/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 13:43:05,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 13:43:05,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 13:43:05,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 13:43:05,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 13:43:05,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 13:43:05,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 13:43:05,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 13:43:05,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 13:43:05,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 13:43:05,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 13:43:05,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 13:43:05,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 13:43:05,729 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 13:43:05,730 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 13:43:05,731 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 13:43:05,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 13:43:05,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 13:43:05,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 13:43:05,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 13:43:05,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 13:43:05,740 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 13:43:05,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 13:43:05,741 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 13:43:05,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 13:43:05,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 13:43:05,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 13:43:05,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 13:43:05,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 13:43:05,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 13:43:05,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 13:43:05,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 13:43:05,745 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 13:43:05,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 13:43:05,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 13:43:05,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 13:43:05,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 13:43:05,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 13:43:05,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 13:43:05,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 13:43:05,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 13:43:05,748 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf [2022-01-19 13:43:05,760 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 13:43:05,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 13:43:05,761 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 13:43:05,761 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 13:43:05,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 13:43:05,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 13:43:05,762 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 13:43:05,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 13:43:05,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 13:43:05,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 13:43:05,763 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 13:43:05,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 13:43:05,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:43:05,763 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 13:43:05,763 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 13:43:05,763 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 13:43:05,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 13:43:05,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 13:43:05,763 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 13:43:05,764 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 13:43:05,764 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 13:43:05,764 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 13:43:05,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 13:43:05,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 13:43:05,962 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 13:43:05,964 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 13:43:05,964 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 13:43:05,965 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2022-01-19 13:43:06,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c6438de/97e6cb5d953f464b8435620748777ece/FLAGbdaa619e8 [2022-01-19 13:43:06,367 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 13:43:06,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c [2022-01-19 13:43:06,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c6438de/97e6cb5d953f464b8435620748777ece/FLAGbdaa619e8 [2022-01-19 13:43:06,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c6438de/97e6cb5d953f464b8435620748777ece [2022-01-19 13:43:06,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 13:43:06,798 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 13:43:06,803 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 13:43:06,803 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 13:43:06,805 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 13:43:06,806 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:06,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46ca5162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06, skipping insertion in model container [2022-01-19 13:43:06,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:06,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 13:43:06,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 13:43:06,944 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2022-01-19 13:43:06,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:43:06,951 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 13:43:06,962 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-simple-equiv.wvr.c[2212,2225] [2022-01-19 13:43:06,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:43:06,971 INFO L208 MainTranslator]: Completed translation [2022-01-19 13:43:06,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06 WrapperNode [2022-01-19 13:43:06,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 13:43:06,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 13:43:06,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 13:43:06,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 13:43:06,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:06,981 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:06,993 INFO L137 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-01-19 13:43:06,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 13:43:06,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 13:43:06,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 13:43:06,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 13:43:06,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:06,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:07,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:07,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:07,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:07,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:07,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:07,017 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 13:43:07,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 13:43:07,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 13:43:07,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 13:43:07,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06" (1/1) ... [2022-01-19 13:43:07,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:43:07,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:43:07,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 13:43:07,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 