of input: 83 DAG size of output: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:32:38,062 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 80 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:32:51,324 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 71 DAG size of output: 70 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:33:05,225 WARN L233 SmtUtils]: Spent 13.83s on a formula simplification. DAG size of input: 84 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:33:17,812 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 83 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:33:28,628 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 75 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:33:42,971 WARN L233 SmtUtils]: Spent 14.16s on a formula simplification. DAG size of input: 80 DAG size of output: 69 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:33:59,327 WARN L233 SmtUtils]: Spent 16.14s on a formula simplification. DAG size of input: 88 DAG size of output: 85 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:34:09,625 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 81 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:34:17,938 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 70 DAG size of output: 69 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:34:30,125 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 83 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:34:38,747 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 83 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:34:47,095 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 77 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:34:55,559 WARN L233 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 74 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:35:12,538 WARN L233 SmtUtils]: Spent 12.11s on a formula simplification. DAG size of input: 79 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:35:26,077 WARN L233 SmtUtils]: Spent 9.18s on a formula simplification. DAG size of input: 88 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:35:34,420 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 82 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:35:43,408 WARN L233 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 87 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:35:54,391 WARN L233 SmtUtils]: Spent 10.76s on a formula simplification. DAG size of input: 82 DAG size of output: 80 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:36:00,767 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 84 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:36:09,541 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 78 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:36:28,655 WARN L233 SmtUtils]: Spent 18.58s on a formula simplification. DAG size of input: 92 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:36:37,010 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 80 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:36:43,679 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 73 DAG size of output: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:36:55,920 WARN L233 SmtUtils]: Spent 8.15s on a formula simplification. DAG size of input: 86 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:37:06,506 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 81 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:37:23,157 WARN L233 SmtUtils]: Spent 12.13s on a formula simplification. DAG size of input: 88 DAG size of output: 84 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:37:37,285 WARN L233 SmtUtils]: Spent 6.48s on a formula simplification. DAG size of input: 82 DAG size of output: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:37:44,398 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 77 DAG size of output: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:37:56,920 WARN L233 SmtUtils]: Spent 12.12s on a formula simplification. DAG size of input: 84 DAG size of output: 82 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:38:15,308 WARN L233 SmtUtils]: Spent 12.94s on a formula simplification. DAG size of input: 90 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:38:28,051 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 72 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:38:44,995 WARN L233 SmtUtils]: Spent 8.86s on a formula simplification. DAG size of input: 85 DAG size of output: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:39:01,780 WARN L233 SmtUtils]: Spent 16.15s on a formula simplification. DAG size of input: 92 DAG size of output: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:39:12,493 WARN L233 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 74 DAG size of output: 73 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:39:26,689 WARN L233 SmtUtils]: Spent 12.13s on a formula simplification. DAG size of input: 87 DAG size of output: 83 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:39:35,573 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 76 DAG size of output: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:39:47,327 WARN L233 SmtUtils]: Spent 9.64s on a formula simplification. DAG size of input: 81 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:39:56,895 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 78 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:40:09,106 WARN L233 SmtUtils]: Spent 12.13s on a formula simplification. DAG size of input: 83 DAG size of output: 81 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:40:24,470 WARN L233 SmtUtils]: Spent 14.21s on a formula simplification. DAG size of input: 84 DAG size of output: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:40:48,622 WARN L233 SmtUtils]: Spent 22.06s on a formula simplification. DAG size of input: 90 DAG size of output: 77 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:40:58,062 WARN L233 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 86 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:41:14,291 WARN L233 SmtUtils]: Spent 16.14s on a formula simplification. DAG size of input: 92 DAG size of output: 89 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:41:31,693 WARN L233 SmtUtils]: Spent 16.14s on a formula simplification. DAG size of input: 94 DAG size of output: 91 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:41:49,504 WARN L233 SmtUtils]: Spent 16.15s on a formula simplification. DAG size of input: 96 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-06 18:42:02,693 INFO L130 PetriNetUnfolder]: 5407/34525 cut-off events. [2022-12-06 18:42:02,693 INFO L131 PetriNetUnfolder]: For 681192/695568 co-relation queries the response was YES. [2022-12-06 18:42:02,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251430 conditions, 34525 events. 