13:43:07,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 13:43:07,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 13:43:07,091 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 13:43:07,091 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 13:43:07,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 13:43:07,092 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 13:43:07,092 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 13:43:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 13:43:07,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 13:43:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 13:43:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 13:43:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 13:43:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 13:43:07,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 13:43:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 13:43:07,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 13:43:07,095 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 13:43:07,190 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 13:43:07,191 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 13:43:07,331 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 13:43:07,367 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 13:43:07,367 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 13:43:07,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:43:07 BoogieIcfgContainer [2022-01-19 13:43:07,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 13:43:07,370 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 13:43:07,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 13:43:07,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 13:43:07,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:43:06" (1/3) ... [2022-01-19 13:43:07,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ea0c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:43:07, skipping insertion in model container [2022-01-19 13:43:07,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:43:06" (2/3) ... [2022-01-19 13:43:07,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ea0c31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:43:07, skipping insertion in model container [2022-01-19 13:43:07,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:43:07" (3/3) ... [2022-01-19 13:43:07,381 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-simple-equiv.wvr.c [2022-01-19 13:43:07,385 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 13:43:07,385 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 13:43:07,385 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 13:43:07,425 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,425 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,426 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,426 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,427 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,428 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,429 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,430 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,433 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,434 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,434 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,434 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,439 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,440 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,442 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,442 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,442 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,446 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,447 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:43:07,458 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 13:43:07,496 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 13:43:07,501 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 13:43:07,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 13:43:07,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 212 flow [2022-01-19 13:43:07,545 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2022-01-19 13:43:07,545 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 13:43:07,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 91 events. 2/91 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 25 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-01-19 13:43:07,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 212 flow [2022-01-19 13:43:07,550 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 80 transitions, 178 flow [2022-01-19 13:43:07,564 INFO L129 PetriNetUnfolder]: 2/79 cut-off events. [2022-01-19 13:43:07,564 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 13:43:07,565 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:43:07,565 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:43:07,565 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:43:07,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:43:07,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1985561410, now seen corresponding path program 1 times [2022-01-19 13:43:07,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:43:07,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197200815] [2022-01-19 13:43:07,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:43:07,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:43:07,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:43:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:43:08,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:43:08,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197200815] [2022-01-19 13:43:08,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197200815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:43:08,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:43:08,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:43:08,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578593000] [2022-01-19 13:43:08,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:43:08,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:43:08,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:43:08,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:43:08,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:43:08,164 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-01-19 13:43:08,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 178 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:08,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:43:08,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-01-19 13:43:08,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:43:08,866 INFO L129 PetriNetUnfolder]: 47/216 cut-off events. [2022-01-19 13:43:08,866 INFO L130 PetriNetUnfolder]: For 79/85 co-relation queries the response was YES. [2022-01-19 13:43:08,868 INFO L84 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 216 events. 