5407/34525 cut-off events. For 681192/695568 co-relation queries the response was YES. Maximal size of possible extension queue 1276. Compared 523310 event pairs, 0 based on Foata normal form. 2070/33787 useless extension candidates. Maximal degree in co-relation 75154. Up to 13501 conditions per place. [2022-12-06 18:42:02,878 INFO L137 encePairwiseOnDemand]: 75/106 looper letters, 2036 selfloop transitions, 541 changer transitions 8867/11478 dead transitions. [2022-12-06 18:42:02,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1348 places, 11478 transitions, 323824 flow [2022-12-06 18:42:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 248 states. [2022-12-06 18:42:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2022-12-06 18:42:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 10496 transitions. [2022-12-06 18:42:02,886 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.3992696287279367 [2022-12-06 18:42:02,886 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 1254 predicate places. [2022-12-06 18:42:02,887 INFO L495 AbstractCegarLoop]: Abstraction has has 1348 places, 11478 transitions, 323824 flow [2022-12-06 18:42:02,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 41.666666666666664) internal successors, (3125), 75 states have internal predecessors, (3125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:02,888 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:42:02,888 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:42:02,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-06 18:42:03,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-06 18:42:03,094 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:42:03,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:42:03,094 INFO L85 PathProgramCache]: Analyzing trace with hash 881944713, now seen corresponding path program 13 times [2022-12-06 18:42:03,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:42:03,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212449742] [2022-12-06 18:42:03,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:42:03,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:42:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 18:42:03,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:42:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212449742] [2022-12-06 18:42:03,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212449742] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:42:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586079519] [2022-12-06 18:42:03,879 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-06 18:42:03,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:42:03,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:42:03,881 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:42:03,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-06 18:42:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:42:03,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-06 18:42:03,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:42:04,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-06 18:42:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-06 18:42:04,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:42:04,534 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-12-06 18:42:04,534 INFO L350 Elim1Store]: Elim1 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 13 [2022-12-06 18:42:04,666 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-12-06 18:42:04,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586079519] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:42:04,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:42:04,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 13] total 47 [2022-12-06 18:42:04,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556156240] [2022-12-06 18:42:04,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:42:04,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-12-06 18:42:04,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:42:04,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-12-06 18:42:04,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1976, Unknown=0, NotChecked=0, Total=2162 [2022-12-06 18:42:04,669 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 106 [2022-12-06 18:42:04,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1348 places, 11478 transitions, 323824 flow. Second operand has 47 states, 47 states have (on average 53.319148936170215) internal successors, (2506), 47 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:42:04,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:42:04,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 106 [2022-12-06 18:42:04,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:43:25,278 INFO L130 PetriNetUnfolder]: 5554/35608 cut-off events. [2022-12-06 18:43:25,279 INFO L131 PetriNetUnfolder]: For 790894/806688 co-relation queries the response was YES. [2022-12-06 18:43:25,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274279 conditions, 35608 events. 5554/35608 cut-off events. For 790894/806688 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 543691 event pairs, 0 based on Foata normal form. 3012/35706 useless extension candidates. Maximal degree in co-relation 81460. Up to 13860 conditions per place. [2022-12-06 18:43:25,446 INFO L137 encePairwiseOnDemand]: 83/106 looper letters, 1485 selfloop transitions, 1160 changer transitions 9084/11770 dead transitions. [2022-12-06 18:43:25,446 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1554 places, 11770 transitions, 355534 flow [2022-12-06 18:43:25,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-12-06 18:43:25,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2022-12-06 18:43:25,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 11135 transitions. [2022-12-06 18:43:25,452 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.5074742502962355 [2022-12-06 18:43:25,453 INFO L294 CegarLoopForPetriNet]: 94 programPoint places, 1460 predicate places. [2022-12-06 18:43:25,453 INFO L495 AbstractCegarLoop]: Abstraction has has 1554 places, 11770 transitions, 355534 flow [2022-12-06 18:43:25,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 53.319148936170215) internal successors, (2506), 47 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:43:25,454 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:43:25,454 INFO L213 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:43:25,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-06 18:43:25,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-06 18:43:25,667 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-06 18:43:25,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:43:25,668 INFO L85 PathProgramCache]: Analyzing trace with hash -371114797, now seen corresponding path program 14 times [2022-12-06 18:43:25,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:43:25,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516289350] [2022-12-06 18:43:25,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:43:25,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:43:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:43:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-06 18:43:26,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:43:26,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516289350] [2022-12-06 18:43:26,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516289350] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:43:26,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860067167] [2022-12-06 18:43:26,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 18:43:26,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:43:26,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:43:26,595 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:43:26,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-06 18:43:26,713 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:43:26,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:43:26,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 55 conjunts are in the unsatisfiable core [2022-12-06 18:43:26,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:43:27,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-06 18:43:27,545 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-12-06 18:43:27,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-12-06 18:43:27,687 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-06 18:43:27,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:43:27,809 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_495 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_495) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)) 5)) is different from false [2022-12-06 18:43:27,828 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-06 18:43:27,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 37 [2022-12-06 18:43:27,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2022-12-06 18:43:28,326 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 75 trivial. 