47/216 cut-off events. For 79/85 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 693 event pairs, 23 based on Foata normal form. 6/213 useless extension candidates. Maximal degree in co-relation 246. Up to 85 conditions per place. [2022-01-19 13:43:08,869 INFO L132 encePairwiseOnDemand]: 78/94 looper letters, 27 selfloop transitions, 15 changer transitions 13/105 dead transitions. [2022-01-19 13:43:08,870 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 105 transitions, 359 flow [2022-01-19 13:43:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 13:43:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 13:43:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 878 transitions. [2022-01-19 13:43:08,888 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7184942716857611 [2022-01-19 13:43:08,889 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 878 transitions. [2022-01-19 13:43:08,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 878 transitions. [2022-01-19 13:43:08,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:43:08,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 878 transitions. [2022-01-19 13:43:08,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.53846153846153) internal successors, (878), 13 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:08,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:08,903 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:08,904 INFO L186 Difference]: Start difference. First operand has 88 places, 80 transitions, 178 flow. Second operand 13 states and 878 transitions. [2022-01-19 13:43:08,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 105 transitions, 359 flow [2022-01-19 13:43:08,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 105 transitions, 333 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 13:43:08,910 INFO L242 Difference]: Finished difference. Result has 99 places, 88 transitions, 249 flow [2022-01-19 13:43:08,911 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=249, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2022-01-19 13:43:08,914 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2022-01-19 13:43:08,914 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 249 flow [2022-01-19 13:43:08,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:08,914 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:43:08,915 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:43:08,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 13:43:08,915 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:43:08,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:43:08,915 INFO L85 PathProgramCache]: Analyzing trace with hash 653009678, now seen corresponding path program 2 times [2022-01-19 13:43:08,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:43:08,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727969250] [2022-01-19 13:43:08,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:43:08,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:43:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:43:09,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:43:09,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:43:09,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727969250] [2022-01-19 13:43:09,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727969250] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:43:09,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:43:09,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:43:09,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171318348] [2022-01-19 13:43:09,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:43:09,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:43:09,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:43:09,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:43:09,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:43:09,155 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-01-19 13:43:09,156 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 249 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:09,156 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:43:09,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-01-19 13:43:09,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:43:09,494 INFO L129 PetriNetUnfolder]: 61/265 cut-off events. [2022-01-19 13:43:09,494 INFO L130 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-01-19 13:43:09,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 567 conditions, 265 events. 61/265 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1017 event pairs, 1 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 554. Up to 71 conditions per place. [2022-01-19 13:43:09,496 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 41 selfloop transitions, 19 changer transitions 19/129 dead transitions. [2022-01-19 13:43:09,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 562 flow [2022-01-19 13:43:09,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 13:43:09,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 13:43:09,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 885 transitions. [2022-01-19 13:43:09,503 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7242225859247136 [2022-01-19 13:43:09,503 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 885 transitions. [2022-01-19 13:43:09,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 885 transitions. [2022-01-19 13:43:09,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:43:09,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 885 transitions. [2022-01-19 13:43:09,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 68.07692307692308) internal successors, (885), 13 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:09,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:09,508 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:09,508 INFO L186 Difference]: Start difference. First operand has 99 places, 88 transitions, 249 flow. Second operand 13 states and 885 transitions. [2022-01-19 13:43:09,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 562 flow [2022-01-19 13:43:09,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 129 transitions, 548 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-01-19 13:43:09,514 INFO L242 Difference]: Finished difference. Result has 105 places, 101 transitions, 373 flow [2022-01-19 13:43:09,514 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=373, PETRI_PLACES=105, PETRI_TRANSITIONS=101} [2022-01-19 13:43:09,515 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 17 predicate places. [2022-01-19 13:43:09,515 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 101 transitions, 373 flow [2022-01-19 13:43:09,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:09,516 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:43:09,517 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:43:09,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 13:43:09,517 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:43:09,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:43:09,518 INFO L85 PathProgramCache]: Analyzing trace with hash -2028188250, now seen corresponding path program 3 times [2022-01-19 13:43:09,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:43:09,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904368979] [2022-01-19 13:43:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:43:09,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:43:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:43:09,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:43:09,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:43:09,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904368979] [2022-01-19 13:43:09,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904368979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:43:09,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:43:09,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:43:09,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047409465] [2022-01-19 13:43:09,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:43:09,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:43:09,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:43:09,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:43:09,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:43:09,779 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-01-19 13:43:09,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 101 transitions, 373 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:09,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:43:09,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-01-19 13:43:09,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:43:10,111 INFO L129 PetriNetUnfolder]: 53/276 cut-off events. [2022-01-19 13:43:10,111 INFO L130 PetriNetUnfolder]: For 212/220 co-relation queries the response was YES. [2022-01-19 13:43:10,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 276 events. 53/276 cut-off events. For 212/220 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1173 event pairs, 4 based on Foata normal form. 4/278 useless extension candidates. Maximal degree in co-relation 666. Up to 49 conditions per place. [2022-01-19 13:43:10,113 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 24 selfloop transitions, 15 changer transitions 41/130 dead transitions. [2022-01-19 13:43:10,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 672 flow [2022-01-19 13:43:10,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 13:43:10,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 13:43:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 883 transitions. [2022-01-19 13:43:10,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7225859247135843 [2022-01-19 13:43:10,115 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 883 transitions. [2022-01-19 13:43:10,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 883 transitions. [2022-01-19 13:43:10,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:43:10,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 883 transitions. [2022-01-19 13:43:10,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 67.92307692307692) internal successors, (883), 13 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:10,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:10,119 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:10,119 INFO L186 Difference]: Start difference. First operand has 105 places, 101 transitions, 373 flow. Second operand 13 states and 883 transitions. [2022-01-19 13:43:10,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 672 flow [2022-01-19 13:43:10,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 130 transitions, 619 flow, removed 20 selfloop flow, removed 6 redundant places. [2022-01-19 13:43:10,124 INFO L242 Difference]: Finished difference. Result has 113 places, 85 transitions, 302 flow [2022-01-19 13:43:10,124 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=302, PETRI_PLACES=113, PETRI_TRANSITIONS=85} [2022-01-19 13:43:10,125 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 25 predicate places. [2022-01-19 13:43:10,125 INFO L470 AbstractCegarLoop]: Abstraction has has 113 places, 85 transitions, 302 flow [2022-01-19 13:43:10,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:10,125 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:43:10,125 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:43:10,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 13:43:10,125 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:43:10,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:43:10,126 INFO L85 PathProgramCache]: Analyzing trace with hash -203117776, now seen corresponding path program 4 times [2022-01-19 13:43:10,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:43:10,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149061801] [2022-01-19 13:43:10,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:43:10,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:43:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:43:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:43:10,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:43:10,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149061801] [2022-01-19 13:43:10,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149061801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:43:10,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:43:10,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:43:10,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984637100] [2022-01-19 13:43:10,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:43:10,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:43:10,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:43:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:43:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:43:10,312 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-01-19 13:43:10,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 85 transitions, 302 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:10,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:43:10,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-01-19 13:43:10,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:43:10,544 INFO L129 PetriNetUnfolder]: 12/139 cut-off events. [2022-01-19 13:43:10,545 INFO L130 PetriNetUnfolder]: For 130/130 co-relation queries the response was YES. [2022-01-19 13:43:10,545 INFO L84 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 139 events. 12/139 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 343 event pairs, 2 based on Foata normal form. 1/138 useless extension candidates. Maximal degree in co-relation 305. Up to 26 conditions per place. [2022-01-19 13:43:10,545 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 22 selfloop transitions, 6 changer transitions 19/97 dead transitions. [2022-01-19 13:43:10,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 97 transitions, 433 flow [2022-01-19 13:43:10,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 13:43:10,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 13:43:10,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 865 transitions. [2022-01-19 13:43:10,548 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7078559738134206 [2022-01-19 13:43:10,548 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 865 transitions. [2022-01-19 13:43:10,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 865 transitions. [2022-01-19 13:43:10,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:43:10,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 865 transitions. [2022-01-19 13:43:10,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.53846153846153) internal successors, (865), 13 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:10,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:10,551 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 94.0) internal successors, (1316), 14 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:10,551 INFO L186 Difference]: Start difference. First operand has 113 places, 85 transitions, 302 flow. Second operand 13 states and 865 transitions. [2022-01-19 13:43:10,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 97 transitions, 433 flow [2022-01-19 13:43:10,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 97 transitions, 368 flow, removed 14 selfloop flow, removed 16 redundant places. [2022-01-19 13:43:10,554 INFO L242 Difference]: Finished difference. Result has 107 places, 78 transitions, 221 flow [2022-01-19 13:43:10,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=241, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=221, PETRI_PLACES=107, PETRI_TRANSITIONS=78} [2022-01-19 13:43:10,555 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 19 predicate places. [2022-01-19 13:43:10,555 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 78 transitions, 221 flow [2022-01-19 13:43:10,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:10,556 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:43:10,556 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:43:10,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 13:43:10,556 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 13:43:10,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:43:10,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1982401284, now seen corresponding path program 5 times [2022-01-19 13:43:10,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:43:10,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310029905] [2022-01-19 13:43:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:43:10,557 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:43:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:43:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:43:10,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:43:10,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310029905] [2022-01-19 