4 not checked. [2022-12-06 18:43:28,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860067167] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:43:28,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:43:28,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27, 20] total 63 [2022-12-06 18:43:28,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938306784] [2022-12-06 18:43:28,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:43:28,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-12-06 18:43:28,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:43:28,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-12-06 18:43:28,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=3523, Unknown=1, NotChecked=120, Total=3906 [2022-12-06 18:43:28,330 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 106 [2022-12-06 18:43:28,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1554 places, 11770 transitions, 355534 flow. Second operand has 63 states, 63 states have (on average 43.79365079365079) internal successors, (2759), 63 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:43:28,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:43:28,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 106 [2022-12-06 18:43:28,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-06 18:44:31,246 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 18:44:31,246 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 [2022-12-06 18:44:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-12-06 18:44:31,332 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-06 18:44:31,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-06 18:44:31,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:44:31,537 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (63states, 41/106 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 245325 conditions, 31520 events (5502/31519 cut-off events. For 874767/901457 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 491014 event pairs, 0 based on Foata normal form. 4540/34058 useless extension candidates. Maximal degree in co-relation 67457. Up to 11559 conditions per place.). [2022-12-06 18:44:31,539 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-06 18:44:31,539 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-06 18:44:31,539 INFO L458 BasicCegarLoop]: Path program histogram: [14, 1, 1, 1, 1] [2022-12-06 18:44:31,541 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 18:44:31,541 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 18:44:31,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:44:31 BasicIcfg [2022-12-06 18:44:31,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 18:44:31,544 INFO L158 Benchmark]: Toolchain (without parser) took 857965.75ms. Allocated memory was 187.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 163.9MB in the beginning and 338.5MB in the end (delta: -174.6MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2022-12-06 18:44:31,544 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory was 164.2MB in the beginning and 164.0MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 18:44:31,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.62ms. Allocated memory is still 187.7MB. Free memory was 163.8MB in the beginning and 151.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-06 18:44:31,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.26ms. Allocated memory is still 187.7MB. Free memory was 151.7MB in the beginning and 150.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 18:44:31,544 INFO L158 Benchmark]: Boogie Preprocessor took 30.36ms. Allocated memory is still 187.7MB. Free memory was 150.1MB in the beginning and 148.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 18:44:31,545 INFO L158 Benchmark]: RCFGBuilder took 418.12ms. Allocated memory is still 187.7MB. Free memory was 148.6MB in the beginning and 126.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-12-06 18:44:31,545 INFO L158 Benchmark]: TraceAbstraction took 857244.76ms. Allocated memory was 187.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 126.0MB in the beginning and 338.5MB in the end (delta: -212.5MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. [2022-12-06 18:44:31,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory was 164.2MB in the beginning and 164.0MB in the end (delta: 152.1kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.62ms. Allocated memory is still 187.7MB. Free memory was 163.8MB in the beginning and 151.7MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.26ms. Allocated memory is still 187.7MB. Free memory was 151.7MB in the beginning and 150.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.36ms. Allocated memory is still 187.7MB. Free memory was 150.1MB in the beginning and 148.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 418.12ms. Allocated memory is still 187.7MB. Free memory was 148.6MB in the beginning and 126.5MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 857244.76ms. Allocated memory was 187.7MB in the beginning and 1.6GB in the end (delta: 1.4GB). Free memory was 126.0MB in the beginning and 338.5MB in the end (delta: -212.5MB). Peak memory consumption was 1.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (63states, 41/106 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 245325 conditions, 31520 events (5502/31519 cut-off events. For 874767/901457 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 491014 event pairs, 0 based on Foata normal form. 4540/34058 useless extension candidates. Maximal degree in co-relation 67457. Up to 11559 conditions per place.). - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (63states, 41/106 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 245325 conditions, 31520 events (5502/31519 cut-off events. For 874767/901457 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 491014 event pairs, 0 based on Foata normal form. 4540/34058 useless extension candidates. Maximal degree in co-relation 67457. Up to 11559 conditions per place.). - TimeoutResultAtElement [Line: 79]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (63states, 41/106 universal loopers) in iteration 18,while PetriNetUnfolder was constructing finite prefix that currently has 245325 conditions, 31520 events (5502/31519 cut-off events. For 874767/901457 co-relation queries the response was YES. Maximal size of possible extension queue 1473. Compared 491014 event pairs, 0 based on Foata normal form. 4540/34058 useless extension candidates. Maximal degree in co-relation 67457. Up to 11559 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 3 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: 857.2s, OverallIterations: 18, TraceHistogramMax: 5, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 816.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 25 mSolverCounterUnknown, 21576 SdHoareTripleChecker+Valid, 17.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21576 mSDsluCounter, 10903 SdHoareTripleChecker+Invalid, 16.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1187 IncrementalHoareTripleChecker+Unchecked, 10272 mSDsCounter, 1183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31136 IncrementalHoareTripleChecker+Invalid, 33531 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1183 mSolverCounterUnsat, 631 mSDtfsCounter, 31136 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4848 GetRequests, 2767 SyntacticMatches, 16 SemanticMatches, 2065 ConstructedPredicates, 8 IntricatePredicates, 1 DeprecatedPredicates, 155284 ImplicationChecksByTransitivity, 640.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=355534occurred in iteration=17, InterpolantAutomatonStates: 1487, 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, 1.3s SatisfiabilityAnalysisTime, 35.2s InterpolantComputationTime, 3401 NumberOfCodeBlocks, 3360 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 4904 ConstructedInterpolants, 209 QuantifiedInterpolants, 48064 SizeOfPredicates, 283 NumberOfNonLiveVariables, 3981 ConjunctsInSsa, 580 ConjunctsInUnsatCore, 46 InterpolantComputations, 4 PerfectInterpolantSequences, 617/2175 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