13:43:10,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310029905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:43:10,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:43:10,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 13:43:10,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317319953] [2022-01-19 13:43:10,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:43:10,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:43:10,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:43:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:43:10,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 13:43:10,782 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 94 [2022-01-19 13:43:10,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 78 transitions, 221 flow. Second operand has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:10,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:43:10,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 94 [2022-01-19 13:43:10,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:43:11,018 INFO L129 PetriNetUnfolder]: 4/89 cut-off events. [2022-01-19 13:43:11,018 INFO L130 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-01-19 13:43:11,018 INFO L84 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 89 events. 4/89 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 69 event pairs, 0 based on Foata normal form. 1/90 useless extension candidates. Maximal degree in co-relation 160. Up to 7 conditions per place. [2022-01-19 13:43:11,018 INFO L132 encePairwiseOnDemand]: 82/94 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2022-01-19 13:43:11,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 78 transitions, 282 flow [2022-01-19 13:43:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 13:43:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 13:43:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 787 transitions. [2022-01-19 13:43:11,020 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6976950354609929 [2022-01-19 13:43:11,020 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 787 transitions. [2022-01-19 13:43:11,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 787 transitions. [2022-01-19 13:43:11,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:43:11,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 787 transitions. [2022-01-19 13:43:11,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.58333333333333) internal successors, (787), 12 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:11,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:11,023 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 94.0) internal successors, (1222), 13 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:11,023 INFO L186 Difference]: Start difference. First operand has 107 places, 78 transitions, 221 flow. Second operand 12 states and 787 transitions. [2022-01-19 13:43:11,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 78 transitions, 282 flow [2022-01-19 13:43:11,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 78 transitions, 247 flow, removed 2 selfloop flow, removed 14 redundant places. [2022-01-19 13:43:11,025 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2022-01-19 13:43:11,025 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=94, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2022-01-19 13:43:11,025 INFO L334 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2022-01-19 13:43:11,026 INFO L470 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2022-01-19 13:43:11,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 65.36363636363636) internal successors, (719), 11 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:43:11,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 13:43:11,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 13:43:11,029 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 13:43:11,030 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 13:43:11,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 13:43:11,032 INFO L732 BasicCegarLoop]: Path program histogram: [5] [2022-01-19 13:43:11,033 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 13:43:11,033 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 13:43:11,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:43:11 BasicIcfg [2022-01-19 13:43:11,038 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 13:43:11,039 INFO L158 Benchmark]: Toolchain (without parser) took 4240.39ms. Allocated memory was 364.9MB in the beginning and 448.8MB in the end (delta: 83.9MB). Free memory was 311.0MB in the beginning and 272.9MB in the end (delta: 38.0MB). Peak memory consumption was 122.9MB. Max. memory is 16.0GB. [2022-01-19 13:43:11,039 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 364.9MB. Free memory is still 327.3MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:43:11,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.82ms. Allocated memory is still 364.9MB. Free memory was 310.9MB in the beginning and 337.1MB in the end (delta: -26.2MB). Peak memory consumption was 12.7MB. Max. memory is 16.0GB. [2022-01-19 13:43:11,040 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.45ms. Allocated memory is still 364.9MB. Free memory was 337.1MB in the beginning and 335.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:43:11,042 INFO L158 Benchmark]: Boogie Preprocessor took 23.54ms. Allocated memory is still 364.9MB. Free memory was 335.6MB in the beginning and 334.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:43:11,045 INFO L158 Benchmark]: RCFGBuilder took 351.35ms. Allocated memory is still 364.9MB. Free memory was 334.3MB in the beginning and 321.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-19 13:43:11,046 INFO L158 Benchmark]: TraceAbstraction took 3668.59ms. Allocated memory was 364.9MB in the beginning and 448.8MB in the end (delta: 83.9MB). Free memory was 320.3MB in the beginning and 272.9MB in the end (delta: 47.4MB). Peak memory consumption was 133.4MB. Max. memory is 16.0GB. [2022-01-19 13:43:11,047 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 364.9MB. Free memory is still 327.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 168.82ms. Allocated memory is still 364.9MB. Free memory was 310.9MB in the beginning and 337.1MB in the end (delta: -26.2MB). Peak memory consumption was 12.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.45ms. Allocated memory is still 364.9MB. Free memory was 337.1MB in the beginning and 335.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.54ms. Allocated memory is still 364.9MB. Free memory was 335.6MB in the beginning and 334.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 351.35ms. Allocated memory is still 364.9MB. Free memory was 334.3MB in the beginning and 321.0MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3668.59ms. Allocated memory was 364.9MB in the beginning and 448.8MB in the end (delta: 83.9MB). Free memory was 320.3MB in the beginning and 272.9MB in the end (delta: 47.4MB). Peak memory consumption was 133.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 82]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 111 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 254 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 564 mSDsCounter, 92 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1278 IncrementalHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 92 mSolverCounterUnsat, 57 mSDtfsCounter, 1278 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 11 SyntacticMatches, 9 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=373occurred in iteration=2, InterpolantAutomatonStates: 64, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 6464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 13:43:11,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...